NDLI: Test of Cross-Section Shape of Air-Liquid Interface in Microgrooves With Micro-PIV Method

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Nie, Xuelei Hu, Xuegong Wang, Tao Tang, Dawei
Copyright Year	2011
Abstract	Evaporation of liquid meniscus formed in microgrooves is associated with very high heat transfer rates, but the cross-section shape of air-liquid interface has a great influence to the heat transfer in microgrooves. But the real cross-section shape of interface in microgrooves is still unknown for us. In this work, the micro-PIV (Particle Image Velocimetry) method is used to test the cross-section shape of air-liquid interface in microgrooves. In the experiment, the camera is focus on different planes from top of the microgrooves to the bottom of the microgrooves. In each plane, we can see the boundary between the air and liquid through small particles added into the liquid. The positions of boundary in each plane for a given cross section are drawn in two-dimension coordinate. Then the cross-section shape of interface in microgrooves can be seen from the fitting curve. The results show that the cross-section shapes of the interface in microgrooves are not round, but polynomial curves. The curvature of interface in microgrooves changes along a single curve. Besides, the polynomial curves also vary along axial direction of the microgrooves. The variations are more obvious in vertical microgrooves than in horizontal microgrooves.
Sponsorship	Heat Transfer Division
Starting Page	619
Ending Page	625
Page Count	7
File Format	PDF
ISBN	9780791844632
DOI	10.1115/ICNMM2011-58219
Volume Number	ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1
Conference Proceedings	ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels
Language	English
Publisher Date	2011-06-19
Publisher Place	Edmonton, Alberta, Canada
Access Restriction	Subscribed
Subject Keyword	Fittings Particulate matter Dimensions Polynomials Shapes Evaporation Heat transfer
Content Type	Text
Resource Type	Article

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