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Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow

Kumar, A and Ray, RK and Mittal, HVR (2022) Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow. In: Journal of Heat Transfer, 144 (7).

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Official URL: https://doi.org/10.1115/1.4054350


This study investigates the unsteady, two-dimensional flow and heat transfer past a rotationally oscillating circular cylinder in linear shear flow. A higher order compact (HOC) finite difference scheme is used to solve the governing Navier–Stokes equations coupled with the energy equation on a nonuniform grid in polar coordinates. The hydrodynamic and thermal features of the flow are mainly influenced by the shear rate (K), Reynolds number (Re), Prandtl number (Pr), and the cylinder oscillation parameters, i.e., oscillation amplitude (αm), the frequency ratio (fr). The simulations are performed for Re = 100; Pr = 0:5 - 1:0; 0:0 ≤ K ≤ 0:15, and 0:5 ≤ αm ≤ 2:0. The numerical scheme is validated with the existing literature studies. Partial and full vortex suppression is observed for certain values of shear parameter K. The connection between heat transfer and vortex shedding phenomenon is examined where a pronounced increase in the heat transfer is observed for certain values of oscillation parameter, relative to the nonshear flow case.

Item Type: Journal Article
Publication: Journal of Heat Transfer
Publisher: American Society of Mechanical Engineers (ASME)
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Circular cylinders; Finite difference method; Navier Stokes equations; Oscillating cylinders; Oscillating flow; Prandtl number; Reynolds number; Vortex flow, Energy equation; Finite difference; Flow and heat transfer; High-order compact finite difference schemes; Linear shear flow; Navier-Stokes equation; Non-uniform grids; Oscillation parameters; Rotational oscillation; Two-dimensional flow, Shear flow
Department/Centre: Division of Interdisciplinary Sciences > Computational and Data Sciences
Date Deposited: 01 Feb 2023 04:58
Last Modified: 01 Feb 2023 04:58
URI: https://eprints.iisc.ac.in/id/eprint/79638

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