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<div class="local-toc"><ul>
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<li><a class="reference internal" href="#">forceModel_noDrag 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>forceModel_noDrag command</li>
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<div class="section" id="forcemodel-nodrag-command">
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<span id="index-0"></span><h1>forceModel_noDrag command<a class="headerlink" href="#forcemodel-nodrag-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><span class="n">forceModels</span>
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<span class="p">(</span>
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<span class="n">noDrag</span>
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<span class="p">);</span>
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</pre></div>
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</div>
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<p>noDragProps
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{</p>
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<blockquote>
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<div>noDEMForce “switch1”;
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keepCFDForce “switch2”;</div></blockquote>
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<p>}</p>
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<ul class="simple">
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<li><em>switch1</em> = (optional, default false) do not apply the previously calculated forces (implicitly and explicitly treated) in DEM integration</li>
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<li><em>switch2</em> = (optional, default false) do not delete the previously calculated forces (implicitly and explicitly treated) and use them in CFD source terms</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><span class="n">forceModels</span>
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<span class="p">(</span>
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<span class="n">noDrag</span>
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<span class="p">);</span>
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</pre></div>
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</div>
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<div class="highlight-python"><div class="highlight"><pre>noDragProps
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{
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noDEMForce true;
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keepCFDForce false;
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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 force model performs the calculation of forces (e.g. fluid-particle interaction forces) acting on each DEM particle. The noDrag model sets the forces acting on the particle (which were previously caclulated) to zero. If several force models are selected and noDrag is the last model being executed, the fluid particle force will be set to zero. If the variable noDEMForce is set, then the forces communicated to the DEM solver are also set to zero.</p>
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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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<p>None.</p>
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</div>
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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="forceModel.html"><em>forceModel</em></a></p>
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