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Dependence of the number of reversed flows on the weighting factor kτ for shear stress in the optimization. A general trend towards reduction in number of reversed flows was found as kτ was sequentially increased. However, this trend was reversed at large values of kτ in two networks. The vertical dashed line corresponds to kτ = 0.4096, the value used in the subsequent application of the method. A. Network I. B. Network II. C. Network III. D. Network IV.
