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Articles by Seyed Esmail Razavi
Total Records ( 2 ) for Seyed Esmail Razavi
  Seyed Esmail Razavi , Vahid Farhangmehr and Farzad Barar
  In the current investigation, the effect of a splitter plate length on flow induced forces and heat transfer behavior of circular cylinder at low Reynolds numbers (20<=Re<=1000) was studied using a finite volume methodology on triangular unstructured grid. A significant reduction in the drag coefficient as well as the average Nusselt number was observed in the presence of splitter plate implying stabilization of the wake region and accordingly reduction of the vortex shedding. However, the conductive heat transfer was increased as a result of the extra heat transfer area generated by splitter plate, upon which the overall heat transfer of the system was improved.
  Seyed Esmail Razavi , Farzad Barar and Vahid Farhangmehr
  In the current investigation, a Characteristics-Based (CB) finite-volume solution was developed to improve the convergence rate and the solution stability of the numerical simulation of incompressible viscous flows. The Artificial Compressibility Method (ACM) as a pre-conditioner was taken into account in our study. A fifth-order Runge-Kutta scheme has been used for marching in time. Local time stepping and implicit residual smoothing were applied as convergence acceleration techniques. The convective fluxes have been calculated by a Roe-like high-order flux splitting scheme. The viscous and thermal conduction terms were found by a second-order technique. This method admitted high Courant-Friedrichs-Levy (CFL) numbers and revealed a good convergence rate and accuracy within a wide range of Rayleigh numbers from 1 to 10000 for natural convection flow around a horizontal circular cylinder which is chosen as a case study. The obtained results were compared with available benchmark data in literature and showed a high consensus with them.
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