A Characteristic-Based Finite-Volume Solution of a Horizontal Cylinder in Cross Flow with Heat Transfer

In the current investigation, a characteristics-based (CB) finite-volume solution was developed to improve theconvergence rate and the solution stability for thenumerical simulation of incompressible viscous flows.The artificial compressibility method (ACM) which couples the continuity and momentum equations as apre-conditioner was taken into account in our study. Afifth-order Runge-Kutta scheme has been used formarching in time. The local time stepping and implicitresidual smoothing were applied as the convergence acceleration techniques. The convective fluxes havebeen calculated by a Roe-like high-order flux splittingscheme. The viscous and thermal conduction terms werefound by an ordinary second-order technique. Thismethod admitted high Courant-Friedrichs-Levy (CFL)numbers and revealed a good convergence rate andaccuracy to conquer the wakes within applied range ofReynolds numbers for cross flow around a horizontalcircular cylinder with heat transfer as a case studychosen in this investigation. The obtained results werecompared with available benchmark data in literatureand showed a high consensus with them.

کلیدواژه ها:

incompressible flows ، cross flow ، artificialcompressibility method (ACM) ، characteristics-based (CB) method ، Runge-Kutta scheme