Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
Permanent link to this recordhttp://hdl.handle.net/10754/676283
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AbstractThis study investigates the unsteady, two-dimensional flow and heat transfer past a sinusoidally rotating circular cylinder, subject to linear shear. A higher order compact (HOC) finite difference scheme is used to solve the governing Navier-Stokes equations coupled with the energy equation on a non-uniform 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 (P r) and the cylinder oscillation parameters i.e. maximum angular velocity (am), the frequency ratio (fr). The simulations are performed for Re = 100, P r = 0.5 - 1.0, K ? [0.0, 0.15] and am ? [0.5, 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 non-shear flow case.
CitationKumar, A., Ray, R. K., & Mittal, H. (2022). Heat Transfer Past a Rotationally Oscillating Circular Cylinder in Linear Shear Flow. Journal of Heat Transfer. https://doi.org/10.1115/1.4054350
SponsorsThe first author would like to acknowledge and express his gratitude to the University Grant Commission, New Delhi, India for providing the financial support in form of D.S. Kothari post-doctoral fellowship (No.F.4- 2/2006 (BSR)/MA/18-19/0095)
JournalJournal of Heat Transfer