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

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.