|January 25, 2005, 22:42||
A special phenomena in simulation rotor/stator int
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?
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