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Numerical simulation [3] was conducted with the ProCAST TM software from ESI.
Physical properties of AA5052 used in the simulation.
Mathematical Simulation Tool - Part III - New Simulation Package Results The previous model was imported in the new platform, allowing much smaller computation time and giving us the opportunity to verify the influence of turbulence.
The CFD model solves differential equations describing the conservation of mass, momentum and energy in order to evaluate the velocity, pressure and temperature fields.
Simulations were carried out for steady state conditions and an inlet velocity of 240mm/s.

This paper presents the analysis of the effect of smoke exhaust and hot gases from an atrium type building using techniques for numerical simulation of a fire situation.
This approach, specific to two-zone fire models instead of CFD models, can provide a quick overview for fire protection engineers.

The numerical procedures employed in the simulations are depicted in Section 3.
In the simulations of this study, two different phases are considered: air and water.
The time processing of each simulation was approximately 3.2 × 104 s (9 h).
V European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, Lisbon, 2010
Horko, CFD Optimization of an oscillating water column energy converter, MSc.

Flow calculation and experiment of photovoltaic centrifugal pump under weak radiation, Journal of Drainage and Irrigation Machinery Engineering, V28(2010), p.305-309 [4] Numerical simulation of internal flow through the spiral casing of centrifugal pump,Journal of Jiangsu University, V25（2004）, p.185-188 [5]Cui Baoling.Numerical simulation and theoretical analysis of high-speed centrifugal pump with inducer.
Hydrodynamic forces in centrifugal pump and compressor impellers in volute casings:measurements using magnetic bearings and CFD simulations.

Ni Mingjiu et al. [4] studied droplets motion and deformation under surface tension and shear stress with numerical simulation, concluded that when capillary number and shear viscosity ratio of two phases are over the critical value.
Jiang Yong, Fan Weicheng et al. [6] describe droplets breakup with instability theory, and carry out three-dimensional simulation for spray process in burning device.
Control Equations In order to study droplet deformation and breakup in high gravity field, a theoretical model is presented firstly, then simulate droplet deformation and breakup process with commercial CFD software Fluent.
Numerical simulation on breakup and collision of droplet in gas-liquid cyclone separator, J.

The simulation is performed for a wide range of Reynolds number from 10,000 to 30,000 and the volume fraction of the solid nanoparticles in the base fluid is from 1% to 5%.
A commercial computational fluid dynamics software ANSYS Fluent 12 is employed for this simulation, k-ω SST turbulent model is chosen for the single phase analysis.
The simulation is carried out with two dimensional domain and axisymmetric condition at the centerline.
For the simulation, SIMPLE algorithm under second order upwind discretization scheme is employed.
To validate the commercial CFD code, the numerical results are compared with the Nusselt number obtained from Prandtl analogy [11], which is shown in fig. 2.

When simulation results are qualitatively compared to Fig. 3, the similarity is obvious.
Simulations using three dimensions are already underway.
The question is again what we want from the simulations.
For a long time it has been possible to make comparisons between different nozzle designs using either water models or CFD modelling without solidification.
Nieminen: Real-Time Simulation of Heat Transfer in Continuous Casting.

LTD, Chengdu, Sichuan, 610031, China a wastewater_2000@163.com b 13880804985@qq.com c tey_lsp@163.com Keywords: Heat release rate, CRH Passenger rail car, Window glass, Ignition temperature, Fire numerical simulation.
To some extent, the fire spread speed and scale mainly depend on the HRR, which is an important parameter for the fire protection and control technology, especially such as the fire risk assessment and fire numerical simulation.
In the following, the experiment and numerical simulation methods are combined to research the influence of window glass ignition temperature on the HRR of CRH passenger rail car.
Migoya [7] showed a method to determinate the HRR using sensors that can be installed inside an operational road tunnels by comparison with CFD calculation.
Influence Analysis of Window Glass Ignition Temperature on the HRR According to the simulation results and figure 4, 5, when the window glass ignition temperature is 470℃, 525℃, 580℃, the window is not broken during the whole fire process, but from beginning to end closed to prevent the outer fresh air into the passenger rail car, so the peak HRR only can reach 18.4MW, and then begins to decline dramatically due to the oxygen deficit.

Optimization of Flow Control Device in 300,000t Heavy-duty Casting and Forging CCM Tundish Xiong Wei1,a, He Zhu1 and Wang Guoqiang1 1Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China axiongwei@wust.edu.cn Keywords: tundish; flow control device; optimization; numerical simulation Abstract.
With the rapid development of computer technology, numerical simulation has higher accuracy and become an importance means for engineering equipment design and process optimization[4-6].
In this paper, numerical simulation of molten steel flow in 300,000t heavy-duty casting and forging CCM tundish is developed based on the Fluent.
Computational Method Mathematical model is developed by differential equations and boundary conditions, and the phenomena of fluid flow in tundish are simulated by the CFD software of Fluent.
The number of grid is about 200,000 in the numerical simulation.

A two-dimensional computational fluid dynamics (CFD) was conducted to solve the model equations.
Only a few authors performed numerical simulation of the flow at the vicinity of the cell.