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http://dx.doi.org/10.5916/jkosme.2009.33.2.272

An Experimental Study on Swirling Flow in a Sudden Expansion Tube using 3D PIV Technique  

Chang, Tae-Hyun (한국과학기술정보연구원)
Kil, Sang-Cheol (한국과학기술정보연구원 유망기술분석팀)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.2, 2009 , pp. 272-281 More about this Journal
Abstract
The effect of swirl on the flow characteristics in a sudden expansion tube was examined experimentally by using 3D PIV(particle image velocimetry) to capture the velocity profiles. The swirling flow of water through a sudden 1:2 axisymmetric expansion has previously been studied experimentally within a horizontal round tube. A kind of tangential slot is used as a swirl generator for swirling flow and a honey comb is used for without swirl flow. The work with the swirl and without swirl results are compared to each other at the same Reynolds number. Liquid crystal was employed to measure temperature profiles and heating coil used for heat transfer with and without swirl flow. And then the Nusselt number ratoes(Nu/Nudb) are calculated along the test section.
Keywords
PIV; Swirling flow; Flow sudden expansion;
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