Changeset 240 for palm/trunk/DOC/app


Ignore:
Timestamp:
Feb 18, 2009 5:50:38 PM (14 years ago)
Author:
letzel
Message:
  • External pressure gradient (check_parameters, init_3d_model, header, modules, parin, prognostic_equations)
  • New topography case 'single_street_canyon'
Location:
palm/trunk/DOC/app
Files:
3 edited

Legend:

Unmodified
Added
Removed
  • palm/trunk/DOC/app/chapter_4.1.html

    r217 r240  
    28112811    </tr>
    28122812
    2813     <tr>
     2813    <tr><td style="font-weight: bold; vertical-align: top;"><a name="canyon_height"></a>canyon_height</td><td style="vertical-align: top;">R</td><td style="font-style: italic; vertical-align: top;">50.0</td><td>Street canyon height
     2814in m.<br>
     2815
     2816
     2817
     2818
     2819
     2820
     2821 <br>
     2822
     2823
     2824
     2825
     2826
     2827
     2828 <span style="font-weight: bold;">canyon_height</span> must
     2829be less than the height of the model domain. This parameter requires&nbsp;<a href="chapter_4.1.html#topography">topography</a>
     2830= <span style="font-style: italic;">'single_street_canyon'</span>.</td></tr><tr><td style="font-weight: bold; vertical-align: top;"><a name="canyon_width_x"></a>canyon_width_x</td><td style="vertical-align: top;">R</td><td style="font-style: italic; vertical-align: top;">9999999.9</td><td>Street canyon width in x-direction in m.<br>
     2831
     2832
     2833
     2834
     2835
     2836
     2837 <br>
     2838
     2839
     2840
     2841
     2842
     2843
     2844
     2845Currently, <span style="font-weight: bold;">canyon_width_x</span>
     2846must be at least <span style="font-style: italic;">3
     2847*&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#dx">dx</a> and no more than <span style="font-style: italic;">(&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#nx">nx</a><span style="font-style: italic;"> - 1 ) </span><span style="font-style: italic;"> * <a href="chapter_4.1.html#dx">dx</a>
     2848      </span><span style="font-style: italic;">- <a href="chapter_4.1.html#canyon_wall_left">canyon_wall_left</a></span>.
     2849This parameter requires&nbsp;<a href="chapter_4.1.html#topography">topography</a>
     2850= <span style="font-style: italic;">'</span><span style="font-style: italic;">single_street_canyon</span><span style="font-style: italic;">'</span>. A non-default value implies a canyon orientation in y-direction.</td></tr><tr><td style="font-weight: bold; vertical-align: top;"><a name="canyon_width_y"></a>canyon_width_y</td><td style="vertical-align: top;">R</td><td style="font-style: italic; vertical-align: top;">9999999.9</td><td>Street canyon width in y-direction in m.<br>
     2851
     2852
     2853
     2854
     2855
     2856
     2857 <br>
     2858
     2859
     2860
     2861
     2862
     2863
     2864
     2865Currently, <span style="font-weight: bold;">canyon_width_y</span>
     2866must be at least <span style="font-style: italic;">3
     2867*&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#dy">dy</a> and no more than <span style="font-style: italic;">(&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#ny">ny</a><span style="font-style: italic;"> - 1 )&nbsp;</span><span style="font-style: italic;"> * <a href="chapter_4.1.html#dy">dy</a></span><span style="font-style: italic;"> - <a href="chapter_4.1.html#canyon_wall_south">canyon_wall_south</a></span>. This parameter requires&nbsp;<a href="chapter_4.1.html#topography">topography</a>
     2868= <span style="font-style: italic;">'</span><span style="font-style: italic;">single_street_canyon</span>.&nbsp;A non-default value implies a canyon orientation in x-direction.</td></tr><tr><td style="font-weight: bold; vertical-align: top;"><a name="canyon_wall_left"></a>canyon_wall_left</td><td style="vertical-align: top;">R</td><td style="font-style: italic; vertical-align: top;"><span style="font-style: italic;">canyon centered in x-direction</span></td><td>x-coordinate of the left canyon wall (distance between the
