The Finite Element with Near-Wall Deformation Mesh Method in the Prediction of Flow Past a Rotating Isolated Cylinder at High Reynolds Number
Keywords:
Finite Element Method of Fluid Dynamic, Rotating Grooved and Cylinder with End Discs, Turbulent ModelAbstract
The computational study has presented the 3D convective turbulent flow past a rotating isolated cylinder at a Reynolds number of 100,000, for spin ratios growing up to 2. The rotating cylinders have plain and grooved surfaces, moreover, the combination with end discs has been purposed in the investigation. The high Re k-e turbulent approach, including the linear approximated form of the viscosity equation, in which the Reynolds stresses correspond to mean strain tensors, to determine the different turbulent scales separating from the free flow. Also, the standard “log-law” near-wall function has been suggested for the strategies of resource effectiveness to capture the fully turbulent region of the inner boundary layer. The finite element method has been provided to discretize unknown fluxes along with the computational domain. The deformation mesh has facilitated the interactive flow with the arc grooves and balanced the continuity flow in each computational element closing to the rotating walls. These predictions have been validated with available experimental work to strengthen the competence of the turbulent approach. Also, the prediction has expanded to the higher spin ratios from those earlier data, the trend is beneficial for further implementation and design work. These findings have clearly indicated that the cylinder surfaces and combination parts have significantly influenced the aerodynamic force and turbulent behavior with the spin ratios due to the distribution pattern of the boundary layer and flow domain, which has been the most considerable discrepancy in each of these tests.
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