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EXPERIMENTAL INVESTIGATION OF FLOW REGIMES AND MIXING PROCESSES IN A T-SHAPED MICROMIXER BY MEANS OF MICRO-PIV AND MICRO-LIF METHODS
Bilskiy A.V., Yagodnitsyna A.A.
Institute of Thermophysics SB RAS, Novosibirsk, Russia
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Citation:
Bilskiy, A.V. and Yagodnitsyna, A.A., (2011) Experimental investigation of flow regimes and mixing processes in a T-shaped micromixer by means of micro-PIV and micro-LIF methods, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(7), PP. 167 - 171.
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Keywords:microflows; microhydrodynamics; micromixers |
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Abstracts:
In the present work flow regimes and mixing processes in a T-shaped micromixer with rectangular cross section channels were investigated. Using micro-PIV and micro-LIF experimental methods velocity and concentration fields were measured in the range of Reynolds numbers from 10 to 300. It was shown that at critical Reynolds number (Re = 150) flow regime changes from the Dean vortex flow to the engulfment flow. Obtained during the experiment critical Reynolds number coincides with CFD results by other authors. Concentration field analysis shows a drastic increase of mixing efficiency when “engulfment” flow regime occurs. |
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References:
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