     2869left canyon wall and the left border of the model domain) in m.<br>
     2870
     2871
     2872
     2873
     2874
     2875
     2876
     2877      <br>
     2878
     2879
     2880
     2881
     2882
     2883
     2884
     2885Currently, <span style="font-weight: bold;">canyon_wall_left</span>
     2886must be at least <span style="font-style: italic;">1
     2887*&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#dx">dx</a> and less than <span style="font-style: italic;">( <a href="chapter_4.1.html#nx">nx</a>&nbsp;
     2888- 1 ) * <a href="chapter_4.1.html#dx">dx</a> -&nbsp; <a href="chapter_4.1.html#canyon_width_x">canyon_width_x</a></span>.
     2889This parameter requires&nbsp;<a href="chapter_4.1.html#topography">topography</a>
     2890= <span style="font-style: italic;">'</span><span style="font-style: italic;">single_street_canyon</span><span style="font-style: italic;">'</span>.<br>
     2891
     2892
     2893
     2894
     2895
     2896
     2897
     2898      <br>
     2899
     2900
     2901
     2902
     2903
     2904
     2905
     2906The default value <span style="font-weight: bold;">canyon_wall_left</span>
     2907= <span style="font-style: italic;">( ( <a href="chapter_4.1.html#nx">nx</a>&nbsp;+
     29081 ) * <a href="chapter_4.1.html#dx">dx</a> -&nbsp; <a href="chapter_4.1.html#canyon_width_x">canyon_width_x</a> ) / 2</span>
     2909centers the canyon in x-direction.</td></tr><tr><td style="font-weight: bold; vertical-align: top;"><a name="canyon_wall_south"></a>canyon_wall_south</td><td style="vertical-align: top;">R</td><td style="font-style: italic; vertical-align: top;"><span style="font-style: italic;">canyon centered in y-direction</span></td><td>y-coordinate of the South canyon wall (distance between the
     2910South canyon wall and the South border of the model domain) in m.<br>
     2911
     2912
     2913
     2914
     2915
     2916
     2917
     2918      <br>
     2919
     2920
     2921
     2922
     2923
     2924
     2925
     2926Currently, <span style="font-weight: bold;">canyon_wall_south</span>
     2927must be at least <span style="font-style: italic;">1
     2928*&nbsp;</span><a style="font-style: italic;" href="chapter_4.1.html#dy">dy</a> and less than <span style="font-style: italic;">( <a href="chapter_4.1.html#ny">ny</a>&nbsp;
     2929- 1 ) * <a href="chapter_4.1.html#dy">dy</a> -&nbsp; <a href="chapter_4.1.html#canyon_width_y">canyon_width_y</a></span>.
     2930This parameter requires&nbsp;<a href="chapter_4.1.html#topography">topography</a>
     2931= <span style="font-style: italic;">'</span><span style="font-style: italic;">single_street_canyon</span><span style="font-style: italic;">'</span>.<br>
     2932
     2933
     2934
     2935
     2936
     2937
     2938
     2939      <br>
     2940
     2941
     2942
     2943
     2944
     2945
     2946
     2947The default value <span style="font-weight: bold;">canyon_wall_south</span>
     2948= <span style="font-style: italic;">( ( <a href="chapter_4.1.html#ny">ny</a>&nbsp;+
     29491 ) * <a href="chapter_4.1.html#dy">dy</a> -&nbsp;&nbsp;</span><a href="chapter_4.1.html#building_length_y"><span style="font-style: italic;"></span></a><a style="font-style: italic;" href="chapter_4.1.html#canyon_width_y">canyon_wid</a><span style="font-style: italic;"><a style="font-style: italic;" href="chapter_4.1.html#canyon_width_y">th_y</a> ) / 2</span>
     2950centers the canyon in y-direction.</td></tr><tr>
    28142951
    28152952
     
