On two- and three-dimensional expansion flows

Abstract This paper gives consideration to incompressible Newtonian flows through two- and three-dimensional expansions. Through a time-stepping scheme, steady-state solutions are sought for both small and large expansion ratios. The flow structure in the two-dimensional case can be significantly different from that of the three-dimensional equivalent, depending on the expansion ratio. Both lip and salient corner vortices are reported, and comparisons are made against available experimental data.

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