Changeset 75 for palm/trunk/DOC/app
- Timestamp:
- Mar 22, 2007 9:54:05 AM (18 years ago)
- Location:
- palm/trunk/DOC/app
- Files:
-
- 3 edited
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palm/trunk/DOC/app/chapter_4.1.html
r72 r75 88 88 <span style="font-weight: bold;">bc_lr</span> may 89 89 also be 90 assigned the values <span style="font-style: italic;">'dirichlet/ neumann'</span>91 (inflow from left, outflow to the right) or <span style="font-style: italic;">' neumann/dirichlet'</span>90 assigned the values <span style="font-style: italic;">'dirichlet/radiation'</span> 91 (inflow from left, outflow to the right) or <span style="font-style: italic;">'radiation/dirichlet'</span> 92 92 (inflow from 93 93 right, outflow to the left). This requires the multi-grid method to be 94 94 used for solving the Poisson equation for perturbation pressure (see <a href="http://www.muk.uni-hannover.de/%7Eraasch/PALM_group/doc/app/chapter_4.2.html#psolver">psolver</a>) 95 and it also requires cyclic boundary conditions along y (see <br><a href="#bc_ns">bc_ns</a>).<br> <br>95 and it also requires cyclic boundary conditions along y (see <a href="#bc_ns">bc_ns</a>).<br> <br> 96 96 In case of these non-cyclic lateral boundaries, a Dirichlet condition 97 97 is used at the inflow for all quantities (initial vertical profiles - 98 98 see <a href="#initializing_actions">initializing_actions</a> 99 99 - are fixed during the run) except u, to which a Neumann (zero 100 gradient) condition is applied. At the outflow, a Neumann (zero 101 gradient) condition is used for all quantities except v, which is set 102 to its horizontal average along the outflow (e.g. v(k,:,nx+1) = 103 average_along_y( v(k,:,nx)), and except w, which is set to zero 104 (Dirichlet condition). These conditions ensure the velocity field to be 105 free of divergence at the inflow and at the outflow. For perturbation 100 gradient) condition is applied. At the outflow, a radiation condition is used for all velocity components, while a Neumann (zero 101 gradient) condition is used for the scalars. For perturbation 106 102 pressure Neumann (zero gradient) conditions are assumed both at the 107 103 inflow and at the outflow.<br> <br> … … 137 133 <span style="font-weight: bold;">bc_ns</span> may 138 134 also be 139 assigned the values <span style="font-style: italic;">'dirichlet/ neumann'</span>140 (inflow from rear ("north"), outflow to the front ("south")) or <span style="font-style: italic;">' neumann/dirichlet'</span>135 assigned the values <span style="font-style: italic;">'dirichlet/radiation'</span> 136 (inflow from rear ("north"), outflow to the front ("south")) or <span style="font-style: italic;">'radiation/dirichlet'</span> 141 137 (inflow from front ("south"), outflow to the rear ("north")). This 142 138 requires the multi-grid … … 146 142 In case of these non-cyclic lateral boundaries, a Dirichlet condition 147 143 is used at the inflow for all quantities (initial vertical profiles - 148 see <a href="#initializing_actions">initializing_actions</a> 149 - are fixed during the run) except v, to which a Neumann (zero 150 gradient) condition is applied. At the outflow, a Neumann (zero 151 gradient) condition is used for all quantities except u, which is set 152 to its horizontal average along the outflow (e.g. u(k,ny+1,:) = 153 average_along_x( u(k,ny,:)), and except w, which is set to zero 154 (Dirichlet condition). These conditions ensure the velocity field to be 155 free of divergence at the inflow and at the outflow. For perturbation 144 see <a href="chapter_4.1.html#initializing_actions">initializing_actions</a> 145 - are fixed during the run) except u, to which a Neumann (zero 146 gradient) condition is applied. At the outflow, a radiation condition is used for all velocity components, while a Neumann (zero 147 gradient) condition is used for the scalars. For perturbation 156 148 pressure Neumann (zero gradient) conditions are assumed both at the 157 149 inflow and at the outflow.<br> <br> … … 428 420 Also cloud-top cooling by longwave radiation can be utilized (see <a href="#radiation">radiation</a>)<br> <b><br> 429 421 cloud_physics =</b> <span style="font-style: italic;">.TRUE. 430 </span>requires <a href="#moisture">moisture</a>422 </span>requires <a href="#humidity">humidity</a> 431 423 =<span style="font-style: italic;"> .TRUE.</span> .