E.V.Brujatskiy, A.G.Kostin, E.I.Nikiforovich Numerical simulation of velocity and pressure fields over a single rectangular ledge, the ledge having been located on a wall of a flat linear channel |
Applied hydromechanics, Vol. 13 (85) ¹ 3, (2011) |
| The paper presents results of numerical simulation of a laminar flow over a single ledge of a rectangular cross section, the ledge having been located on a bottom wall of a flat linear channel. The computational method is based on the application of a universal discrete analogue of Navier-Stokes equations in velocity-pressure variables. A system of algebraic differential equations is solved using the iteration method for identification. Numerical results are presented for velocity and pressure fields as well as for the flow vortical structure in the ledge area. For the given ledge geometry, the Reynolds number impact is studied on the vortex structure, pressure field and a size of the circulation zone behind the obstacle. Secondary vortex formations over top and bottom walls of the channel are shown to develop in the flow for Reynolds numbers greater than 400. |
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KEY WORDS: rectangular ledge, flov, rectangular ledge, Navier-Stokes equation |
| TEXT LANGUAGE: Russian |