    31183255
    31193256 <span style="font-weight: bold;">conserve_volume_flow</span>
    3120 = <span style="font-style: italic;">.TRUE.</span>
     3257= <span style="font-style: italic;">.T.</span>
    31213258guarantees that the volume flow through the xz- or yz-cross-section of
    31223259the total model domain remains constant (equal to the initial value at
    3123 t=0) throughout the run.<br>
     3260t=0) throughout the run.<br><br>Note that&nbsp;<span style="font-weight: bold;">conserve_volume_flow</span>
     3261= <span style="font-style: italic;">.T.</span> requires <a href="#dp_external">dp_external</a> = <span style="font-style: italic;">.F.</span> .<br>
    31243262
    31253263
     
    35193657
    35203658 </tr>
    3521 
     3659    <tr><td style="vertical-align: top;"><p><a name="dp_external"></a><b>dp_external</b></p></td><td style="vertical-align: top;">L</td><td style="vertical-align: top; font-style: italic;">.F.</td><td>External pressure gradient switch.<br><br>This
     3660parameter is used to switch on/off an external pressure gradient as
     3661driving force. The external pressure gradient is controlled by the
     3662parameters <a href="#dp_smooth">dp_smooth</a>, <a href="#dp_level_b">dp_level_b</a> and <a href="#dpdxy">dpdxy</a>.<br><br>Note that&nbsp;<span style="font-weight: bold;">dp_external</span> = <span style="font-style: italic;">.T.</span> requires <a href="#conserve_volume_flow">conserve_volume_flow</a> =<span style="font-style: italic;"> .F. </span>It is normally recommended to disable the Coriolis force by setting <a href="l#omega">omega</a> = 0.0.</td></tr><tr><td style="vertical-align: top;"><p><a name="dp_smooth"></a><b>dp_smooth</b></p></td><td style="vertical-align: top;">L</td><td style="vertical-align: top; font-style: italic;">.F.</td><td>Vertically smooth the external pressure gradient using a sinusoidal smoothing function.<br><br>This parameter only applies if <a href="#dp_external">dp_external</a> = <span style="font-style: italic;">.T. </span>. It is useful in combination with&nbsp;<a href="#dp_level_b">dp_level_b</a> &gt;&gt; 0 to generate a non-accelerated boundary layer well below&nbsp;<a href="#dp_level_b">dp_level_b</a>.</td></tr><tr><td style="vertical-align: top;"><p><a name="dp_level_b"></a><b>dp_level_b</b></p></td><td style="vertical-align: top;">R</td><td style="vertical-align: top; font-style: italic;">0.0</td><td><font size="3">Lower
     3663limit of the vertical range for which the external pressure gradient is applied (</font>in <font size="3">m).</font><br><br>This parameter only applies if <a href="#dp_external">dp_external</a> = <span style="font-style: italic;">.T. </span><span lang="en-GB">It
     3664must hold the condition zu(0) &lt;= <b>dp_level_b</b>
     3665&lt;= zu(</span><a href="#nz"><span lang="en-GB">nz</span></a><span lang="en-GB">)</span><span lang="en-GB">.&nbsp;</span>It can be used in combination with&nbsp;<a href="#dp_smooth">dp_smooth</a> = <span style="font-style: italic;">.T.</span> to generate a non-accelerated boundary layer well below&nbsp;<span style="font-weight: bold;">dp_level_b</span> if&nbsp;<span style="font-weight: bold;">dp_level_b</span> &gt;&gt; 0.<br><br>Note
     3666that there is no upper limit of the vertical range because the external
     3667pressure gradient is always applied up to the top of the model domain.</td></tr><tr><td style="vertical-align: top;"><p><a name="dpdxy"></a><b>dpdxy</b></p></td><td style="vertical-align: top;">R(2)</td><td style="font-style: italic; vertical-align: top;">2 * 0.0</td><td>Values of the external pressure gradient applied in x- and y-direction, respectively (in Pa/m).<br><br>This parameter only applies if <a href="#dp_external">dp_external</a> = <span style="font-style: italic;">.T. </span>It sets the pressure gradient values. Negative values mean an acceleration, positive values mean deceleration. For example, <span style="font-weight: bold;">dpdxy</span> = -0.0002, 0.0, drives the flow in positive x-direction, <span lang="en-GB"></span></td></tr>
    35223668
    35233669
     