<br> 432 424 Detailed information about the condensation scheme is given in the … … 890 882 the so-called Blackadar mixing length is used (l = kappa * z / ( 1 + 891 883 kappa * z / lambda ) with the limiting value lambda = 2.7E-4 * u_g / f).<br> 892 </td> </tr> <tr> <td style="vertical-align: top;"> <p><a name=" moisture"></a><b>moisture</b></p>884 </td> </tr> <tr> <td style="vertical-align: top;"> <p><a name="humidity"></a><b>humidity</b></p> 893 885 </td> <td style="vertical-align: top;">L</td> 894 886 <td style="vertical-align: top;"><i>.F.</i></td> … … 953 945 <br> <span style="font-weight: bold;">Important: </span>The 954 946 upstream-spline scheme is not implemented for humidity and passive 955 scalars (see <a href="#moisture">moisture</a>947 scalars (see <a href="#humidity">humidity</a> 956 948 and <a href="#passive_scalar">passive_scalar</a>) 957 949 and requires the use of a 2d-domain-decomposition. The last conditions … … 1206 1198 With <span style="font-weight: bold;">passive_scalar</span> 1207 1199 switched 1208 on, the simultaneous use of humidity (see <a href="#moisture">moisture</a>)1200 on, the simultaneous use of humidity (see <a href="#humidity">humidity</a>) 1209 1201 is impossible.</p> </td> </tr> <tr> <td style="vertical-align: top;"> <p><a name="phi"></a><b>phi</b></p> 1210 1202 </td> <td style="vertical-align: top;">R</td> … … 1367 1359 <br> <b>_level</b></p> </td> <td style="vertical-align: top;">R (10)</td> <td style="vertical-align: top;"> <p><i>10 *</i> 1368 1360 <i>0.0</i></p> </td> <td style="vertical-align: top;"> <p>Height level from 1369 which on the moisturegradient defined by <a href="#q_vertical_gradient">q_vertical_gradient</a>1361 which on the humidity gradient defined by <a href="#q_vertical_gradient">q_vertical_gradient</a> 1370 1362 is effective (in m). </p> <p>The height levels 1371 1363 are to be assigned in ascending order. The … … 1533 1525 </p> <p style="margin-left: 40px;"><span style="font-weight: bold;">Important: </span>The 1534 1526 upstream-spline scheme is not implemented for humidity and passive 1535 scalars (see <a href="#moisture">moisture</a>1527 scalars (see <a href="#humidity">humidity</a> 1536 1528 and <a href="#passive_scalar">passive_scalar</a>) 1537 1529 and requires the use of a 2d-domain-decomposition. The last conditions … … 1823 1815 <i> </i><a href="#alpha_surface">alpha_surface</a> 1824 1816 = 0.0, <a href="#bc_lr">bc_lr</a> = <a href="#bc_ns">bc_ns</a> = <span style="font-style: italic;">'cyclic'</span>, <a style="" href="#galilei_transformation">galilei_transformation</a> 1825 = <span style="font-style: italic;">.F.</span>, <a href="#cloud_physics">cloud_physics </a> = <span style="font-style: italic;">.F.</span>, <a href="#cloud_droplets">cloud_droplets</a> = <span style="font-style: italic;">.F.</span>, <a href="#moisture">moisture</a> = <span style="font-style: italic;">.F.</span>, and <a href="#prandtl_layer">prandtl_layer</a> = .T..<br>1817 = <span style="font-style: italic;">.F.</span>, <a href="#cloud_physics">cloud_physics </a> = <span style="font-style: italic;">.F.</span>, <a href="#cloud_droplets">cloud_droplets</a> = <span style="font-style: italic;">.F.</span>, <a href="#humidity">humidity</a> = <span style="font-style: italic;">.F.</span>, and <a href="#prandtl_layer">prandtl_layer</a> = .T..<br> 1826 1818 <font color="#000000"><br> 1827 1819 Note that an inclined model domain requires the use of <span style="font-weight: bold;">topography</span> = <span style="font-style: italic;">'flat'</span> and a -
palm/trunk/DOC/app/chapter_4.2.html
r72 r75 394 394 = <span style="font-style: italic;">.TRUE.</span></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">pt</span></td><td style="width: 196px; vertical-align: top;">potential 395 395 temperature<br></td><td style="vertical-align: top;">K</td><td style="vertical-align: top;"></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">q</span></td><td style="width: 196px; vertical-align: top;">specific humidity 396 (or total water content, if cloud physics is switched on)</td><td style="vertical-align: top;">kg/kg</td><td style="vertical-align: top;">requires <a href="chapter_4.1.html#moisture">moisture</a> = <span style="font-style: italic;">.TRUE.