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固体火箭发动机大尺度多相内流场的大涡模拟

Large Eddy Simulation of Large Scale Multiphase Flow for Solid Rocket Motor
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摘要 使用大涡模拟方法对含有铝液滴和氧化物烟雾的固体火箭发动机复杂多相湍流流场进行了数值模拟研究,在大涡模拟中使用Smagorinsky涡黏模型计算亚格子尺度应力张量。拉格朗日方法被用来实时跟踪铝液滴在流场中的位置和速度,同时采用平衡欧拉近似方法计算烟雾的速度场,并利用这个速度场求解描述烟雾浓度的对流扩散方程。最后,使用该计算模型对某型SRM进行了数值模拟,结果给出了正确的流场结构,显示出计算模型的正确性。 Large eddy simulation method was employed to carry out numerical research on complex multiphase turbulent flow containing Al droplets and resulting oxide smoke inside solid rocket motor (SRM). Smagorinsky eddy viscosity formulation was used to calculate sub-grid scale stress tensor. The velocity and position of Al droplets was tracked with Lagrangian method in real time. Velocity field of oxide smoke was solved by equilibrium Eulerian approximation. Then the velocity filed was used to solve an advection diffusion equation describing concentration of the oxide smoke. Finally, numerical simulation was carried out on certain type of SRM by this computational framework. Correct flow structure was given by simulation result which shows correctness of the computational framework.
作者 范兵 关正西
出处 《弹箭与制导学报》 CSCD 北大核心 2008年第2期146-148,共3页 Journal of Projectiles,Rockets,Missiles and Guidance
关键词 固体火箭发动机 大涡模拟 多相流 湍流 solid rocket motor large eddy simulation multiphase flow turbulence
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参考文献6

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