航天推进技术研究院主办
[1]程向华,薛会建,李宏刚,等.低温预冷管路流动及传热非稳态特性研究[J].火箭推进,2018,44(06):53-56.
CHENG Xianghua,XUE Huijian,LI Honggang,et al.Investigation on unsteady characteristics of flow and heat transfer in cryogenic precooling pipe[J].Journal of Rocket Propulsion,2018,44(06):53-56.
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CHENG Xianghua,XUE Huijian,LI Honggang,et al.Investigation on unsteady characteristics of flow and heat transfer in cryogenic precooling pipe[J].Journal of Rocket Propulsion,2018,44(06):53-56.
低温预冷管路流动及传热非稳态特性研究
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
44
期数:
2018年06期
页码:
53-56
栏目:
研究与设计
出版日期:
2018-12-31
- Title:
- Investigation on unsteady characteristics of flow and heat transfer in cryogenic precooling pipe
- 文章编号:
- 1672-9374(2018)06-0053-04
- Keywords:
- unsteady state; circulation precooling; void fraction; filming boiling
- 分类号:
- V434+.3-34
- 文献标志码:
- A
- 摘要:
- 低温液体火箭发动机及管路循环预冷过程涉及复杂的流型转换及传热过程,直接影响发动机及其管路的预冷效果。为准确分析低温介质加注充填过程中循环预冷管路内部的流动及传热特性,建立了一维均相平衡态流体流动及传热数学模型,通过离散化方法分析了非稳态过程液氢预冷循环管路中流体各参数的分布,获得了低温介质充填过程管路传热变化规律及其影响因素。
- Abstract:
- The circulation precooling of cryogenic liquid rocket engine and pipeline involves complicate flow regimes transform and heat transfer process, which affects the precooling effect of the rocket engine and its pipeline distinctly.In order to accurately analyze the flow regimes transform and heat transfer mechanism in the precooling loop during the filling process of cryogenic medium, a one-dimensional mathematical model of fluid dynamic and heat transfer in homogeneous equilibrium state was established.Under the unsteady state, the distribution of fluid parameters in the pipeline of liquid hydrogen precooling cycle was analyzed by using the discretized method.The heat transfer law and its influence factors of cryogenic liquid filling were obtained.The numerical results provide a theoretical basis for studying the precooling performance and optimizing the adiabatic design of pipe.
参考文献/References:
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备注/Memo
收稿日期:2017-10-16; 修回日期:2018-06-14 基金项目:国家自然科学基金(51376142) 作者简介: 程向华(1978—),男,博士,高级工程师,研究领域为低温传热及两相流动
更新日期/Last Update:
2018-12-25