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v3.X
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<div class="local-toc"><ul>
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<li><a class="reference internal" href="#">voidfractionModel_GaussVoidFraction command</a><ul>
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<li><a class="reference internal" href="#syntax">Syntax</a></li>
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<li><a class="reference internal" href="#examples">Examples</a></li>
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<li><a class="reference internal" href="#description">Description</a></li>
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<li><a class="reference internal" href="#restrictions">Restrictions</a></li>
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<li>voidfractionModel_GaussVoidFraction command</li>
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<div class="section" id="voidfractionmodel-gaussvoidfraction-command">
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<span id="index-0"></span><h1>voidfractionModel_GaussVoidFraction command<a class="headerlink" href="#voidfractionmodel-gaussvoidfraction-command" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="syntax">
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<h2>Syntax<a class="headerlink" href="#syntax" title="Permalink to this headline">¶</a></h2>
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<p>Defined in couplingProperties dictionary.</p>
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<div class="highlight-python"><div class="highlight"><pre>voidfractionModel Gauss;
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GaussProps
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{
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maxCellsPerParticle number1;
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alphaMin number2;
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weight number3;
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porosity number4;
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}
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</pre></div>
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<ul class="simple">
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<li><em>number1</em> = maximum number of cells covered by a particle (search will fail when more than <em>number1</em> cells are covered by the particle)</li>
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<li><em>number2</em> = minimum limit for voidfraction</li>
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<li><em>number3</em> = (optional) scaling of the particle volume to account for porosity or agglomerations.</li>
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<li><em>number4</em> = (optional) diameter of the particle’s representation is artificially increased according to <em>number2</em> * Vparticle, volume remains unaltered!</li>
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<div class="section" id="examples">
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<h2>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-python"><div class="highlight"><pre>voidfractionModel Gauss;
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GaussProps
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{
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maxCellsPerParticle 1000;
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alphaMin 0.10;
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weight 1.;
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porosity 1.;
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}
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</pre></div>
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<div class="section" id="description">
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<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
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<p>The Gauss voidFraction model is supposed to be used when a particle (or its representation) is bigger than a CFD cell. The voidfraction field is set in those cell whose centres are inside the particle. The volume is here distributed according to a Gaussian distribution.</p>
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<p>The region of influence of a particle can be increased artificially by “porosity”, which blows up the particles, but keeps their volume (for voidfraction calculation) constant.</p>
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<p>The particle volume occupied in the CFD domain can be adjusted by the parameter “weight”, using Vparticle=dsphere^3*pi/6*weight.</p>
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</div>
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<div class="section" id="restrictions">
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<h2>Restrictions<a class="headerlink" href="#restrictions" title="Permalink to this headline">¶</a></h2>
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<blockquote>
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<div>none.</div></blockquote>
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<div class="section" id="related-commands">
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<h2>Related commands<a class="headerlink" href="#related-commands" title="Permalink to this headline">¶</a></h2>
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<p><a class="reference internal" href="voidFractionModel.html"><em>voidfractionModel</em></a> , <a class="reference internal" href="voidFractionModel_bigParticleVoidFraction.html"><em>bigParticle</em></a></p>
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