Experimental and Numerical Studies of the Cavity Flows at Low Reynolds Numbers
| Autor: | Diana Broboana, Corneliu Balan, Stefan-Mugur Simionescu, Nicoleta Octavia Tanase |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
0209 industrial biotechnology Reynolds number Laminar flow 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Volumetric flow rate Open-channel flow Physics::Fluid Dynamics symbols.namesake 020901 industrial engineering & automation Energy(all) Flow (mathematics) Free surface 0103 physical sciences symbols Fluid dynamics Volume of fluid method Simulation |
| Zdroj: | Energy Procedia. 112:210-216 |
| ISSN: | 1876-6102 |
| Popis: | The paper is dedicated to the experimental and numerical studies of viscous flows in cavities. The present work investigates the formation of vortical structures in two configurations: (i) the flow inside a square cavity whose lid has constant velocity(a benchmark problem in fluid dynamics), and (ii) the free surface flow over a cavity weir. The experiments are performed in an open channel, the flow rate and the fluid height upstream the body being controlled by the weir. Qualitative direct visualizations of the flow patterns are obtained in the cavity. The computations are performed in 3D flow configurations with the laminar steady and unsteady solvers implemented in Ansys Fluent. The VOF (Volume of Fluid) method is used for the free surface geometry calculation and the interface between two fluids. The numerical solutions give precise descriptions of the experimental free surface line and the vortical structures and offer an evaluation of the mixing process inside cavity. |
| Databáze: | OpenAIRE |
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