| JIN Nan, HU Jun, LI Jun.Numerical Predicting 47Study on Compressor Surge Margin[J].航空发动机,2017,43(4):48-55 |
| Numerical Predicting 47Study on Compressor Surge Margin |
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| Key Words:axial compressor surge margin numerical simulation maximum pressure rise method aeroengine |
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| Abstract:In order to evaluate the accuracy of different method in predicting surge margin of axial compressor, a fourth-stage lowspeed
model compressor was numerically simulated by maximum pressure rise method and commercial CFD software MUNECA, and the
result was compared to experiment data. The calculation result shows that the maximum pressure rise method has certain accuracy according
to experiment data. The simulation calculation of a fourth stage compressor was performed using NUMECA software, considering the
influence of meshing means, different turbulence models and different scheme on surge margin, and taking numerical divergence as the
instability standard of compressor. The results show that the factors in consideration all influence the accuracy of the simulation results,
especially grid percentage of mid-flow cells, and the result of central difference scheme is the best in three schemes. |
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