Changeset 328 for palm/trunk/DOC


Ignore:
Timestamp:
May 28, 2009 12:13:56 PM (13 years ago)
Author:
letzel
Message:
  • initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now independent of turbulent_inflow (check_parameters, header, init_3d_model)
Location:
palm/trunk/DOC/app
Files:
2 edited

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  • palm/trunk/DOC/app/chapter_3.9.html

    r220 r328  
    5050the end</span> of the precursor run. The profile information is then contained
    5151in the restart (binary) file created at the end of the precursor run
    52 and can be used by the main run. <span style="font-weight: bold;">It is very important that the mean profiles at the end of the precursor run are in a stationary or quasi-stationary state</span>, because otherwise it may not be justified to use them as constant profiles at the inflow. <span style="font-weight: bold;">Also, turbulence at the end of the precursor run should be fully developed. </span>Otherwise, the main run would need an additional spinup-time at the beginning to get the turbulence to its final stage.<br></li><li>In order to read the binary data from the precursor run, parameter <a href="chapter_4.1.html#initializing_actions">initializing_actions</a> = <span style="font-style: italic;">'read_data_for_recycling'</span> has to be set in the main run. &nbsp; .... &nbsp;
     52and can be used by the main run. <span style="font-weight: bold;">It is very important that the mean profiles at the end of the precursor run are in a stationary or quasi-stationary state</span>, because otherwise it may not be justified to use them as constant profiles at the inflow. <span style="font-weight: bold;">Also, turbulence at the end of the precursor run should be fully developed. </span>Otherwise, the main run would need an additional spinup-time at the beginning to get the turbulence to its final stage.<br></li><li>In order to read the binary data from the precursor run, parameter <a href="chapter_4.1.html#initializing_actions">initializing_actions</a> = <span style="font-style: italic;">'cyclic_fill'</span> has to be set in the main run. &nbsp; .... &nbsp;
    5353&nbsp; set bc_lr = 'dirichlet/radiation' ... &nbsp;
    5454conserve_volume_flow = .TRUE. ? ....</li><li>The main run allows to use a larger domain along x and y than in the precursor run ...</li><li>Recycling width should be equal to the domain size of the precursor run (or larger?)</li></ul><pre style="line-height: 100%;"><font style="font-size: 10pt;" size="2">#</font><br><font style="font-size: 10pt;" size="2">RUN_CONTROL<span style="font-weight: bold;">_O</span></font><font style="font-size: 10pt;" size="2"> out:loc:tr d3<span style="font-weight: bold;">o</span># ~/palm/current_version/JOBS/$fname/MONITORING <span style="font-weight: bold;">_</span></font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">o</span>_</font><font style="font-size: 10pt;" size="2">rc</font><br><font style="font-size: 10pt;" size="2">HEADER</font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">_O</span> out:loc:tr d3<span style="font-weight: bold;">o</span># ~/palm/current_version/JOBS/$fname/MONITORING <span style="font-weight: bold;">_</span></font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">o</span>_</font><font style="font-size: 10pt;" size="2">header</font><br><font style="font-size: 10pt;" size="2">PLOT1D_PAR<span style="font-weight: bold;">_O</span></font><font style="font-size: 10pt;" size="2"> out:loc:tr pr<span style="font-weight: bold;">o</span># ~/palm/current_version/JOBS/$fname/OUTPUT <span style="font-weight: bold;">_</span></font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">o</span>_</font><font style="font-size: 10pt;" size="2">pr_par</font><br><font style="font-size: 10pt;" size="2">PLOT1D_DATA</font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">_O</span> out:loc:tr pr<span style="font-weight: bold;">o</span># ~/palm/current_version/JOBS/$fname/OUTPUT <span style="font-weight: bold;">_</span></font><font style="font-size: 10pt;" size="2"><span style="font-weight: bold;">o</span>_</font><font style="font-size: 10pt;" size="2">pr_in</font><br></pre><br><hr>
  • palm/trunk/DOC/app/chapter_4.1.html

