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- W311330552 abstract "This paper describes a novel two-dimensional discrete vortex model for simulating low Reynolds number eddy formation downstream of abrupt changes in flow geometry. The numerical model employs a viscous-splitting technique to solve the vorticity transport equation governing the evolution of vorticity. During the advective stage of the computation, a semi-Lagrangian scheme is used to update the vortex positions, whilst an analytical diffusion algorithm employing Oseen vortices is implemented during the diffusive time step. Redistributing the vorticity analytically instead of using the more traditional random-walk method enables the model to simulate steady flows directly and avoids the need to filter the numerical results to remove the oscillations created by the random-walk procedure. Predictions from the model are compared against experimental data and alternative numerical results for laminar flow past a confined backward-facing step. The results demonstrate that the analytical vortex diffusion scheme provides an effective alternative to random-walk procedures." @default.
- W311330552 created "2016-06-24" @default.
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- W311330552 date "2002-01-01" @default.
- W311330552 modified "2023-09-26" @default.
- W311330552 title "A NUMERICAL STUDY OF LAMINAR FLOW OVER A CONFINED BACKWARD- FACING STEP USING A NOVEL VISCOUS-SPLITTING VORTEX ALGORITHM" @default.
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