    1398514131
    1398614132
    13987 The building size and location can be specified with the parameters <a href="#building_height">building_height</a>, <a href="#building_length_x">building_length_x</a>, <a href="#building_length_y">building_length_y</a>, <a href="#building_wall_left">building_wall_left</a> and <a href="#building_wall_south">building_wall_south</a>.<font color="#000000"><br></font></div>
     14133The building size and location can be specified by the parameters <a href="#building_height">building_height</a>, <a href="#building_length_x">building_length_x</a>, <a href="#building_length_y">building_length_y</a>, <a href="#building_wall_left">building_wall_left</a> and <a href="#building_wall_south">building_wall_south</a>.<font color="#000000"><br></font></div>
    1398814134
    1398914135
     
    1400014146     
    1400114147     
    14002       <p><span style="font-style: italic;">'read_from_file'</span><br>
     14148      <p><span style="font-style: italic;">'single_street_canyon'</span><br>
     14149
     14150
     14151
     14152
     14153
     14154
     14155
     14156      </p>
     14157
     14158
     14159
     14160
     14161
     14162
     14163 
     14164     
     14165     
     14166     
     14167     
     14168     
     14169     
     14170      <div style="margin-left: 40px;">Flow
     14171over a single, quasi-2D street canyon of infinite length oriented either in x- or in y-direction.<br>
     14172
     14173
     14174
     14175
     14176
     14177
     14178
     14179The canyon size, orientation and location can be specified by the parameters <a href="chapter_4.1.html#canyon_height">canyon_height</a> plus <span style="font-weight: bold;">either</span>&nbsp;<a href="chapter_4.1.html#canyon_width_x">canyon_width_x</a> and <a href="chapter_4.1.html#canyon_wall_left">canyon_wall_left</a> <span style="font-weight: bold;">or</span>&nbsp; <a href="chapter_4.1.html#canyon_width_y">canyon_width_y</a> and <a href="chapter_4.1.html#canyon_wall_south">canyon_wall_south</a>.<font color="#000000"><br></font></div>
     14180
     14181
     14182
     14183
     14184
     14185
     14186
     14187      <span style="font-style: italic;"></span>&nbsp;<span style="font-style: italic;"></span><p><span style="font-style: italic;">'read_from_file'</span><br>
    1400314188
    1400414189
  • palm/trunk/DOC/app/chapter_4.2.html

    r237 r240  
    33983398
    33993399
    3400       <td style="vertical-align: top;">
     3400      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;">
    34013401     
    34023402     
     
    34113411     
    34123412     
    3413       <p><span lang="en-GB"><font face="Thorndale, serif">The parameter </font></span><a href="#create_disturbances"><span lang="en-GB"><font face="Thorndale, serif">create_disturbances</font></span></a><font face="Thorndale, serif"><span lang="en-GB">
     3413      <p><span lang="en-GB">The parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
    34143414describes how to impose
    34153415random perturbations to the horizontal velocity field. The perturbation
     
    34203420velocities are imposed no more. The value of this parameter usually
    34213421must be determined by trial and error (it depends e.g. on the total
    3422 number of grid points).</span> </font> </p>
     3422number of grid points).</span> </p>
    34233423
    34243424
     
