不同栅格壁形状的栅格翼导弹气动特性对比研究

针对栅格翼在导弹上具有重大的应用价值，研究不同格壁形状的栅格翼导弹气动特性。通过介绍控制方程、边界条件和计算条件，采用FLUENT数值模拟的方法研究四角形格壁、菱形格壁和矩形格壁3种格壁形状的栅格翼导弹气动特性，并通过计算分析得出栅格翼导弹的升阻比在研究范围内随着马赫数变化而变化，3种模型变化趋势基本一样。分析结果表明：四角形格壁栅格翼型导弹和菱形格壁栅格翼型导弹的气动性能，优于矩形格壁栅格翼型导弹。

Comparative Study on Aerodynamic Characteristics of Grid Fin Missile with Different Lattice Wall Shapes

The grid fin has great application value in the missile, study on aerodynamic characteristics of grid fin missile with different lattice wall shapes. The control equations, boundary conditions, and calculation conditions are introduced, use FLUENT numerical simulation method to study the aerodynamic characteristics of the grid fin missile with quadrangle lattice wall shape, diamond lattice wall shape, and rectangular lattice wall shape, and carries on the computation analysis. It is concluded that the lift drag ratio of the grid fin missile varies with the change of Mach number in the research area, the three kinds of model changes are basically the same. Analysis results show that: the aerodynamic performance of the four angle grid lattice wall grid airfoil missile and the diamond grid airfoil missile is better than that of the rectangular grid.