Nam ate 1980 vinnig kom , pas dit onderwysverpleegsters om die toekomstige behoeftes van en uitdagings aan verpleging van nader te bekyk. Verpleegonderwys moet op ’n breé basis berus en mense oplei om te dink, handel en voortdurend daarna te streef om hulle kennis uit te brei. Dit moet NIE uitsluitlik daarop gemik wees om mense vir eksamens voor te berei nie, inaar dit moet ook nie die teorie e...

In this paper we are going to study the gas evolution dynamics of the exact and approximate Riemann solvers, e.g., the Flux Vector Splitting (FVS) and the Flux Difference Splitting (FDS) schemes. Since the FVS scheme and the Kinetic Flux Vector Splitting (KFVS) scheme have the same physical mechanism and similar flux function, based on the analysis of the discretized KFVS scheme the weakness an...

An approximate Riemann solver for the equations of ideal relativistic magnetohydrodynamics is presented. The solver belongs to the so-called Harten-Laxvan Leer (HLL, [1]) family of solvers where an initial guess to the characteristic wave speeds is given without any knowledge a priori of the solution. Our proposed method of solution generalizes to the relativistic case the classical five-wave H...

An unsteady two-dimensional finite-volume solver was developed based on Van Leer’s flux splitting algorithm in conjunction with “Monotonic Upstream Scheme for Conservation Laws (MUSCL)” limiters and the two-layer Baldwin-Lomax turbulence model was also implemented. To validate the solver, two test cases were prepared and the computed results had good agreements with reference data. The rotating...

We propose an all regime Lagrange-Projection like numerical scheme for the gas dynamics equations. By all regime, we mean that the numerical scheme is able to compute accurate approximate solutions with an under-resolved discretization, i.e. a mesh size and time step much bigger than the Mach number M . The key idea is to decouple acoustic and transport phenomenon and then alter the numerical f...

Abstract The Saint-Venant equations are numerically solved to simulate free surface flows in one dimension. A Riemann solver is needed compute the numerical flux for capturing shocks and flow discontinuities occurring situations such as hydraulic jump, dam-break wave propagation, or bore propagation. that captures not yet reported be implemented within framework of a meshless method solving equ...

The air-injection as an active flow stabilizing techniques, were numerically examined in current work, during the aerodynamic behavior and the characteristics of an axial compressor. At first, in design condition the characteristic curve was numerically captured for a specified test compressor. The computed results showed good agreements with those obtained from the experiments, to validate the...