    34573457
    34583458
    3459       <td style="vertical-align: top;">
    3460      
    3461      
    3462       <p lang="en-GB"><font face="Thorndale, serif"><font size="3">Lower
     3459      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;">
     3460     
     3461     
     3462      <p lang="en-GB"><font size="3">Lower
    34633463limit of the vertical range for which random perturbations are to be
    3464 imposed on the horizontal wind field (</font></font>in <font face="Thorndale, serif"><font size="3">m).&nbsp;
    3465       </font></font> </p>
    3466 
    3467 
    3468  
    3469      
    3470      
    3471       <p><span lang="en-GB"><font face="Thorndale, serif">This
     3464imposed on the horizontal wind field (</font>in <font size="3">m).&nbsp;
     3465      </font> </p>
     3466
     3467
     3468 
     3469     
     3470     
     3471      <p><span lang="en-GB">This
    34723472parameter must hold the condition zu(3) &lt;= <b>disturbance_level_b</b>
    3473 &lt;= zu(</font></span><a href="chapter_4.1.html#nz"><span lang="en-GB"><font face="Thorndale, serif">nz-2</font></span></a><span lang="en-GB"><font face="Thorndale, serif">)</font></span><span lang="en-GB"><font face="Thorndale, serif">. Additionally, <b>disturbance_level_b</b>
    3474 &lt;= </font></span><a href="#disturbance_level_t"><span lang="en-GB"><font face="Thorndale, serif">disturbance_level_t</font></span></a>
    3475       <span lang="en-GB"><font face="Thorndale, serif">must
    3476 also hold.</font></span></p>
    3477 
    3478 
    3479      
    3480      
    3481       <p><span lang="en-GB"><font face="Thorndale, serif">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </font></span><span lang="en-GB"><span style="font-family: Thorndale,serif;">the default value is <span style="font-weight: bold;">disturbance_level_b</span> = <span style="font-style: italic;">zu(nz * 2 / 3) </span>(negative).</span></span><a href="chapter_4.1.html#nz"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"></span></p>
    3482 
    3483 
    3484  
    3485      
    3486      
    3487       <p><span lang="en-GB"><font face="Thorndale, serif">The
    3488 parameter </font></span><a href="#create_disturbances"><span lang="en-GB"><font face="Thorndale, serif">create_disturbances</font></span></a><font face="Thorndale, serif"><span lang="en-GB">
     3473&lt;= zu(</span><a href="chapter_4.1.html#nz"><span lang="en-GB">nz-2</span></a><span lang="en-GB">)</span><span lang="en-GB">. Additionally, <b>disturbance_level_b</b>
     3474&lt;= </span><a href="#disturbance_level_t"><span lang="en-GB">disturbance_level_t</span></a>
     3475      <span lang="en-GB">must
     3476also hold.</span></p>
     3477
     3478
     3479     
     3480     
     3481      <p><span lang="en-GB">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </span><span lang="en-GB">the default value is <span style="font-weight: bold;">disturbance_level_b</span> = <span style="font-style: italic;">zu(nz * 2 / 3) </span>(negative).</span><a href="chapter_4.1.html#nz"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"></span></p>
     3482
     3483
     3484 
     3485     
     3486     
     3487      <p><span lang="en-GB">The
     3488parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
    34893489describes how to impose
    3490 random perturbations to the horizontal velocity field</span></font><font face="Thorndale, serif"><span lang="en-GB">.</span>
     3490random perturbations to the horizontal velocity field</span><span lang="en-GB">.</span>
     3491       </p>
     3492
     3493
     3494 </td>
     3495
     3496
     3497 </tr>
     3498
     3499
     3500 <tr>
     3501
     3502
     3503 <td style="vertical-align: top;">
     3504     
     3505     
     3506      <p><a name="disturbance_level_t"></a><b>disturbance_level_t</b></p>
     3507
     3508
     3509
     3510      </td>
     3511
     3512
     3513 <td style="vertical-align: top;">R</td>
     3514
     3515
     3516
     3517      <td style="vertical-align: top;"><i>zu(nz/3) or<br>
     3518
     3519
     3520zu(nzt-3)<br>
     3521
     3522
     3523see right</i></td>
     3524
     3525
     3526
     3527      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;">
     3528     
     3529     
     3530      <p lang="en-GB"><font size="3">Upper
     3531limit of the vertical range for which random perturbations are to be
     3532imposed on the horizontal wind field (</font>in <font size="3">m).&nbsp;
    34913533      </font> </p>
    34923534
    34933535
     3536 
     3537     
     3538     
     3539      <p><span lang="en-GB">This
     3540parameter must hold the condition <b>disturbance_level_t</b>
     3541&lt;= zu<i>(</i></span><i><a href="chapter_4.1.html#nz"><span lang="en-GB">nz-2</span></a><span lang="en-GB">)</span></i><span lang="en-GB">.
     3542Additionally, </span><a href="#disturbance_level_b"><span lang="en-GB">disturbance_level_b</span></a>
     3543      <span lang="en-GB">&lt;=
     3544      <b>disturbance_level_t</b>
     3545must also hold.</span></p>
     3546
     3547
     3548      <span lang="en-GB">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </span><span lang="en-GB">the default value is <span style="font-weight: bold;">disturbance_level_t</span> = <span style="font-style: italic;">zu(nzt - 3</span>)</span><span lang="en-GB"><span style="font-style: italic;"> </span>(negative)</span><span lang="en-GB">.</span>
     3549     
     3550     
     3551      <p><span lang="en-GB">The
     3552parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
     3553describes how to impose
     3554random perturbations to the horizontal velocity field</span><span lang="en-GB">.</span>
     3555       </p>
     3556
     3557
    34943558 </td>
    34953559
     
