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Report No.

Experimental study on thermal mixing related to eddy structure in T-junction

Tanaka, Masaaki; Kurokawa, Koji*; Takita, Hiroki*; Monji, Hideaki*

In this study, a simplified T-junction piping system consisting of a rectangular duct for main stream and a circular pipe for branch stream was used as the test section in the water experiment. Time series of instantaneous two-dimensional velocity fields were obtained by PIV (Particle Image Velocimetry) in the mixing area. And fluid temperature fluctuations at several positions at 2 mm inside from the wall were also measured by thermo-couples. Focusing on the frequency characteristics, formation of eddy structure in the mixing area and mutual relation between the temperature fluctuation generation and the flow structure were discussed.



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