The present work introduces a modified scheme for the solution of compressible 2-D full Navier-Stokes equations, using Flux Vector Splitting method. As a result of this modification, numerical diffusion is reduced. The computer code which is developed based on this algorithm can be used easily and accurately to analyze complex flow fields with discontinuity in properties, in cases such as shock...

The present work introduces a modified scheme for the solution of compressible 2-D full Navier-Stokes equations, using Flux Vector Splitting method. As a result of this modification, numerical diffusion is reduced. The computer code which is developed based on this algorithm can be used easily and accurately to analyze complex flow fields with discontinuity in properties, in cases such as shock...

Aeraulic, air movement, and wind effects studies are of high importance when assessing building performances. Indeed, several have been conducted using tunnels to better understand aerodynamics inside around buildings. The objective this study is accurately characterize the velocity field test chamber a tunnel at different locations Hot-Wire-Anemometry technique propose an experimental protocol...

In various water transmission systems such as long-distance transfer projects and hydropower stations, accurate simulation of hammer is extremely important for safe stable operation the realization intelligent operations. Previous calculations usually consider only steady-state friction, underestimating decay transient pressure. A second-order Finite Volume Method (FVM) considering effect unste...

Abstract A quasi–second-order scheme is developed to obtain approximate solutions of the two-dimensional shallow water equations (SWEs) with bathymetry. The based on a staggered finite volume space discretization: scalar unknowns are located in discretization cells while vector edges mesh. monotonic upwind-central for conservation laws (MUSCL)-like interpolation discrete convection operators he...

When utilizing a finite volume method to predict outburst flood evolution in real geometry, the processing of wet-dry front and dry cells is an important step. In this paper, we propose new approach process cells, including four steps: (1) estimating intercell properties; (2) modifying interface elevation; (3) calculating cell elevations by averaging elevations; (4) changing value first term sl...

In this research, a CFD solver is developed for solving the 2D/3D compressible flow problem: finite volume method based on multi-block structural grids used to solve Reynolds averaged Navier–Stokes equations (RANS). Included in methodology are multiple high-order reconstruction schemes, such as 3rd-order MUSCL (Monotone Upstreamcentered Schemes Conservation Laws), 5th-order WENO (Weight Essenti...

A general approach to study and enhance the slope limiter functions on non-uniform grids is presented. Slope limiters are preferred in high-resolutions schemes in general and MUSCL in particular to solve hyperbolic conservation laws. However, most 1D limiters are developed assuming uniform meshes in space, which are shown to be inadequate on non-uniform grids. Especially, secondorder convergenc...

The central scheme of Nessyahu and Tadmor [J. Comput. Phys., 87 (1990), pp. 408–463] solves hyperbolic conservation laws on a staggered mesh and avoids solving Riemann problems across cell boundaries. To overcome the difficulty of excessive numerical dissipation for small time steps, the recent work of Kurganov and Tadmor [J. Comput. Phys., 160 (2000), pp. 241–282] employs a variable control vo...