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A special phenomena in simulation rotor/stator int |
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January 25, 2005, 21:42 |
A special phenomena in simulation rotor/stator int
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Hello everyone,
When I use fluent simulate rotor/stator interaction in axial compressor(substract tip section and modelled as 2D problem), there is an interesting phenomena. That is, it will converge very slowly. it generally need over 10000~20000physical time steps(60 time steps for one period), not like that in turbine case in which only 1000 physical time steps(60 time steps per period) are enough. As I browse iterating history, it is found that there is always a long wave(5~6 times of final periodic wave) taking effect regardless of what back pressure is set. What's wrong with my simulation? Have you ever come across such a problem? Regards Ji |
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