Flow instability of supercritical hydrocarbon fuel in a multi-channel cooling system

doi:10.1016/j.cja.2023.09.027

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Flow instability of supercritical hydrocarbon fuel in a multi-channel cooling system
	Jin YC(靳一超)1,2; Wu K(吴坤)2; Fan XJ(范学军)2,3
刊名	CHINESE JOURNAL OF AERONAUTICS
	2024-02-01
卷号	37 期号:2 页码:283-295
关键词	Cooling Supercritical fluids Hydrocarbons Flow instability Flow maldistribution Density -wave oscillations
ISSN号	1000-9361
DOI	10.1016/j.cja.2023.09.027
通讯作者	Fan, Xuejun(xfan@imech.ac.cn)
英文摘要	Thermally -induced flow instabilities are a critical issue in multi -channel regenerative cooling systems. In particular, the interactions between Density -Wave Oscillations (DWO) and Flow Maldistribution (FMD) can result in complex and disastrous instability phenomena. This study investigates the instability behaviors of hydrocarbon fluid in a four -channel system with a constant heat flux ratio using both frequency- and time -domain methods. As the heat flux increases, the in -tube flow sequentially destabilizes in each channel and converges to new equilibrium states, leading to the emergence of FMD phenomena. This also causes the system eigenvalue to change repeatedly from negative to positive rather than increasing monotonically. Additionally, the system eigenvalues are between those of the two most unstable channels, indicating that the stability behavior of the entire system is dictated by the most unstable channel. After FMD occurs, flow oscillations are activated in channels with weak stability, and the in -tube flow is observed to evolve into various flow patterns, including stable flow, self -sustained oscillation, oscillation divergence, quasiperiodic oscillation, and oscillation excursion. The novel instability mode of oscillation excursion involves a spontaneous transition of operating states. It oscillates from an equilibrium state and then stabilizes at a new operational state after oscillation -induced redistribution. However, the newfound stable state may also be only temporary, with the in -tube flow regressing to the initial state, resulting in quasi -periodic oscillation. (c) 2023 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY -NC -ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
分类号	一类
资助项目	National Key Project, China[GJXM92579] ; Strategic Priority Research Pro- gram of Chinese Academy of Sciences, China[XDA17030100]
WOS关键词	2-PHASE FLOW ; STABILITY ANALYSIS ; PARALLEL CHANNELS ; DYNAMIC-ANALYSIS ; HEATED CHANNEL ; MODEL ; WATER ; TUBE
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:001169170900001
资助机构	National Key Project, China ; Strategic Priority Research Pro- gram of Chinese Academy of Sciences, China
其他责任者	Fan, Xuejun
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94625]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jin YC,Wu K,Fan XJ. Flow instability of supercritical hydrocarbon fuel in a multi-channel cooling system[J]. CHINESE JOURNAL OF AERONAUTICS,2024,37(2):283-295.
APA	靳一超,吴坤,&范学军.(2024).Flow instability of supercritical hydrocarbon fuel in a multi-channel cooling system.CHINESE JOURNAL OF AERONAUTICS,37(2),283-295.
MLA	靳一超,et al."Flow instability of supercritical hydrocarbon fuel in a multi-channel cooling system".CHINESE JOURNAL OF AERONAUTICS 37.2(2024):283-295.