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采用欧拉-拉格朗日方法对燃气-蒸汽发射动力装置内高温高压超声速燃气中横向喷雾的气液两相流进行了数值模拟研究,气相采用RK(Runge-Kutta)-AUSM+(advection upstream splitting method+)格式求解Navier-Stokes方程,液相应用颗粒轨道模型,两相之间的耦合通过在气相各守恒方程中添加源项来实现.针对不同的喷水孔径、喷水压差以及水气质量比进行了数值模拟计算,分析了各种条件下的液滴蒸发情况以及对气相流场和能量输出的影响,为燃气-蒸汽发射动力装置的设计优化和能量调节技术提供了理论依据.
The Euler-Lagrange method was used to simulate the gas-liquid two-phase flow in the transverse spray in the high-temperature and high-pressure supersonic gas in the gas-steam launch power plant. The gas phase was simulated by RK (Runge-Kutta) -AUSM + method to solve the Navier-Stokes equation and the liquid-phase model using the particle orbital model, the coupling between the two phases is achieved by adding source terms to each conservation equation of the gas phase. For different water jet diameters, water pressure and water vapor mass The numerical simulation was carried out and the influence of droplet evaporation and gas flow on the gas flow and energy output under various conditions was analyzed. This provides a theoretical basis for the design optimization and energy regulation of the gas-steam engine.