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Prediction of fluid flow and acoustic field of a supersonic jet using vorticity confinement
, Article Journal of the Acoustical Society of America ; Volume 144, Issue 3 , 2018 , Pages 1521-1527 ; 00014966 (ISSN) ; Hejranfar, K ; Ebrahimi, M ; Sharif University of Technology
Acoustical Society of America
2018
Abstract
In this study, the numerical simulation of the fluid flow and acoustic field of a supersonic jet is performed by using high-order discretization and the vorticity confinement (VC) method on coarse grids. The three-dimensional Navier-Stokes equations are considered in the generalized curvilinear coordinate system and the high-order compact finite-difference scheme is applied for the space discretization, and the time integration is performed by the fourth-order Runge-Kutta scheme. A low-pass high-order filter is applied to stabilize the numerical solution. The non-reflecting boundary conditions are adopted for all the free boundaries, and the Kirchhoff surface integration is utilized to...