通道布置形式对网幕通道式液体获取装置取液性能的影响研究

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中图分类号：V19 文献标志码：A

DOI： 10.7652/xjtuxb202507006 文章编号：0253-987X（2025）07-0056-10

Study on the Effect of Channel Configuration on the Liquid Acquisition Performance of Screen Channel Liquid Acquisition Devices

ZHANG Yue，MA Yuan，WANG Yunlong，LI Yanzhong （School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 71o049，China）

Abstract： To investigate the liquid acquisition performance of the screen channel liquid acquisition devices（SCLADs） installed in cryogenic propellant storage tanks，a thre-dimensional outflow model of a screen collection channel integrated with the tank wallis established for liquid hydrogen tanks.The porous step model is employed to describe the pressure loss characteristics of the screen penetration. The velocity and pressure distributions during the liquid acquisition process are calculated，revealing the influence of wall distance，channel width，and channel curvature on the SCLAD's performance. The results show that the presence of the tank wall induces pressure loss on the outer side of the screen，with the pressure drop increasing along the flow direction， thereby affecting the velocity distribution and liquid acquisition efficiency in the upstream and downstream sections of the channel. Variations in the wall distance （d） and channel width（W） both impact the device's performance.A higher W/d ratio increases the pressure loss on the outer side of the channel，reducing bubble breakthrough risk and enhancing upstream liquid acquisition while slightly compromising downstream performance. However，an excessively large W/d ratio decreases the total liquid acquisition volume， with an optimal W/d ratio of around 10 for maximum eficiency. In the absence of gravity， channel curvature has negligible effects on liquid acquisition. In the presence of gravity，the influence of curved channels depends on the effective length hg in the direction of acceleration，with smaller hg values yielding better acquisition stability.

Keywords： cryogenic propellant; liquid acquisition device； screen liquid collection channel; wall distance；liquid acquisition performance

液氢、液氧等低温推进剂具有高比冲、大推力、无毒无污染等优势，成为实现深空高效运输的首选推进剂，已经成功应用于王星5号、半人马上面级等航天器中[1]，但其低沸点、低表面张力的特性也给低温推进剂在轨管理带来巨大挑战。（剩余15166字）