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Flow control in a cavity with tiny-obstacles on the walls for mixing enhancement part I: Flow physics
, Article Journal of Applied Fluid Mechanics ; Volume 12, Issue 1 , 2019 , Pages 11-23 ; 17353572 (ISSN) ; Javadi, K ; Taeibi Rahni, M ; Sharif University of Technology
Isfahan University of Technology
2019
Abstract
This paper seeks to make a study on flow control in two-dimensional square cavities having obstacles on their walls. The goal of using these passive controllers is to enhance mixing in an enclosed space. Lattice Boltzmann method is used to simulate the problem. Results are presented for various Reynolds numbers, 400≤Re≤4000 and different arrangements of tiny-obstacles with different heights. To give a perspective on the physics of this problem, time evolution of the flow is studied at Re= 1000. Then, the flow structure is studied for different Reynolds numbers. Findings show that the interaction of the main vortex with the tiny-obstacles inserted on the wall cavity changes the flow pattern...
Flow control in a cavity with tiny-obstacles on the walls for mixing enhancement part I: Flow physics
, Article Journal of Applied Fluid Mechanics ; Volume 12, Issue 1 , 2019 , Pages 11-23 ; 17353572 (ISSN) ; Javadi, K ; Taeibi Rahni, M ; Sharif University of Technology
Isfahan University of Technology
2019
Abstract
This paper seeks to make a study on flow control in two-dimensional square cavities having obstacles on their walls. The goal of using these passive controllers is to enhance mixing in an enclosed space. Lattice Boltzmann method is used to simulate the problem. Results are presented for various Reynolds numbers, 400≤Re≤4000 and different arrangements of tiny-obstacles with different heights. To give a perspective on the physics of this problem, time evolution of the flow is studied at Re= 1000. Then, the flow structure is studied for different Reynolds numbers. Findings show that the interaction of the main vortex with the tiny-obstacles inserted on the wall cavity changes the flow pattern...