    35043568     
    35053569     
    3506       <p><a name="disturbance_level_t"></a><b>disturbance_level_t</b></p>
    3507 
    3508 
    3509 
    3510       </td>
    3511 
    3512 
    3513  <td style="vertical-align: top;">R</td>
    3514 
    3515 
    3516 
    3517       <td style="vertical-align: top;"><i>zu(nz/3) or<br>
    3518 
    3519 
    3520 zu(nzt-3)<br>
    3521 
    3522 
    3523 see right</i></td>
    3524 
    3525 
    3526 
    3527       <td style="vertical-align: top;">
    3528      
    3529      
    3530       <p lang="en-GB"><font face="Thorndale, serif"><font size="3">Upper
    3531 limit of the vertical range for which random perturbations are to be
    3532 imposed on the horizontal wind field (</font></font>in <font face="Thorndale, serif"><font size="3">m).&nbsp;
    3533       </font></font> </p>
    3534 
    3535 
    3536  
    3537      
    3538      
    3539       <p><span lang="en-GB"><font face="Thorndale, serif">This
    3540 parameter must hold the condition <b>disturbance_level_t</b>
    3541 &lt;= zu<i>(</i></font></span><i><a href="chapter_4.1.html#nz"><span lang="en-GB"><font face="Thorndale, serif">nz-2</font></span></a><span lang="en-GB"><font face="Thorndale, serif">)</font></span></i><span lang="en-GB"><font face="Thorndale, serif">.
    3542 Additionally, </font></span><a href="#disturbance_level_b"><span lang="en-GB"><font face="Thorndale, serif">disturbance_level_b</font></span></a>
    3543       <span lang="en-GB"><font face="Thorndale, serif">&lt;=
    3544       <b>disturbance_level_t</b>
    3545 must also hold.</font></span></p>
    3546 
    3547 
    3548       <span lang="en-GB"><font face="Thorndale, serif">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </font></span><span lang="en-GB"><span style="font-family: Thorndale,serif;">the default value is <span style="font-weight: bold;">disturbance_level_t</span> = <span style="font-style: italic;">zu(nzt - 3</span>)</span></span><span lang="en-GB"><span style="font-family: Thorndale,serif;"><span style="font-style: italic;"> </span>(negative)</span></span><span lang="en-GB"><span style="font-family: Thorndale,serif;">.</span></span>
    3549      
    3550      
    3551       <p><span lang="en-GB"><font face="Thorndale, serif">The
    3552 parameter </font></span><a href="#create_disturbances"><span lang="en-GB"><font face="Thorndale, serif">create_disturbances</font></span></a><font face="Thorndale, serif"><span lang="en-GB">
    3553 describes how to impose
    3554 random perturbations to the horizontal velocity field</span></font><font face="Thorndale, serif"><span lang="en-GB">.</span>
    3555       </font> </p>
    3556 
    3557 
    3558  </td>
    3559 
    3560 
    3561  </tr>
    3562 
    3563 
    3564  <tr>
    3565 
    3566 
    3567  <td style="vertical-align: top;">
    3568      
    3569      
    35703570      <p><a name="do2d_at_begin"></a><b>do2d_at_begin</b></p>
    35713571
     
