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Based on the computational fluid dynamics theory and gas outburst theory, this paper used the ANSYS CFX CFD code to model the gas diffusion after gas outburst.
Simulation Results and Analysis Space-time Diffusion of Explosion Danger Area after Gas Outburst.
The simulation results are shown in Fig. 4.
Simulation Results are shown in Fig. 5.
[16] Fujun Wang: Computational fluid dynamics analysis-CFD Principal and Application (Qinghua University press, Beijing, 2004).

Finally, we verified the validity of the simulation by experiment.
Simulation of the Monomer Battery.
Put the single battery into the battery packs(Fig.7), and use the Fluent software for the CFD simulation of the EVs under the natural cooling, then compare the simulation results with the real vehicle test, the results obtained is consistent.
Therefore, using the CFD simulation of the battery box can accurately predict the thermal field.
Forced Convection Simulation.

The simulation results were analyzed in terms of experimental removal rate and WIWNU (within wafer non-uniformity) for ILD (inter level dielectric) CMP process.
Computational fluid dynamics (CFD) analysis techniques are being used to study and solve complex fluid flow and transfer phenomena such as chemical reactions by means of computer- based simulation [3].
The number of abrasive particles is 50 for CFD investigations.
Fig. 7(a) and (b) show the 3D simulation results of relative static pressure distribution of the coupon wafer surface on the pad without and with groove.
The simulation results show that much of particles are trapped and concentrated at the top position of the groove in the pad.

Key processes of heat and mass exchange at the phase interface are simulated by user defined functions (UDF) in commercial CFD software.
Numerical Simulation Modeling.
A two-dimensional model is built for the simulation in this paper, as shown in Fig. 1.
Both simulation and experiment results show that the heat transfer coefficient decrease with the rise of quality.
The result of numerical simulation indicates that: a.

Computational fluid dynamics (CFD) is an excellent tool to study the cooling issues in data centres.
In the last decade, extensive research has been conducted to study thermal management in data centres using CFD [1-3].
A CFD analysis has been performed to provide detailed flow and thermal fields.
CFD Simulation A prototype data centre is modelled as an 8×3.2×6m3 enclosure located over a 60 cm deep under-floor plenum.
From CFD results, rack and CRAC inlet and outlet temperatures are obtained and the total exergy destruction in the airspace is calculated.

The simulation of boiling heat transfer in metal foam tube Sun Bin1,a, Cui Binbin1,b, Liang Chao1,c 1Department of Energy and Power Engineering, Northeast Dianli University, Jilin, Jilin 132012,China a jlsunbin@126.com, b.binfenshijie1987@sina.cn,c 453446902@qq.com Key words: Metal foam, Pressure drop, Boiling heat transfer, Numerical simulation Abstract: A three-dimensional physical mode of metal foam tube was built by CFD software.
The Brinkman-Forchheimer extended Darcy equation and user-defined function(UFD) of the mass transfer and energy transfer between vapor phase and liquid phase compiled by C language were used in the simulation of boiling heat transfer in metal foam tube.
The simulation results agree well with the experimental data.
Under different mass flow rates, the changes of pressure drop per unit length in tube with vapor quality are showed in figure 1.And the simulation results agree well with the experimental data.
It can be seen that vapor phase distributes uniformly in the metal foam tube at the beginning of the simulation (figure 2(a)).

A three-dimensional dynamic simulation model of the molten iron flow field was presented in the paper with Fluent simulation software.
Simulation System and Model The flow field simulation of molten iron in the desiliconization converter belongs to Computational Fluid Dynamics (CFD).
CFD is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows.
Simulation Software and Hardware.
Simulation Model.

Fan(2007) [15] mainly applies multi-agent system to the mine ventilation simulation, but the problem is that the simulation results can only be numerical and shown in tables, without any 3D even 2D simulations.
In the paper, he investigates the rule of smoke spreading based on the mathematical and physical model of fire by the numerical simulation technology, the mine fire network simulation technology, external fire source location and selection of escape route, and the technology of coupling between computational fluid dynamics (CFD) simulation and virtual reality software.
Scenarios simulation and roaming.
Du, et al(2010) [38], Zhu, et al(2010) [39], and Tan(2010) [41], for instance, try to simulate the process of the fire and smoke according to the numerical calculation results based on CFD.
Du, et al(2010) [38] and Tan(2010) [41] manage to fuse CFD calculation with VR software.

In the logarithmic region results from numerical simulation overestimate T+.
"CFD modeling of heat transfer in turbulent pipe flows".
"Application of computational fluid dynamics (CFD) for nanofluids".
Turbulence Modeling for CFD.
"Direct numerical simulation of turbulent pipe flow".

The whole physical parameters field can be used to describe the raceway boundary precisely, but all of the physical parameter fields are obtained from numerical simulation so far and there isn’t a specific criterion to define the raceway boundary.
Recently, Toshihiko et al11) had tried to simulate the particles and gas flows in the raceway zone in a blast furnace of which dimension was almost the same as that of the commercial blast furnace using CFD+DEM.
The position of every particle can be obtained by this simulation and then the raceway zone can be determined
(4) Iso-contour of typical instantaneous coke particle velocity in particle velocity field At the same time, Toshihiko et al [11] calculated the instantaneous velocity of every particle through CFD+DEM, and then the raceway boundary was defined by the iso-contours of instantaneous coke particle velocity scalar.
All of the above methods of raceway boundary determination were based on numerical simulation.