Parallel Numerical Study of the Unsteady Flow in 3-Dimensional Linear Cascade

Dynamic separation is directly connected with the issue of the safety and economy in compressor operation.Therefore,the study of separated flow is of great significance in the investigation of flow field in turbomachinery.In this report a genernal program code for numerical simulation of 3 Dimensional linear compressor cascade is developed.In this code,high accuracy difference schemes and B L turbulence model are used.For testing the code,numerical simulations of the 3 Dimensional flow field in compressor cascade for various attack angles are performed and compared with experimental results.The numerical results agree well with the corresponding experimental results,thus the code is verified.The spectrum of pressure fluctuation at the attack angle of 10 degree agrees with those from experiment qualitatively,it shows that this code can be used to simulate the dynamic sparational flow.The code is deserialized and optimized for PC Cluster,actual computations show that the code has very high parallel efficiency.