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为研究推进剂在轨加注后残留在管路接头内腔的情况,使用气液两相非稳态模型计算了吹除过程中管路接头内腔气液两相流场变化情况.吹除初始时刻直管路内流场压力出现小幅震荡,管路接头内腔中存在漩涡状流场将残液卷吸入直管路中,是残液得以吹出的主要机理.结果表明管路接头内腔中的绝大部分液体可以被吹除出去,残液吹除效果良好.
In order to study the residue of the propellant in the inner cavity of the pipe joint after in-orbit injection, the gas-liquid two-phase flow field in the inner cavity of the pipe joint was calculated by using the gas-liquid two phase unsteady model. In the initial time, the pressure of the flow field in the straight pipe slightly fluctuated, and the main mechanism of the raffinate being blown out was the swirling flow field in the pipe joint suctioning the raffinate into the straight pipe.The results showed that the inner diameter of the pipe joint Most of the liquid can be blown out, raffinate blowing good effect.