机载布撒器绕流场数值模拟

STAND-OFF AIR-TO-SURFACE DISPENSER FLOW FIELD NUMERICAL SIMULATION

研究机载布撒器绕流场的结构 ,为气动特性分析和外形改进提供依据 .以三维N S方程为出发方程 ,采用S A湍流模型 ,对机载布撒器的绕流场进行了数值模拟 .给出了流场图像和气动特性计算结果 ,并将气动特性计算结果与实验结果进行了比较分析 .气动特性计算结果与风洞实验结果基本吻合 。

Based on the three-dimension Navier-Stokes equations closed with Spalart-Allmaras(S-A) turbulence model, the computational fluid dynamics(CFD) numerical simulation was used to investigate the aerodynamic characteristics of stand-off air-to-surface dispenser. Through the simulation the flow field structures and computational aerodynamic characteristics were obtained. Computational aerodynamic characteristics were found to be in good agreement with wind tunnel test results. The numerical simulation results had been applied to analyze the aerodynamic characteristics and optimize the configuration of stand-off air-to-surface dispenser in engineering design.