Abstract Numerical modeling of thermophysical processes in the air cooling channel titanium sponge reduction reactor is performed. The an area bounded by a retort filled with liquid magnesium and wall on which heating elements are mounted. Air flows inside channel, retort. A mathematical model constructed based unsteady Navier-Stokes equations axisymmetric formulation using k −ω SST turbulence ...

The study of natural convection on flat plates is great interest in the areas Engineering, both for simplicity geometry and wide variety applications. In definition a numerical model, an ideal mesh configuration one that best represents physically, with minimal influence lowest computational cost, problem addressed. two configurations (non-uniform staggered entirely uniform), at different refin...

Article history: Received 10 March 2008 Received in revised form 24 June 2008 Accepted 19 August 2008 Available online xxxx Two recent studies of observed sea surface temperature (SST) variations have provided striking evidence that their non-Gaussian statistics can be understood within the context of linear stochastically forced models in which the amplitude of the noise forcing depends linear...

The characteristics of atmospheric low-frequency variability and midlatitude SST variability as simulated by the NCAR Climate System Model are analyzed in the vicinity of the North Paciic and North Atlantic basins. The simulated spatial patterns of variability correspond quite well to those seen in observational datasets, although there are some diierences in the amplitudes of variability. Comp...

Supercritical flow through a horizontal pipe leads to non-uniform peripheral wall temperature distribution even when the heat flux is kept constant and uniform. This attributed lower transfer coefficient at top section where denser fluid tends sink. Hence, obtain uniform temperature, designed roughness devised. Uniform sand-grain employed only partly cover half of wall. Numerical simulations we...

In this paper, the k-ω SST (Shear Stress Transport) turbulence model is employed to study effect of flow rate on regular patterns pressure load distribution characteristics helico-axial pump impeller blade surface. The results show that all curves surface at different heights under rates a similar trend increasing first and decreasing then. At inlet area, with increase rate, range negative in a...

Sensitivity analysis on Sea Surface Temperature: SST estimation with Thermal Infrared Radiometer: TIR data through simulations is conducted. Also Conjugate Gradient Method: CGM based SST estimation method is proposed. SST estimation error of the proposed CGM based method is compared to the conventional Split Window Method: SWM with a variety of conditions including atmospheric models. The resul...

In this study, the effect of different blade shapes on aerodynamic performance NACA series airfoils under a wide variety working conditions at Reynolds number Re = 700,000 was explored. The SST k-ω turbulence model used for CFD method to investigate leading edge erosion airfoils. results indicated that an optimal thickness range exists considering erosion. If airfoil too thin or thick, increase...

The impacts of air-sea interactions on the representation of tropical precipitation extremes are investigated using an atmosphere-ocean-mixed-layer coupled model. The coupled model is compared to two atmosphere-only simulations driven by the coupled-model sea-surface temperatures (SSTs): one with 31 day running means (31 d), the other with a repeating mean annual cycle. This allows separation o...