Numerical investigation of pressurization performance in cryogenic tank of new-style launch vehicle: PRESSURIZATION PERFORMANCE IN A CRYOGENIC TANK
Numerical investigation of pressurization performance in cryogenic tank of new-style launch vehicle: PRESSURIZATION PERFORMANCE IN A CRYOGENIC TANK
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DOI：
10.1002/apj.1746
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发表时间：
2014
影响因子：
1.8
通讯作者：
Lei Wang;Yanzhong Li;Zhixiang Zhao;Jiang Zheng
中科院分区：
文献类型：
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作者：
Lei Wang;Yanzhong Li;Zhixiang Zhao;Jiang Zheng
采用计算流体动力学方法研究了低温贮箱泄放过程中的增压性能。计算分析了进气温度、进气温度上升时间、壁厚、出流率、喷射器结构、液体过冷度等因素对增压性能的影响。得出了以下几个有价值的结论：（1）提高进气温度、采用薄壁结构、增加出流率有利于降低气体需求量;（2）斜升工艺和采用直管引射器可能导致排放初期压降过大，（3）采用直管引射器可显著降低燃气需求量，但会导致液体推进剂损失大，最终气隙气体重量大，槽内传质方式与喷射器结构和液体过冷度密切相关。随着液体温度的升高，可以观察到向蒸发方向的传质趋势，特别是对于直管喷射器的情况。本文的研究结果对增压系统的设计和优化具有一定的参考价值。© 2013科廷科技大学和约翰威利父子有限公司
The pressurization performance of cryogenic tanks during discharge is investigated by a computational fluid dynamic approach. A series of cases accounting for the effects of various influence factors such as inlet gas temperature, ramp time of inlet gas temperature, wall thickness, outflow rate, injector structure, and liquid supercooling on pressurization behaviors are computed and analyzed successively. Several valuable conclusions have been drawn as follows: (1) Increasing inlet gas temperature, applying a thin wall to construct the tank, and increasing the outflow rate are beneficial to the reduction of gas requirements, (2) Ramp process and use of a straight pipe injector may lead to an excessive pressure drop at the beginning of discharge, (3) Use of straight pipe injector can remarkably reduce the gas requirement but lead to a large loss of liquid propellant as well as a large weight of final ullage gas, and (4) The mode of mass transfer within the tank is close related to the injector structure and liquid supercooling. A trend of mass transfer toward evaporation can be observed by increasing the liquid temperature, especially for the straight pipe injector case. Generally, the results of this paper might be beneficial to the design and optimization of a pressurization system. © 2013 Curtin University of Technology and John Wiley & Sons, Ltd.