The steady state compressible Navier-Stokes equations are solved with an explicit Runge-Kutta scheme accelerated by multigrid and an implicit preconditioner. Extensions are made to include a k-ω/SST turbulence model and chemical reactions. The implicit smoother enables the use of high CFL numbers yielding fast convergence. We present applications to turbulent solutions for flows about wings and...

In this paper, the numerical models are selected to simulate hydrothermal plume based on water temperature observation data of Longqi field in Southwest Indian Ridge (SWIR). Then, unsteady Reynolds-averaged Navier–Stokes equations solved evaluate performance Realizable k-ε (rke) model and SST k-ω (sst) simulation. By comparing calculated results with Conductivity Temperature Depth (CTD) literat...

This study reports on the numerical analysis of impact mass ratio Vortex-Induced Vibration (VIV) phenomenon an elastically rigid cylinder, oscillating freely in a crossflow direction. Reynolds-averaged Navier–Stokes (RANS) equations with (k-ω SST) model were used to analyze flow behavior, amplitude and vortex shedding patterns. The was performed at constant Reynold number (Re) = 104 reduced vel...

Abstract Numerical modeling of the outflow an air jet into water with a guillotine rupture pipeline by VOF method using k-ε and k-ω SST turbulence models was carried out. The calculations were out in axisymmetric approximation. following phases process calculated: formation large gas bubble at place rupture, its growth, separation from behind bubble. It is shown that rate detachment model highe...

Compressible gas flow inside a convergent-divergent nozzle and its exhaust plume atdifferent nozzle pressure ratios (NPR) have been numerically studied with severalturbulence models. The numerical results reveal that, the SST k–ω model give the bestresults compared with other models in time and accuracy. The effect of changes in value ofdivergence half-angle (ε ) on the nozzle performance, thru...

To indicate the best airfoil profile for different sections of a blade, five airfoils; included S8xx, FFA and AH series was studied. Among the most popular wind power blades for this application were selected, in order to find the optimum performance. Nowadays, modern wind turbines are using blades with multi airfoils at different sections. SST-K-ω model with different wind speed at large scale...