摘要
A perturbation hodograph technique for solving linearized problems of cavity flows is proposed in this paper. By this method,hydrodynamic force coefficients of supercavitating hydrofoils are given in simple expressions with similarity parameter ⊿ and Ai(coefficients depending on the profile).Approximate expressions,modified by em- pirical correction facfors,are proposed for improving the accuracy of linearized theories appropriate for engineering purpses.The concept of effective similarity parameter ⊿.is discussed.For different profiles,certain nondimensional parameters such as cavity length are depend on ⊿.
A perturbation hodograph technique for solving linearized problems of cavity flows is proposed in this paper. By this method,hydrodynamic force coefficients of supercavitating hydrofoils are given in simple expressions with similarity parameter ⊿ and Ai(coefficients depending on the profile).Approximate expressions,modified by em- pirical correction facfors,are proposed for improving the accuracy of linearized theories appropriate for engineering purpses.The concept of effective similarity parameter ⊿.is discussed.For different profiles,certain nondimensional parameters such as cavity length are depend on ⊿.
基金
the National Foundation of Natural Science
