Abstract
Direct numerical simulation of the weakly turbulent flow of non-Newtonian fluids with shear-thinning rheology are undertaken. Results agree reasonably well with the experimentally determined logarithmic layer correlation presented by Clapp (1961) and with other previously published experimental work. As the power law index becomes smaller for the same Reynolds number, the flow deviates further from the Newtonian profile and the results suggest that transition is delayed. Use of this technique shows promise in understanding transition and turbulence in non-Newtonian fluids.
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