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首页> 外文期刊>Institution of engineers journal (Inida) >Numerical Simulation of Stage Jettisoning of a Two-Stage Rocket with Different Separation Distances
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Numerical Simulation of Stage Jettisoning of a Two-Stage Rocket with Different Separation Distances

机译：分离距离不同的两阶段火箭弹射级数的数值模拟

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CFD simulations were carried out to evaluate the flow field during the jettisoning process of a two-stage rocket using an inhouse developed RANS code. Two simulations with stage separation distances of 500 mm and 1,000 mm were considered for simulation. For the 500 mm case, there was a severe 'jet-upstream' flow interaction which resulted in an upstream flow separation and hence can cause large drag rise. However, there was no such observation of flow separation anywhere on the upper stage for the 1,000 mm case. A study was carried out to evaluate the effect of spatial order of accuracy for modelling the governing Reynolds Averaged Navier-Stokes (RANS) equations on the simulation results.
机译：使用内部开发的RANS代码进行了CFD模拟，以评估两级火箭抛射过程中的流场。考虑了两个模拟，平台间距为500 mm和1,000 mm。对于500 mm的情况，存在严重的“射流-上游”流动相互作用，这导致上游流动分离，因此可能导致较大的阻力上升。但是，对于1000毫米的情况，在上级的任何地方都没有观察到流分离。进行了一项研究，以评估精确度的空间顺序对建模雷诺兹平均Navier-Stokes（RANS）方程对仿真结果的影响。

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