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进行了潜艇应急燃气吹除系统的小比例模型原理实验,模拟了水下100 m深度时燃气吹除的排水性能与规律以及燃气吹除过程中的主要性能参数变化情况.建立了模拟小比例实验吹除过程的物理模型,应用结构化六面体网格对其两相流体流动区域进行了计算区域的离散化,并对100m海水深度下的燃气吹除过程进行了数值仿真计算,得到了对燃气泡成长规律的描述,深化了对排水过程机理的认识.仿真结果与实际情况的实验结果十分吻合,混合气体压力和排水总体积的相对误差均不超过5%,验证了数值仿真方法的可行性.
The submarine emergency gas purging system was experimented by the principle of small scale model to simulate the performance and rule of the gas purging drainage and the change of the main performance parameters in the process of purging the gas at a depth of 100 m. The physical model of blowing process is discretized in the flow field of two-phase fluid by structured hexahedron grid. The gas blowing process under 100 m seawater depth is numerically simulated. The description of the growth pattern deepens the understanding of the mechanism of the drainage process.The simulation results are in good agreement with the actual experimental results, and the relative errors between the pressure of the mixed gas and the total volume of the drainage do not exceed 5%, which verifies the feasibility of the numerical simulation method.