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发表于 2009-12-25 19:49:31
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来自 英国
本帖最后由 sunnygu 于 2009-12-25 20:22 编辑
The immersed solids method is an additional FSI option in ANSYS CFX that allows simulation of unlimited motion of solid objects through fluid regions, as it avoids any mesh deformation or re-meshing. As an immersed solid passes through a fluid, the region of overlap is determined and the fluid solution is adjusted to reflect the presence of the solid by applying appropriate source terms. The solid motion can be defined by the user, with complete flexibility, or it can be an implicit result from the rigid body solver within ANSYS CFX.
Immersed Solid
Immersed Solid domains can be used in transient simulations to model rigid solid objects that move through fluid domains; for details, see Domain Motion (p. 83) and Immersed Solids (p. 11) in ANSYS CFX-Solver Modeling Guide
The immersed solid is represented as a source term in the fluid equations that drives the fluid velocity to match the solid velocity. The size of the source term is controlled by the Momentum Source Scaling Factor setting, which can be set globally (in the global Solver Control settings) or for individual immersed solids (on the immersed solid domain Solver Control tab). The default value of 10 is acceptable most of the time. If robustness problems are encountered, the scaling factor may be decreased (for example by a factor of 2), but at the expense of accuracy; the difference between the fluid velocity and the specified solid velocity will generally increase, even if only by a small amount
我把模型给了楼主。好像不是他要的。
我这几天看immersed solid可以不。
http://forum.simwe.com/thread-912708-1-1.html
Modeling a Gear Pump using an Immersed Solid
而且,有一个introduction里面讲wind turbine模拟,你可以搜索看看。
http://forum.simwe.com/thread-905116-1-3.html |
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