    r305 r328  
    63526352     
    63536353     
    6354       <p style="font-style: italic;">'read_data_for_recycling'</p><p style="font-style: normal; margin-left: 40px;">Here,
     6354      <p style="font-style: italic;">'cyclic_fill'</p><p style="font-style: normal; margin-left: 40px;">Here,
    635563553d-data from a precursor run are read by the initial (main) run. The
    63566356precursor run is allowed to have a smaller domain along x and y
    63576357compared with the main run. Also, different numbers of processors can
    63586358be used for these two runs. Limitations are that the precursor run must
    6359 use cyclic horizontal boundary conditions and that the subdomains of
    6360 the main run must not be larger than the subdomains of the precursor
    6361 run. If the total domain of the main run is larger than that of the precursor
     6359use cyclic horizontal boundary conditions and that the number of vertical grid points, <a href="#nz">nz</a>, must be same for the precursor run and the main run. If the total domain of the main run is larger than that of the precursor
    63626360run, the domain is filled by cyclic repetition&nbsp;of the (cyclic)
    63636361precursor data. This initialization method is recommended if a
     
    1497514973
    1497614974
    14977     <tr><td style="vertical-align: top;"><a name="turbulent_inflow"></a><span style="font-weight: bold;">turbulent_inflow</span></td><td style="vertical-align: top;">L</td><td style="vertical-align: top;"><span style="font-style: italic;">.F.</span></td><td style="vertical-align: top;">Generates a turbulent inflow at side boundaries using a turbulence recycling method.<br><br>Turbulent inflow is realized using the turbulence recycling method from Lund et al. (1998, J. Comp. Phys., <span style="font-weight: bold;">140</span>, 233-258) modified by Kataoka and Mizuno (2002, Wind and Structures, <span style="font-weight: bold;">5</span>, 379-392).<br><br>A turbulent inflow requires Dirichlet conditions at the respective inflow boundary. <span style="font-weight: bold;">So far, a turbulent inflow is realized from the left (west) side only, i.e. </span><a style="font-weight: bold;" href="chapter_4.1.html#bc_lr">bc_lr</a><span style="font-weight: bold;">&nbsp;=</span><span style="font-style: italic; font-weight: bold;"> 'dirichlet/radiation'</span><span style="font-weight: bold;"> is required!</span><br><br>The initial (quasi-stationary) turbulence field should be generated by a precursor run and used by setting <a href="chapter_4.1.html#initializing_actions">initializing_actions</a> =<span style="font-style: italic;"> 'read_data_for_recycling'</span>.<br><br>The distance of the recycling plane from the inflow boundary can be set with parameter <a href="chapter_4.1.html#recycling_width">recycling_width</a>.
     14975    <tr><td style="vertical-align: top;"><a name="turbulent_inflow"></a><span style="font-weight: bold;">turbulent_inflow</span></td><td style="vertical-align: top;">L</td><td style="vertical-align: top;"><span style="font-style: italic;">.F.</span></td><td style="vertical-align: top;">Generates a turbulent inflow at side boundaries using a turbulence recycling method.<br><br>Turbulent inflow is realized using the turbulence recycling method from Lund et al. (1998, J. Comp. Phys., <span style="font-weight: bold;">140</span>, 233-258) modified by Kataoka and Mizuno (2002, Wind and Structures, <span style="font-weight: bold;">5</span>, 379-392).<br><br>A turbulent inflow requires Dirichlet conditions at the respective inflow boundary. <span style="font-weight: bold;">So far, a turbulent inflow is realized from the left (west) side only, i.e. </span><a style="font-weight: bold;" href="chapter_4.1.html#bc_lr">bc_lr</a><span style="font-weight: bold;">&nbsp;=</span><span style="font-style: italic; font-weight: bold;"> 'dirichlet/radiation'</span><span style="font-weight: bold;"> is required!</span><br><br>The initial (quasi-stationary) turbulence field should be generated by a precursor run and used by setting <a href="chapter_4.1.html#initializing_actions">initializing_actions</a> =<span style="font-style: italic;"> 'cyclic_fill'</span>.<br><br>The distance of the recycling plane from the inflow boundary can be set with parameter <a href="chapter_4.1.html#recycling_width">recycling_width</a>.
    1497814976The heigth above ground above which the turbulence signal is not used
    1497914977for recycling and the width of the layer within&nbsp;the magnitude of
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