</span></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql</span></td><td style="width: 196px; vertical-align: top;">liquid water396 (or total water content, if cloud physics is switched on)</td><td style="vertical-align: top;">kg/kg</td><td style="vertical-align: top;">requires <a href="chapter_4.1.html#humidity">humidity</a> = <span style="font-style: italic;">.TRUE.</span></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql</span></td><td style="width: 196px; vertical-align: top;">liquid water 397 397 content</td><td style="vertical-align: top;">kg/kg</td><td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_physics">cloud_physics</a> 398 398 = <span style="font-style: italic;">.TRUE.</span> … … 414 414 is allowed</td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">v</span></td><td style="width: 196px; vertical-align: top;">v-component of 415 415 the velocity</td><td style="vertical-align: top;">m/s</td><td style="vertical-align: top;"></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">vpt</span></td><td style="width: 196px; vertical-align: top;">virtual potential 416 temperature</td><td style="vertical-align: top;">K</td><td style="vertical-align: top;">requires <a href="chapter_4.1.html#moisture">moisture</a> = <span style="font-style: italic;">.TRUE.</span></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">w</span></td><td style="width: 196px; vertical-align: top;">w-component of416 temperature</td><td style="vertical-align: top;">K</td><td style="vertical-align: top;">requires <a href="chapter_4.1.html#humidity">humidity</a> = <span style="font-style: italic;">.TRUE.</span></td></tr><tr><td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">w</span></td><td style="width: 196px; vertical-align: top;">w-component of 417 417 the velocity</td><td style="vertical-align: top;">m/s</td><td style="vertical-align: top;"></td></tr><tr><td style="vertical-align: top;"><span style="font-style: italic;">z0*</span></td><td style="vertical-align: top;">roughness length</td><td style="vertical-align: top;">m</td><td></td></tr></tbody></table><br>Multiple 418 418 quantities can be assigned, e.g. <span style="font-weight: bold;">data_output</span> -
palm/trunk/DOC/app/chapter_4.6.html
r72 r75 652 652 <td style="vertical-align: middle;" width="57%"> <p>Variable 653 653 to adjust the subdomain sizes in parallel runs.</p> </td> </tr> 654 <tr> <td style="vertical-align: middle;"><b><a href="chapter_4.1.html#inflow_disturbance_begin"><b>inflow_disturbance_begin</b></a></b></td> 654 <tr><td><b><a href="chapter_4.1.html#humidity"><b>humidity</b></a></b></td><td>I</td><td>L</td><td><span style="font-style: italic;">.F.</span></td><td>Parameter 655 to switch on the prognostic equation for 656 specific 657 humidity q.</td></tr><tr> <td style="vertical-align: middle;"><b><a href="chapter_4.1.html#inflow_disturbance_begin"><b>inflow_disturbance_begin</b></a></b></td> 655 658 <td style="vertical-align: middle;">I<br> </td> 656 659 <td style="vertical-align: middle;">I<br> </td> … … 749 752 which are 750 753 to be created by the <span style="font-weight: bold;">dvrp</span> 751 software. <br> </p> </td> </tr> <tr> 752 <td style="vertical-align: middle;" width="15%"> <p><a href="chapter_4.1.html#moisture"><b>moisture</b></a></p> 753 </td> <td style="vertical-align: middle;" width="5%"> 754 <p>I</p> </td> <td style="vertical-align: middle;" width="7%"> <p>L</p> 755 </td> <td style="vertical-align: middle;" width="16%"> 756 <p><i>.F.</i></p> </td> <td style="vertical-align: middle;" width="57%"> <p>Parameter 757 to switch on the prognostic equation for 758 specific 759 humidity q.</p> </td> </tr> <tr> <td style="vertical-align: middle;" width="15%"> <p><a href="chapter_4.1.html#momentum_advec"><b>momentum_advec</b></a></p> 754 software. <br> </p> </td> </tr> <tr> <td style="vertical-align: middle;" width="15%"> <p><a href="chapter_4.1.html#momentum_advec"><b>momentum_advec</b></a></p> 760 755 </td> <td style="vertical-align: middle;" width="5%"> 761 756 <p>I</p> </td> <td style="vertical-align: middle;" width="7%"> <p>C … … 1105 1100 (10)</p> </td> <td style="vertical-align: middle;" width="16%"> <p><i>10 *</i> <i>0.0</i></p> 1106 1101 </td> <td style="vertical-align: middle;" width="57%"> 1107 <p>Height level from which on the moisturegradient defined1102 <p>Height level from which on the humidity gradient defined 1108 1103 by <a href="chapter_4.1.html#q_vertical_gradient">q_vertical_gradient</a> 1109 1104 is effective (in m). </p> </td> </tr> <tr>
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