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EXTENSION OF THE CHT-01 NATURAL CONVECTION BENCHMARK PROBLEM TO NON-NEWTONIAN FLUIDS

William Barth
The University of Texas at Austin

Graham Carey
University of Texas at Austin

Abstract

In this work, computational results are compared to experimental benchmark results for natural convection in a cubical cavity, and these results are extended to two classes of non-Newtonian fluids: Powell-Eyring and extended Williamson. Good agreement is seen between the experimental and computational results for most of the Newtonian cases. The non-Newtonian results show increased heat flux with increasing non-linearity of the models. The non-Newtonian cases for the diagonally inclined orientation also show periodic behavior not seen in the Newtonian cases.

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