Effect of the distortion ratio on flow similarity in the physical model

A 2-D mathematical model is applied in the paper.By the calculating of the distorted models and the undistorted model of the circumfluence,the effect of the distortion ration on the flow is analyzed.The flow dynamic axis in the distorted models is smoother than that in the undistorted model,while the flow horizontal gradient in the distortion model is smaller than that in the undistorted model.The results of the elementary analyses are provided.