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Convective heat transfer and laminar flow characteristics of flow over a circular cylinder in presence of control plates
Fluid Dynamics Research ( IF 1.5 ) Pub Date : 2020-07-08 , DOI: 10.1088/1873-7005/ab9b6e
Hemanth A V S S 1 , Malaikannan G 2 , Deepakkumar R 3
Affiliation  

The location and orientation effect of control plates (CP) in and around the flow separation region of a circular cylinder has been numerically investigated in the laminar flow regime at Reynolds number 100. The vortex shedding and convective heat transfer characteristics have been analysed for both upstream and downstream locations of the control plates using Ansys Fluent 18.0. The drag and lift coefficient ( C D , C L ), the dimensionless vortex shedding frequency (Sr) and dimensionless convective heat transfer coefficient (Nu) are reported for various CP orientation and locations. The CP positioned along the main flow direction and located near the cylinder induce more shear on the cylinder surface, stabilities the wake vortices. In addition to shear generation, the CP orientation interacts effectively with the cylinder wake. The vortex shedding suppression with reduced drag on the cylinder is identified at many locations of ...

中文翻译:

存在控制板的情况下绕圆柱体的对流换热和层流特性

在层流状态下以雷诺数为100的数值研究了控制板(CP)在圆柱体的流动分离区域中及其周围的位置和取向效应。已经对上游的涡流脱落和对流传热特性进行了分析。使用Ansys Fluent 18.0在控制板的下游位置。报告了各种CP方向和位置的阻力系数和阻力系数(CD,CL),无因次涡旋脱落频率(Sr)和无因次对流传热系数(Nu)。沿主流方向定位并位于圆柱附近的CP会在圆柱表面上产生更多的剪切力,从而使尾流涡流稳定。除了产生剪切力外,CP方向还与圆柱尾流有效相互作用。
更新日期:2020-07-09
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