    35823582
    35833583
    3584       <td style="vertical-align: top;">.F.<br>
     3584      <td style="vertical-align: top; font-style: italic;">.F.<br>
    35853585
    35863586
     
    36373637
    36383638
    3639       <td style="vertical-align: top;">.F.<br>
     3639      <td style="vertical-align: top; font-style: italic;">.F.<br>
    36403640
    36413641
     
    36853685
    36863686
    3687       <td style="vertical-align: top;">.F.<br>
     3687      <td style="vertical-align: top; font-style: italic;">.F.<br>
    36883688
    36893689
     
    37623762
    37633763
    3764  <td style="vertical-align: top;">see
     3764 <td style="vertical-align: top; font-style: italic;">see
    37653765right<br>
    37663766
     
    38283828
    38293829
    3830     <tr>
     3830 <tr>
    38313831
    38323832
     
    38523852     
    38533853     
    3854       <p lang="en-GB"><font face="Thorndale, serif"><font size="3">Time
    3855 step to be used by the 3d-model (</font></font>in <font face="Thorndale, serif"><font size="3">s).&nbsp;
    3856       </font></font> </p>
    3857 
    3858 
    3859  
    3860      
    3861      
    3862       <p><span lang="en-GB"><font face="Thorndale, serif">This parameter</font></span>
    3863       <font face="Thorndale, serif"><span lang="en-GB">is
     3854      <font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><font size="3">Time
     3855step to be used by the 3d-model (</font></font><span style="font-family: Helvetica,Arial,sans-serif;">in </span><font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><font size="3">s).&nbsp;
     3856      </font></font>
     3857
     3858
     3859 
     3860     
     3861     
     3862      <p style="font-family: Helvetica,Arial,sans-serif;"><span lang="en-GB">This parameter</span>
     3863      <span lang="en-GB">is
    38643864described in
    3865 detail with the initialization parameters (see</span></font><span lang="en-GB"><font face="Thorndale, serif"> </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale, serif">dt</font></span></a><font face="Thorndale, serif"><span lang="en-GB">).
     3865detail with the initialization parameters (see</span><span lang="en-GB"> </span><a href="chapter_4.1.html#dt"><span lang="en-GB">dt</span></a><span lang="en-GB">).
    38663866Additionally, it may be
    38673867used as a run parameter and then applies to all restart runs (until it
    38683868is changed again). A switch from a constant time step to a variable
    3869 time step can be achieved with <b>dt</b> = <i>-1.0</i>.</span>
    3870       </font> </p>
     3869time step can be achieved with <b>dt</b> = <i>-1.0</i>.</span></p><font face="Thorndale, serif">
     3870      </font>
    38713871
    38723872
     
