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COMPARATIVE STUDY OF FLUID FLOW AND HEAT TRANSFER IN RECTANGULAR AND WAVY MICROCHANNEL

卷 9, 册 6, 2017, pp. 549-565
DOI: 10.1615/ComputThermalScien.2017019601
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摘要

A comparative study of steady, laminar, single-phase flow of nanofluid through a rectangular microchannel and wavy microchannel heat exchanger of equal dimensions has been carried out. The effect on three important variables (i.e., heat transfer coefficient, pumping power, and friction factor) have been analyzed by considering the effect of four parameters (i.e., effect of flow rate, effect of nanofluid concentration, effect of amplitude of wavy surface, and effect of wave length of wavy surfaces). Numerical simulation has been validated with the experimental work of Lee and Mudawar (Lee, J. and Mudawar, I., Assessment of the effectiveness of nanofluids for single and multiphase heat transfer in micro channel, Int. J. Heat Mass Transfer, vol. 50, pp. 452–463, 2007). It is concluded that, with an increase in the amplitude of a wavy surface, the heat transfer coefficient increases. Results show that the wavy channel performed better than the plane rectangular microchannel in terms of the rise in heat transfer coefficient but is costly due to the pump power requirement.

对本文的引用
  1. Dewangan Satish Kumar, Effect of spherical internal surface irregularities (SISIs) on thermohydraulic features of modified SSWH riser tube flow, International Journal of Energy and Environmental Engineering, 13, 1, 2022. Crossref

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