توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱3D Simulation of Turbulent Dividing Flow: A Model Comparision
اطلاعات انتشار: اولین کنفرانس بین المللی و سومین کنفرانس ملی سد و نیروگاههای برق آبی، سال
تعداد صفحات: ۸
The flow at a channel bifurcation is turbulent, highly three–dimensional (3D) and has many complex features. This necessitates a deeper insight into the flow patterns, sediment transport and local scouring phenomenon near the solid boundaries. This paper reports a 3D numerical investigation of these features in an open channel. Simulations have been done on rectangular channel geometry, with smooth bed and sidewalls. The standard k–e, k–w model of Wilcox, and RSM turbulence models are compared using the commercial code FLUENT. The simulation results have been compared with available experimental data. It was found that all of the turbulence models tested here accurately predicted velocity profiles in the main channel but in the branch channel, the RSM model performs best with the k–w model performing better the k–e model<\div>

۲simulation of the topographically induced separated shallow flow using 3D–RANS models
نویسنده(ها):
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۸
In this paper we evaluate the performance of reynolds averaged navier stokes RANS simulations to predict the flow structure developed by the presence of a sidewal obstruction in a uniform open –channel shallow flow the study of these flow structures is important because they are present in several real world configurations such as grounes in rivers where the erosion processes mass transport and the influence of the flow hydrodynamics in ecological processes are still not well understood . results of the numerical simulations have been compared with experimental laboratory measurements based on surface particla image velocimtry SPIV.<\div>
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