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西安交通大学能源与动力工程学院, 710049,西安
Received:14 December 2024,
Online First:26 February 2025,
Published:10 July 2025
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ZHANG Yue, MA Yuan, WANG Yunlong, et al. Study on the Effect of Channel Configuration on the Liquid Acquisition Performance of Screen Channel Liquid Acquisition Devices[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 56-65.
ZHANG Yue, MA Yuan, WANG Yunlong, et al. Study on the Effect of Channel Configuration on the Liquid Acquisition Performance of Screen Channel Liquid Acquisition Devices[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 56-65. DOI: 10.7652/xjtuxb202507006.
为研究安装于低温推进剂贮箱内的网幕通道式液体获取装置(SCLAD)取液性能的规律,针对液氢贮箱,建立了结合贮箱壁面的网幕集液通道三维出流模型。采用多孔阶跃模型描述网幕穿透压损特性,对集液通道取液过程中速度、压力分布进行计算,得到了壁面距离、通道宽度、通道弯曲程度等因素对SCLAD取液性能的影响规律。结果表明:贮箱壁面的存在使得网幕外侧压力产生损失,外侧压降沿流动方向增大,从而影响通道上、下游流速分布及取液效果;改变壁面距离
d
和通道宽度
W
均会影响装置取液性能,
W
/
d
越大,通道外侧压损越大,泡破风险更低,也有利于促进通道上游取液而减损通道下游取液效果,但
W
/
d
过大会降低总取液量,
W
/
d
取10左右能达到最佳取液效果;无重力时,通道的弯曲程度几乎不影响取液性能,重力存在时,弯曲通道对取液的影响程度取决于加速度方向上的有效长度
h
g
,
h
g
越小的通道具有更好的取液稳定性。
To investigate the liquid acquisition performance of the screen channel liquid acquisition devices (SCLADs) installed in cryogenic propellant storage tanks
a three-dimensional outflow model of a screen collection channel integrated with the tank wall is 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 efficiency. 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
h
g
in the direction of acceleration
with smaller
h
g
values yielding better acquisition stability.
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