Secondary Development of FLUENT and Application in Numerical Simulation of Aerodynamic Characteristics for Rockets

This paper develops a calculational program based on the commercial CFD code FLUENT to calculate the aerodynamic characteristic for rockets.The text user interface(TUI) commands of the solution parameters are listed in the input files,then the files are read by FLUENT run in batch execution,which reduces the users′ input and improves designing efficiency.Two rockets of different type are simulated at 4°,0.4,0.6,0.8,1.0,1.2,2.0.The normal force coefficient,center of pressure coefficient and lift coefficient of the whole rocket are computed at different mach numbers.The numerical results of test cases agree well with the experimental data,and the program can supply aerodynamic data for the pre-designing of rockets.