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Hi all,
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<div>Thank you for your suggestions. I'll have a go at producing a new postprocessor by adapting the velocity statistics one.</div>
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<div>I did run into a problem with a model considering 8 compositional fields; it got stopped because it was exceeding the allowed virtual and physical memory usage.</div>
<div>I restarted the same run, but with a CLF number of 1.0e-6. Hence, the number of elements, degrees of freedom, global mass etc is constant. However, the memory usage keeps increasing (see snapshot).</div>
<div>A similar increase is seen for a high resolution, uniform and constant grid Rayleigh-Taylor instability using 1 compositional field and material model simple.cc, only then the usage doesn't exceed the limit.</div>
<div>Do you have an idea about the cause of this memory runaway?</div>
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<div>Thank you,</div>
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<div>Anne</div>
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<div><b style="color: rgb(51, 0, 153); "><span lang="NL" style="font-size: 7.5pt; "><font face="Verdana">Anne Glerum, MSc </font></span></b><a name="x_SafeHtmlFilter_13a4ab32afe5707b_OLE_LINK2" style="color: rgb(153, 0, 0); "><span lang="NL" style="font-size: 8pt; "><font face="Verdana">|</font></span></a><font face="Verdana" style="color: rgb(51, 0, 153); "><span><span lang="NL" style="font-size: 8pt; "> PhD
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<div>On Jan 27, 2013, at 11:38 PM, Timo Heister wrote:</div>
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<blockquote type="cite">For<br>
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<blockquote type="cite">example, I would be interested in the Vrms and dissipation of energy of<br>
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<blockquote type="cite">only the downgoing slab (where the slab is represented by one<br>
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<blockquote type="cite">compositional field). This would greatly help with the benchmark model I<br>
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<blockquote type="cite">am working on.<br>
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<blockquote type="cite"><br>
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<blockquote type="cite">Yes, in a case like this I would look at how the velocity statistics<br>
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<blockquote type="cite">postprocessor is written. What you want to do is clone it to compute<br>
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<blockquote type="cite">what you describe. Essentially, what you'll have to do is only add to<br>
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<blockquote type="cite">the integral and area whenever you find that a particular quadrature<br>
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<blockquote type="cite">point satisfies the criteria by which you define whether it is part of<br>
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<blockquote type="cite">the slab.<br>
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To extend on that, if your compositional field is 1 for "interesting"<br>
and 0 for "not interesting", you can just multiply the integral by the<br>
value of the compositional field at that quadrature point.<br>
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-- <br>
Timo Heister<br>
<a href="http://www.math.tamu.edu/~heister/">http://www.math.tamu.edu/~heister/</a><br>
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