2015
DOI: 10.1016/j.ijheatfluidflow.2015.07.015
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Influence of rotation on the flow over a cylinder at Re = 5000

Abstract: The turbulent flow around a rotating cylinder submerged in a uniform flow is simulated using direct numerical simulations (DNS) using a Reynolds number based on cylinder diameter D and free stream velocity U ∞ of Re = 5000. The rotation relation is in the range 0 ≤ α ≤ 5.Rotation brings upon a fundamental change of the pressure distribution, the stagnation point shifts downward with increasing α, falling outside the cylinder for rotation rates α > 4. The Magnus effect is observed: as α increases a lift force a… Show more

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Cited by 35 publications
(19 citation statements)
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“…In fact, the stream-wise fluctuation profile follows the same trend to that obtained by Prasad and Williamson [31] for . More results are presented in Aljure et al [1]. Fig.…”
Section: Mesh Sensitivity Studymentioning
confidence: 81%
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“…In fact, the stream-wise fluctuation profile follows the same trend to that obtained by Prasad and Williamson [31] for . More results are presented in Aljure et al [1]. Fig.…”
Section: Mesh Sensitivity Studymentioning
confidence: 81%
“…A second-order conservative scheme [45] for the continuous differential operators, an explicit second order self-adaptive scheme for the temporal discretization, a back-ward Euler scheme for the pressure gradient and a fractional step algorithm for the velocity-pressure coupling are used. A more in depth presentation of the numerical schemes used can be found in Aljure et al [1], Jofre et al [11], Trias et al [41]. As the meshes are constructed using a constant-step extrusion in the span wise direction of a 2D unstructured grid, the Poisson equation can be solved by means of a direct Schur-Fourier decomposition solver [3].…”
Section: Governing Equations and Numerical Methodsmentioning
confidence: 99%
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“…The Poisson equation resulting from the enforcement of the mass conservation is solved using a conjugate gradient solver. The present numerical code and discretization approach has shown high accuracy in different cases involving flows with massive separations (Rodríguez et al, 2011;Lehmkuhl et al, 2013;Rodríguez et al, 2013;Lehmkuhl et al, 2014;Aljure et al, 2014bAljure et al, , 2015. Further information regarding the numerical method can be found in Jofre et al 2014 Computational time inverted for each simulation is proportional to the number of time-steps solved and their individual cost.…”
Section: Methodsmentioning
confidence: 89%