通道布置形式對網(wǎng)幕通道式液體獲取裝置取液性能的影響研究

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中圖分類號：V19 文獻(xiàn)標(biāo)志碼：A

DOI： 10.7652/xjtuxb202507006 文章編號：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

液氫、液氧等低溫推進(jìn)劑具有高比沖、大推力、無毒無污染等優(yōu)勢，成為實(shí)現(xiàn)深空高效運(yùn)輸?shù)氖走x推進(jìn)劑，已經(jīng)成功應(yīng)用于王星5號、半人馬上面級等航天器中[1]，但其低沸點(diǎn)、低表面張力的特性也給低溫推進(jìn)劑在軌管理帶來巨大挑戰(zhàn)。（剩余15166字）