Numerical Study on Characteristics of Convection and Temperature Evolution in Microchannel of Thermal Flowmeter

doi:10.3390/mi14050935

	Numerical Study on Characteristics of Convection and Temperature Evolution in Microchannel of Thermal Flowmeter
	Che H(车航); Xu QX(徐清玄); Xu GF(徐国峰); Fu, Xinju ; Wang, Xudong ; He NF(何乃峰); Zhu ZQ(朱志强)
刊名	MICROMACHINES ; 5
	2023-04
卷号	14 页码:935
关键词	numerical simulation thermal flowmeter forced convection buoyancy convection microchannel heat source
DOI	10.3390/mi14050935
英文摘要	During practical usage, thermal flowmeters have a limited range of applications. The present work investigates the factors influencing thermal flowmeter measurements and observes the effects of buoyancy convection and forced convection on the flow rate measurement sensitivity. The results show that the gravity level, inclination angle, channel height, mass flow rate, and heating power affect the flow rate measurements by influencing the flow pattern and the temperature distribution. Gravity determines the generation of convective cells, while the inclination angle affects the location of the convective cells. Channel height affects the flow pattern and temperature distribution. Higher sensitivity can be achieved with smaller mass flow rates or higher heating power. According to the combined influence of the aforementioned parameters, the present work investigates the flow transition based on the Reynolds number and the Grashof number. When the Reynolds number is below the critical value corresponding to the Grashof number, convective cells emerge and affect the accuracy of flowmeter measurements. The research on influencing factors and flow transition presented in this paper has potential implications for the design and manufacture of thermal flowmeters under different working conditions.
分类号	Q3
WOS研究方向	WOS:000996678900001
语种	英语
资助机构	National Natural Science Foundation of China [U1738119] ; China Manned Space Program: China Space Station Two-Phase system research Rack
其他责任者	Zhu, ZQ ; Wang, XD
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92198]
专题	力学研究所_国家微重力实验室
作者单位	1.(Fu Xinju, Wang Xudong) Beijing Engn Res Ctr Efficient & Green Aerosp Prop Beijing 100190 Peoples R China 2.(Fu Xinju, Wang Xudong) Beijing Inst Control Engn Beijing 100190 Peoples R China 3.(Che Hang, Xu Qingxuan, Zhu Zhiqiang) Univ Chinese Acad Sci Beijing 100049 Peoples R China 4.(Che Hang, Xu Qingxuan, Xu Guofeng, He Naifeng, Zhu Zhiqiang) Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Che H,Xu QX,Xu GF,et al. Numerical Study on Characteristics of Convection and Temperature Evolution in Microchannel of Thermal Flowmeter[J]. MICROMACHINES, 5,2023,14:935.
APA	车航.,徐清玄.,徐国峰.,Fu, Xinju.,Wang, Xudong.,...&朱志强.(2023).Numerical Study on Characteristics of Convection and Temperature Evolution in Microchannel of Thermal Flowmeter.MICROMACHINES,14,935.
MLA	车航,et al."Numerical Study on Characteristics of Convection and Temperature Evolution in Microchannel of Thermal Flowmeter".MICROMACHINES 14(2023):935.