基于过流面冲蚀波纹形貌特征与流体边界层扰动波参数的对应关系，提出了实现弹性涂层边壁与边界层扰动波的同步波动，从而变边壁被动承受粒子冲击为主动回避与粒子的碰撞的抗冲蚀设计思想；分析了实现弹性涂层边壁与边界层扰动波同步波动的条件，并由此确定出弹性涂层的材料常数。

Based on the corresponding relation of characteristic parameters between the perturbation wave of boundary layer and the surface erosion corrugation wave of fluid-pass section, the anti-erosion design idea is proposed, which can realize the synchronistic fluctuate of elastic coating channel border with the perturbation of boundary layer, and change the passive state that channel border bears particle's impacting into that the channel border collision contacts with particles on its own initiative. The condition of realized synchronous fluctuation of elastic coating channel border with the perturbation of boundary layer is analyzed. On the basis of analysis result, the method of determining the material parameters of elastic coating is proposed.