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In this study, the CFD study was conducted by using Fire Dynamics Simulator of NIST [13, 14].
Simulation Set Up Simulations were carried out using Fire Dynamic Simulator (FDS) of NIST version 6.0.
FDS is a computational fluid dynamics (CFD) model of fire-driven fluid flow.
The simulation time was set as 500 second.
Smoke control in case of fire in a large car park: CFD simulations of full-scale configurations.

This type of model represents the oxidation of the metal with a scalar, and is widely available in commercial casting CFD packages.
Reilly [6] developed a model built around FLOW-3D™, a commercial CFD package, which allows user defined subroutines to be incorporated.
Where a distinct entraining event was identified, a particle was placed, to be tracked by the CFD solver using a Lagrangian method.
The motion of the particles is then tracked using a Lagrangian method by FLOW-3D™, for the remainder of the simulation.
Hopperstad, Through-process numerical simulations of the Structural Behaviour of Al-Si Die-Castings, Comp.

Then CFD has been a powerful tool for engineers to analyze and solve questions about fluid flow.
So some advises are provided for those engineers who design the structure of antennas or compute the wind loads by numerical simulation.
Finally, the influencing curve versus mesh division for simulation result is shown in Fig.5.
The modeling principle of the outer flow field in CFD is described in detail.
Influencing factors in numerical simulation of wind load on buildings [J].

Therefore, Compared with 6BT impeller, this research uses CFD as a tool to study the effect of 6BT impeller on fluid pressure distribution and power consumption.
The 3D flow field was simulated using the commercial CFD package, Fluent V6.3.
The average shear rate can be used to evaluate the apparent viscosityof the solution using Herschel- Bulkley rheological model: (3) The xanthan gum solution rheology was modeled as Herschel-Bulkley fluid, and all simulations were conducted in the laminar and low transitional regimes using the laminar model.
The simulations were considered converged when the scaled residuals for each velocity transport equation were below 1×10-4.
Fig.4 and Table 4 shows the pressure profiles of the flow field and CFD values of agitation torque in xanthan gum solution, respectively.

This analysis considers the computational simulations of the temperature distribution of a propane-air customary flame combusted from an aeronautical fire-certification burner being set in accordance to the ISO2685 standard.
The simulation was performed by ANSYS Fluent v.12.1 using three-dimensional and steady-state settings to ensure requisite convergence.
Therefore, the corresponding mass flow rates retrieved from [4] were used as boundary conditions in CFD.
One reason that could account for the over-predicted temperature in CFD would be the non-stoichiometric mixture of fuel and air.
The mass flow rates and the relative mass fraction was retrieved from previous experimental studies and inserted into CFD.

Zhang etc. did simulation and optimization on CFD engine cooling fan [4].
CFD and CAA are used to predict aerodynamic noise by step coupling methods.
The main reason is that there is a certain bias error in CFD simulation and in the equivalent sound source calculation.
A Study on CFD Simulation Analysis and Noise Reduction for the Cooling Fan of Car Engine.
Simulation and Optimization Research on Engine Cooling Fan Based on CFD[J].

Application of CFD method in prediction of relationship between discharge and differential pressure of inlet passage of bulb tubular pump[J].
CFD numerical simulation on modification of flow pattern with flow deflector at fore-bay of pumping station [J].Water Resources and Hydropower Engineering, 2006, 37(9):41-43.
Analysis and optimization based on CFD numerical simulation on inlet flow pattern of lateral diversion and intake pumping station [J].Water Resources and Hydropower Engineering, 2012, 43(2):72-75.
Numerical Model for Simulation of Pump-Intake Flow and Vortices[J].
Consideration to several problems in the application of CFD to pump [J].Drainage And Irrigation Machinery, 2005, 23(5): 1-10.

The validated method was adopted in the numerical simulation, the wind tunnel test were carried out in order to validate the results of numerical simulation.
With the development of computer, the CFD software are widely applied on the simulation around automobile, but its astringency and precision need increase.
The result of simulation is 0.373, the result of test is 0.360, and the error is 3.6%.the result of simulation is adjacent to the test result.
The flow lines of test were analyzed contrast with results of CFD to validate the correctness of simulation results.
Aerodynamics of a Pickup Truck: Combined CFD and Experimental Study[C].

For the application of CFD in vehicle aerodynamic simulation and its significant, Hucho [1] had performed a comprehensive review.
Since the first researchers [3, 4, 5] applied CFD to vehicle external aerodynamic prediction, applications of CFD for airflow predictions around the vehicle have become widespread.
However, since the turbulence models in CFD used approximations, the simulation results may contain uncertainties.
This study used commercial CFD software, FLUENT to conduct all the numerical investigations.
Moreover, flow field at the rear end of road vehicles is highly unsteady, so DES (detached eddy simulation) or LES (large-eddy simulations) model should be taken to investigate the transient characteristics of the wake vortex in the future.

Standard curved pipes and guide plates which are widely used in practical application are simulated using computational fluid dynamics(CFD) in this paper.
Referring to the standard flue pipe upstream electrostatic precipitator used in a coal-fired power plant, flue gas pressure and velocity distribution in flue pipes bends using computational fluid dynamics(CFD) are investigated in this paper.
Simulation CFD implementation.
Table 2 Pressure loss simulation results Models Without inner supports With inner supports without guide plate with guide plate without guide plate with guide plate Pressure loss[Pa] 25.27 30.06 34.03 37.56 Table 3 Outlet velocity deviation simulation results Models Without inner supports With inner supports without guide plate with guide plate without guide plate with guide plate Outlet velocity deviation 0.39 0.24 0.51 0.43 Pressure distribution analysis.
According to current simulation results, the pressure loss of the flue pipe bends with guide plates is more than those without guide plates.