A new proposal is put forward at the end of the thesis that the destruction caused by the combination of cavitation and sand abrasion can be mitigated by means of controlling the turbulent coherent structure near the wall.

• 最后用有关的结论对过去的空蚀与泥沙磨损联合作用的一些试验观测结果进行了定性的分析、评述，并提出通过控制拟序结构的发生以达到控制空泡、沙粒对壁面的冲击作用是减轻磨蚀破坏的一条新的途径。