Koumoutsakos, Petros and Leonard, A. (1995) High-resolution simulations of the flow around an impulsively started cylinder using vortex methods. Journal of Fluid Mechanics, 296 . pp. 1-38. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:20120217-081614132
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The development of a two-dimensional viscous incompressible flow generated from a circular cylinder impulsively started into rectilinear motion is studied computationally. An adaptative numerical scheme, based on vortex methods, is used to integrate the vorticity/velocity formulation of the Navier–Stokes equations for a wide range of Reynolds numbers (Re = 40 to 9500). A novel technique is implemented to resolve diffusion effects and enforce the no-slip boundary condition. The Biot–Savart law is employed to compute the velocities, thus eliminating the need for imposing the far-field boundary conditions. An efficient fast summation algorithm was implemented that allows a large number of computational elements, thus producing unprecedented high-resolution simulations. Results are compared to those from other theoretical, experimental and computational works and the relation between the unsteady vorticity field and the forces experienced by the body is discussed.
|Additional Information:||© 1995 Cambridge University Press. Received 28 March 1994 and in revised form 10 January 1995. Published online: 26 April 2006. We would like to acknowledge the invaluable help of Mr Doug Shiels of Caltech throughout this work. We are pleased to acknowledge the support of this research by the Office of Naval Research through Grant Nos. N00014-92-5-1072 and N00014-92-J-1189. One of us (P. K.) was an NSF postdoctoral fellow in parallel computing (Grant No. ASC-92-11071). Computer time was provided by Caltech’s Jet Propulsion Laboratory Supercomputing Project.|
|Official Citation:||High-resolution simulations of the flow around an impulsively started cylinder using vortex methods P.Koumoutsakos and A. Leonard Journal of Fluid Mechanics / Volume 296 / pp 1 - 38 1995 Cambridge University Press Published online: 26 April 2006 DOI:10.1017/S0022112095002059|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||17 Feb 2012 16:56|
|Last Modified:||20 Sep 2016 20:54|
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