非对向法和混合编程在叶栅流场测量中的应用

Application of non-nulling mode method and mixed language programming in measurement of cascade flow field

基于气动探针非对向测量原理,给出了求解叶栅流场气动参数的凸四边形插值计算方法,并通过VB与Fortran混合编程,利用动态链接库技术在不同语言间实现数据交换,开发了集计算、显示及分析为一体的叶栅风洞实验数据可视化处理系统。不同计算方法的对比分析表明:该方法提高了计算精确度和工作效率,其原理对采用非对向测量方法的其他气动测量仪器(如热线风速仪)也是适用的。

An improved interpolating procedure was introduced by non-nuling mode method to solve aerodynamic parameters in the cascade flow field. Based on the concept of Fortran and VB language mixed programming, a method of using dynamic link library to exchange data between the different languages was put forward, and a visualized processing system of cascade wind tunnel test included the functions of calculating, displaying and analyzing was developed. Typical measured data showed that the solution precision and efficiency were increased, and the method was valid for the data obtained using other types of instrumentation, such as HWA.