|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4992231||1368132||2018||5 صفحه PDF||ندارد||دانلود رایگان|
â¢Turbulent far-wake flow downstream of a cylinder is analyzed by a generalized similarity method.â¢This method is then applied to the problem of an array of cylinders.â¢Both the turbulent and laminar far-wake flow cases are analyzed for the latter problem.
The nonlinear momentum equation for turbulent far-wake flow downstream of a cylinder is derived from the Reynolds averaged NavierâStokes equations and solved by iteration and generalized similarity solution. The first-order Oseen-type linearization yields for the wake boundary layer width a series, whose terms vary as x 1â2, xâ1â2, xâ3â2 etc., where x is the streamwise distance from the center of cylinder. The velocity deficit from the free-stream velocity is similarly obtained as a series and the iteration is carried over to a second-order. This method is then applied to the problem of an array of cylinders. Both turbulent and laminar far-wake flow cases are analyzed. The series solutions broadly extend the earlier findings. The first-order solutions agree in form with those stated in the book of Schlichting (1979).
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Journal: European Journal of Mechanics - B/Fluids - Volume 67, JanuaryâFebruary 2018, Pages 65-69