    39173917
    39183918
    3919       <br>
    3920 
    3921 
    3922       <font face="Thorndale, serif"><span lang="en-GB">With
     3919      <br style="font-family: Helvetica,Arial,sans-serif;">
     3920
     3921
     3922      <font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><span lang="en-GB">With
    39233923variable time step (see <span style="font-weight: bold;">dt</span>),
    39243924the number of time levels entering the average can vary from one
    3925 averaging interval to the next (for a more detailed explanation see </span></font><font><a href="#averaging_interval"><span lang="en-GB"><font face="Thorndale, serif">averaging_interval</font></span></a>)</font><font face="Thorndale, serif"><span lang="en-GB">. It
     3925averaging interval to the next (for a more detailed explanation see </span></font><font style="font-family: Helvetica,Arial,sans-serif;"><a href="#averaging_interval"><span lang="en-GB">averaging_interval</span></a>)</font><font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><span lang="en-GB">. It
    39263926is approximately given by the quotient of <span style="font-weight: bold;">averaging_interval</span> /
    39273927MAX(<span style="font-weight: bold;"> dt_averaging_input</span>,
    39283928      <span style="font-weight: bold;">dt</span>) (which
    39293929gives a more or less exact value if a fixed timestep is used and if
    3930 this is an integral divisor of <span style="font-weight: bold;">dt_averaging_input</span>).</span></font>&nbsp;
    3931       <br>
     3930this is an integral divisor of <span style="font-weight: bold;">dt_averaging_input</span>).</span></font><span style="font-family: Helvetica,Arial,sans-serif;">&nbsp;
     3931      </span><br style="font-family: Helvetica,Arial,sans-serif;">
    39323932
    39333933
  • palm/trunk/DOC/app/chapter_4.6.html

    r237 r240  
    18301830      <td>Canopy mode</td>
    18311831    </tr>
    1832     <tr>
     1832    <tr><td style="font-weight: bold;"><a href="chapter_4.1.html#canyon_height">canyon_height</a></td><td>I</td><td>R</td><td style="font-style: italic;">50.0</td><td>Street canyon height
     1833in m.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#canyon_width_x">canyon_width_x</a></td><td>I</td><td>R</td><td style="font-style: italic;">9999999.9</td><td>Street canyon width in x-direction in m.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#canyon_width_y">canyon_width_y</a></td><td>I</td><td>R</td><td style="font-style: italic;">9999999.9</td><td>Street canyon width in y-direction in m.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#canyon_wall_left">canyon_wall_left</a></td><td>I</td><td>R</td><td style="font-style: italic;">canyon centered in x-direction</td><td>x-coordinate of the left canyon wall&nbsp;in m.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#canyon_wall_south">canyon_wall_south</a></td><td>I</td><td>R</td><td style="font-style: italic;">canyon centered in y-direction</td><td>y-coordinate of the South canyon wall&nbsp;in m.</td></tr><tr>
    18331834
    18341835
     
    34713472
    34723473
    3473  <tr>
     3474 <tr><td style="font-weight: bold;"><a href="chapter_4.1.html#dp_external">dp_external</a></td><td>R</td><td>L</td><td style="font-style: italic;">.F.</td><td>External pressure gradient switch.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#dp_smooth">dp_smooth</a></td><td>R</td><td>L</td><td style="font-style: italic;">.F.</td><td>Vertically smooth the external pressure gradient using a sinusoidal smoothing function.</td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#dp_level_b">dp_level_b</a></td><td>R</td><td>R</td><td style="font-style: italic;">0.0</td><td><font size="3">Lower
     3475limit of the vertical range for which the external pressure gradient is applied (</font>in <font size="3">m).</font></td></tr><tr><td style="font-weight: bold;"><a href="chapter_4.1.html#dpdxy">dpdxy</a></td><td>R</td><td>R (2)</td><td style="font-style: italic;">2 * 0.0</td><td>Values of the external pressure gradient applied in x- and y-direction, respectively (in Pa/m).<br></td></tr><tr>
    34743476      <td><a href="chapter_4.1.html#drag_coefficient"><span style="font-weight: bold;">drag_coefficient</span></a></td>
    34753477      <td>I</td>
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