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Only one Domain or Multi-Domain

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Old   May 11, 2006, 10:59
Default Only one Domain or Multi-Domain
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Camilo Costa
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I study one simple cavity (2D: in axis z have one lelement) that have in your left side eletronic circuits whith diferents geometrics and diferents heat flux generation(5W, 20W, 2000W, etc.). In the right side have a wall that have temperature constant. The top and botton are isolated. My Ra number is 1,4E13 because a greater heat generation, and because this i have a turbulents recircutaions.

My mesh is total hexagonal that contais 320000 elements and i simulate this in a cluster whit have four pcs that have a processor pentioun 4 3000 and 1 Gb of memory ram.

I can modelate this in only on domain that contains all circuits and walls. But my question is? If divide my domain in 4 and put interfaces fluid-fluid for this 4 domains my simulation will go more faster?
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Old   May 12, 2006, 02:15
Default Re: Only one Domain or Multi-Domain
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Sachin Shendge
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Hi

If you want to use tetramesh for some regions and hexamesh for some regions for better accuracy, it is worth using different domains. Otherwise single domain is sufficient. Using fluid-fluid interfaces will unnecessarily increase cpu time and also flow through interface will be somewhat inaccurate as compared to single domain.

Sachin

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