In order to accurately predict detached shockwaves from the supersonic cascade leading edge

the supersonic cascade detached shockwaves model based on Moeckel method was built by analysis and formula derivation.Firstly

Moeckel method was improved to increase symmetrical detached shockwaves approximation accuracy on the uniform flow condition.And then

Moeckel method was extended to approximate the asymmetric detached shockwaves on the uniform flow condition.Finally

the detached shockwaves model was constructed according to supersonic cascade flow characteristics.The resulting model was used for three supersonic cascades to predict the shape and position of detached shockwaves from leading edge of cascades.And the predicted results were compared with the CFD solved results.The results show that improved Moeckel method can more accurately approximate symmetrical detached shockwaves and also can be used for predicting asymmetric detached shockwaves

while the shape and location of detached shockwaves obtained by the model is consistent with those obtained by CFD software.