Oscillation and evolution characteristics of nanofluid thermocapillary convection in rectangular cavity

doi:10.1016/j.molliq.2023.122890

	Oscillation and evolution characteristics of nanofluid thermocapillary convection in rectangular cavity
	Zhou, Xiaoming 2; Dai, Cheng 2; Jiang, Yanni 2; Chen, Qisheng 1
刊名	JOURNAL OF MOLECULAR LIQUIDS
	2023-11-15
卷号	390 页码:10
关键词	Nanofluid Thermocapillary convection Flow instability Two-phase mixture models
ISSN号	0167-7322
DOI	10.1016/j.molliq.2023.122890
通讯作者	Jiang, Yanni(ynjiang@hhu.edu.cn)
英文摘要	To analyze the oscillation and evolution characteristics of nanofluid thermocapillary convection instability, a two-phase mixture model was utilized to simulate nanofluid thermocapillary convection in a rectangular cavity and investigate the impact of nanoparticle volume fraction on the oscillatory flow. The results indicate that the two-phase mixture model has a lower critical temperature difference compared to the single-phase model, and the oscillation mode exhibits distinct changes for small nanoparticle volume fractions. At a high Marangoni number, the thermocapillary convection displays periodic oscillatory behavior, with the flow field composed of several dynamic convection vortices. An increase in nanoparticle volume fraction results in a decrease in the critical temperature difference, as well as the amplitude and variation range of temperature oscillation. However, the oscillation period shows an approximate linear increase. Furthermore, there is a non-uniform distribution of nanoparticles at the vicinity of solid wall, especially a significant concentration gradient near the side wall.
资助项目	National Natural Science Foundation of China[12102128] ; National Natural Science Foundation of China[51976080] ; opening project of CAS Key Laboratory of Microgravity[NML202305]
WOS关键词	MARANGONI CONVECTION ; HEAT-TRANSFER ; DRIVEN CONVECTION ; FLOW ; VISCOSITY ; MIXTURE
WOS研究方向	Chemistry ; Physics
语种	英语
WOS记录号	WOS:001076709300001
资助机构	National Natural Science Foundation of China ; opening project of CAS Key Laboratory of Microgravity
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93084]
专题	力学研究所_国家微重力实验室
通讯作者	Jiang, Yanni
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.Hohai Univ, Coll Mech & Elect Engn, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiaoming,Dai, Cheng,Jiang, Yanni,et al. Oscillation and evolution characteristics of nanofluid thermocapillary convection in rectangular cavity[J]. JOURNAL OF MOLECULAR LIQUIDS,2023,390:10.
APA	Zhou, Xiaoming,Dai, Cheng,Jiang, Yanni,&Chen, Qisheng.(2023).Oscillation and evolution characteristics of nanofluid thermocapillary convection in rectangular cavity.JOURNAL OF MOLECULAR LIQUIDS,390,10.
MLA	Zhou, Xiaoming,et al."Oscillation and evolution characteristics of nanofluid thermocapillary convection in rectangular cavity".JOURNAL OF MOLECULAR LIQUIDS 390(2023):10.