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Thermal mixing of two miscible fluids in a T-shaped microchannel.

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Thermal mixing of two miscible fluids in a T-shaped microchannel.

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Title: Thermal mixing of two miscible fluids in a T-shaped microchannel.
Author: Xu, Bin.; Wong, Teck Neng.; Nguyen, Nam-Trung.; Che, Zhizhao.; Chai, John Chee Kiong.
Copyright year: 2010
Abstract: In this paper, thermal mixing characteristics of two miscible fluids in a T-shaped microchannel are investigated theoretically, experimentally, and numerically. Thermal mixing processes in a T-shaped microchannel are divided into two zones, consisting of a T-junction and a mixing channel. An analytical two-dimensional model was first built to describe the heat transfer processes in the mixing channel. In the experiments, de-ionized water was employed as the working fluid. Laser induced fluorescence method was used to measure the fluid temperature field in the microchannel. Different combinations of flow rate ratios were studied to investigate the thermal mixing characteristics in the microchannel. At the T-junction, thermal diffusion is found to be dominant in this area due to the striation in the temperature contours. In the mixing channel, heat transfer processes are found to be controlled by thermal diffusion and convection. Measured temperature profiles at the T-junction and mixing channel are compared with analytical model and numerical simulation, respectively.
Subject: DRNTU::Engineering::Mechanical engineering.
Type: Journal Article
Series/ Journal Title: Biomicrofluidics
School: School of Mechanical and Aerospace Engineering
Rights: © 2010 American Institute of Physics. This paper was published in Biomicrofluidics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics . The paper can be found at DOI: [http://dx.doi.org/10.1063/1.3496359].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Version: Published version

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