A detail research has been completed for calculation of end wall boundary layers within an axial compressor cascade.A new calculation model for blade force defect is proposed,which is associated with development of pr...A detail research has been completed for calculation of end wall boundary layers within an axial compressor cascade.A new calculation model for blade force defect is proposed,which is associated with development of primary flow and transverse flow.A unique feature of this method lies not only in capability to calculate the development of end wall boundary layers inside the cascade passage without any assumption about the exit of cascade,but also in ability to take into account the influecnce of its tip clearance.The calculational results of three heavily loaded cascades show that this model is superior to other existing models.展开更多
An improved random vortex model for predicting maximum instantaneous pressure distortion is presented based on the statistical behavior of turbulence type dynamic inlet total field generated by plate type turbulence g...An improved random vortex model for predicting maximum instantaneous pressure distortion is presented based on the statistical behavior of turbulence type dynamic inlet total field generated by plate type turbulence generator.A new statistical method is put forward for determining the vortex core size.The numerical results show good accuracy of the prediction.This method also decreases the dynamic inlet pressure measurements.The effectiveness of the method in decreasing both cost and time is proved well.展开更多
文摘A detail research has been completed for calculation of end wall boundary layers within an axial compressor cascade.A new calculation model for blade force defect is proposed,which is associated with development of primary flow and transverse flow.A unique feature of this method lies not only in capability to calculate the development of end wall boundary layers inside the cascade passage without any assumption about the exit of cascade,but also in ability to take into account the influecnce of its tip clearance.The calculational results of three heavily loaded cascades show that this model is superior to other existing models.
文摘An improved random vortex model for predicting maximum instantaneous pressure distortion is presented based on the statistical behavior of turbulence type dynamic inlet total field generated by plate type turbulence generator.A new statistical method is put forward for determining the vortex core size.The numerical results show good accuracy of the prediction.This method also decreases the dynamic inlet pressure measurements.The effectiveness of the method in decreasing both cost and time is proved well.