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Numerical Analysis of Flow past Circular Cylinder with Triangular and Rectangular Wake Splitter
Authors: Pavan Badami, Vivek Shrivastava, Saravanan V., Nandeesh Hiremath, K. N. Seetharamu
Abstract:
In the present work flow past circular cylinder and cylinder with rectangular and triangular wake splitter is studied to improve aerodynamic parameters. The Comparison of drag coefficient is tabulated for bare cylinder, cylinder with rectangular and triangular wake splitters. Flow past circular cylinder and cylinder with triangular and rectangular wake splitter is performed at Reynoldsnumber 5, 20, 40, 50,80, 100.An incompressible PISO finite volume code employing a non-staggered grid arrangement is used, a second order upwind scheme is used for convective terms. The time discretization is implicit and a Second order Crank-Nicholson scheme is employed. Length of wake splitter in both configurations is taken to be equal to diameter of cylinder. Wake length is found to be less with rectangular wake splitter when compared to bare cylinder and cylinder with triangular wake splitter. Coefficient of drag is found to be less for triangular wake splitter when compared to bare cylinder & cylinder with rectangular wake splitter.Keywords: Coefficient of drag and pressure, CFDFLUENT, Triangular and rectangular wake splitter, wake length.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1327829
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[1] B.S,V,P.Patnaik ,K.N.Seetharamu,P.AaswathaNarayana simulation of laminar confined flow past ,a circular cylinder with integral wake splitter involving heat transfer.Int.J.Numer.Method Heat flow Fluid Flow 6 (1996)
[2] S.C.R. Dennis, G. Chang, Numerical solutions for steady flow past a circular cylinder at Reynolds numbers up to 100, J. FluidMech. 42 (1970) 471.
[3] D. Sucker, H. Brauer, Fluiddynamikbei der angestromtenZilindern, WÔé¼armeStoffubertragung 8 (1975) 149.
[4] V.Saravanan1, C.K.Umesh1, B.K.Muralidhara1, K.N.Seetharamu2national conference on approaching scholastic horizon in mechanics April 2010
[5] A.L.F. Lima E Silva a, A. Silveira-Neto a,*, J.J.R. Damasceno b Numerical simulation of two-dimensional flows over acircular cylinder using the immersed boundary method. Int. Computational physics189 (2003) 351-370 .
[6] D. Goldstein, R. Hadler, L. Sirovich, Direct numerical simulation of turbulent flow over a modelled riblet covered surface,J. Comp. Phys. 302 (1995) 333.
[7] S Tiwari,DChakraborty ,G Biswas,PkPanigrah ,Numerical prediction of flow and heat transfer in a channel in presence of a built in circular tube with and without wake splitter international journal of heat and mass transfer 48(2005) 439-453
[8] M.C. Lai, C.S. Peskin, An immersed boundary method with formal second-order accuracy and reduced numerical viscosity,J. Comp. Phys. 160 (2000) 705.
[9] Panchal ,Lakdawala , " Numerical investigation of thermal performance in cross flow around square array of circular cylinder"NUiCONE-2011