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发表于 2006-10-18 09:56:30 AM
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原帖由 meal2sleep 于 2006-10-17 09:01 PM 发表
- Z8 g$ z* u% a: ~2 X9 ~陈老师指的应该是这篇文章吧,ashrae transactions- “Design of a ventilation system for an indoor auto-racing complex“.对于这篇文章,有一个疑惑:一个超大型建筑 “Geometry of space long*wide*high= ...
) d7 \- i% x5 y2 r; s ?
- E: x. l; a+ x: {. |$ Y, M; }You are right. The space is probably the largest in the world. The grid number used was small. It was doable and the results look plausible. Your generation has a much faster and larger computer. However, using more grids do not always get better results. For example, when you use wall functions for high Reynolds number flow, finer grid may lead to a very small y+ value. Then the wall function is not valid. It is important to understand the fundamentals of CFD.9 y, }6 n5 a# d$ E
7 M/ g' W) x. vA good news to report. My student today has realized faster than real time CFD simulation on a PC with flow in a cavity with moving wall. The grid used was 30 by 30. It is not conventional CFD, but very exciting. It is not expected to be accurate. However, I am working now on protection of people from chemical/biological agent attacks. It is a very exciting news for us. |
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