The design method used here is relatively independent with the direct procedure of calculation of flow solver by finite volume method , other flow solvers can also be easily coupled with this design method 本文的设计方法与正计算过程有相对的独立性，可分别和不同的流场分析程序耦合，形成翼型设计软件。
In modern aircraft design , there is an urgent requirement for accurate , efficient and easy - use aerodynamic data and computational analysis tools . however , the euler codes cannot satisfy all the demands for simulating the complex flow - fields 现代飞机设计迫切需要计算流体力学为其提供准确、高效、实用的气动数据和流场分析工具，已经不再满足于仅采用euler方程进行数值模拟。
The optimized shape in the parameter range was obtained . in order to studied the lightcraft ’ s flight performance , the 3 - d lightcraft aerodynamic performance research at different altitudes , velocity and angle of attack were simulated . in subsonic situation , the drag coefficient was reducing with the angle of attack increasing , but in supersonic situation , the drag coefficient was increasing with the angle of attack increasing 分析了激光推进技术的基本原理及其特点,对光船的气动性能进行了数值模拟,在流场分析的基础上,对光船的头部外形进行了优化,并给出了参数变化范围内的优化外形;为了进一步研究光船的飞行性能,对不同高度、不同速度和不同攻角等飞行条件下的三维光船气动性能进行了数值研究,研究表明:在亚声速情况下,阻力系数随攻角的增大而减小;超声速情况下,阻力系数随攻角增大而增大。
In modern aircraft design , there is an urgent requirement for accurate , efficient and easy - use aerodynamic data and computational analysis tools . however , the euler codes are not satisfied all the demand for simulating the complex flow - fields . more powerful tools solving navier - stokes ( n - s ) equations are longed for viscous effect , more accurate and more detail information of flow - fields 现代飞机设计迫切需要计算流体力学为其提供准确、高效和实用的气动数据以及流场分析工具，已经不再满足于仅采用euler方程进行数值模拟，它要求数值求解navier - stokes ( n - s )方程组以模拟粘性效应，提供更加准确而详实的流场信息。
The traditional manufacturing method of propellers is basically hand operations requiring considerable skill , time and effort . on the basis of cad / capp / cam / cae integration method and theory , this dissertation investigated the optimal method of propeller based on flow field and structure and the cad / capp / cam / cae integration system based on generalized modular method for propeller is developed 本文在研究搅拌桨cad / capp / cam / cae集成理论和方法的基础上，研究了搅拌桨基于流场分析和结构分析的优化设计，并开发了基于广义模块化技术的搅拌桨cad / capp / cam / cae集成系统。
An airfoil shape design method that couples viscous flow analysis , a complex method and parallel calculation is described in this paper . the method is applied to search an airfoil geometry with improved aerodynamic performance at single or multiple design - point while the specified design constraints being satisfied 本文将流场分析程序、复合形优化方法和并行计算耦合起来，发展了一种工程实用的翼型优化设计方法，用以提高翼型在单个或多个设计点、多种约束条件下的气动性能。
