Direct Numerical Simulation of Three-Dimensional Flow and Augmented Heat Transfer in a Grooved Channel
Authors:
- 1 August 1998
- journal article
- Published by Wiley in Journal of Heat Transfer
- Vol. 120 (3) , 717-723
Abstract
Direct numerical simulations of three-dimensional flow and augmented convective heat transfer in a transversely grooved channel are presented for the Reynolds number range 140 < Re < 2000. These calculations employ the spectral element technique. Multiple flow transitions are documented as the Reynolds number increases, from steady two-dimensional flow through broad-banded unsteady three-dimensional mixing. Three-dimensional simulations correctly predict the Reynolds-number-independent friction factor behavior of this flow and quantify its heat transfer to within 16 percent of measured values. Two-dimensional simulations, however, incorrectly predict laminar-like friction factor and heat transfer behaviors.Keywords
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