水下固体火箭发动机复杂多相流场数值模拟  

Numerical Simulation of Complex Multiphase Flow Field in Underwater Solid Rocket Motor

作　　者：周娟 杨丹[1,2] ZHOU Juan;YANG Dan(School of Naval Architecture&Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Key Laboratory of Hydrodynamics of Ships and Marine Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学船舶与海洋工程学院,武汉430074 [2]华中科技大学船舶和海洋湖北省水动力重点实验室,武汉430074

出　　处：《中国造船》2024年第4期216-229,共14页Shipbuilding of China

基　　金：国家自然科学基金资助项目(12172145)。

摘　　要：由于固体火箭发动机在水下工作时与水环境之间存在剧烈的传热、传质现象,其工作特性与在大气环境中有很大不同。为了获取水下固体火箭发动机的工作特性,建立了其二维轴对称模型,采用高雷诺数k-ε湍流模型对N-S方程进行封闭,利用可以求解相间掺混的Mixture多相流模型对流场进行数值模拟,研究水下固体火箭发动机燃气射流流场的非定常演化过程及推力变化规律。对不同水深条件下的水下高速射流进行数值模拟,获取了射流典型界面演化规律;通过对不同水深条件下物理场的对比,获取了环境背压对推力变化与流场特性的影响规律。Due to the intense heat and mass transfer phenomena between solid rocket motors operating underwater and the water environment,their operating characteristics are greatly different from those in the atmospheric environment.In order to obtain the working characteristics of underwater solid rocket motors,a twodimensional axisymmetric model of underwater solid rocket motors was established.The N-S equation was closed using a high Reynolds k-turbulence model,and the numerical simulation of the flow field was carried out using a Mixture multiphase flow model that can solve for inter phase mixing.The unsteady evolution process and thrust variation law of the gas jet flow field of underwater solid rocket motors were studied.By numerically modeling high-speed underwater jets under different water depth conditions,the typical interface evolution laws of the jet were obtained;By comparing the physical fields under different water depth conditions,the influence of environmental back pressure on thrust changes and flow field characteristics was obtained.

关 键 词：固体火箭发动机 水下燃气射流 多相流 CFD数值模拟 

分 类 号：O359[理学—流体力学]