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The fire simulation method in each fire modelling software is selected based on the software capabilities.
The more precise mathematical fire models include primarily the computational fluid dynamics (CFD) simulations and zone fire models [10, 12, 13, 25].
These window openings are considered permanently open throughout the simulation.
Comparison of CFAST and FDS for Fire Simulation with the HDR T51 and T52 Tests.
Comparison Studies of Zone and CFD Fire Simulations.

In this paper the internal flow patterns of a sludge pump with three different recessed centrifugal impellers were analyzed based on CFD by using the turbulence model to close the time-averaged Navier-Stokes equations.
In this paper the three-dimensional internal flow fields of sludge pumps with recessed centrifugal impeller, a kind of no-clogging pump, were numerically simulated by means of computational fluid dynamics and famous commercial CFD software Fluent.
Since the model test of sludge with real mud or sludge will be very difficult and expensive, so that the fluid to be used in simulation is clean water at 200C in initial design stage.
Fig.3 Meshes of computed domain 4 Analyses of Internal Flow Patterns and Comparison of Energy Performance 4.1 Analyses of Internal Flow Patterns Based on the numerical simulation results and data on computed nodes, flow fields and pressure distribution can be drawn.

Fire simulation with the use of SS-A The case study is based on the initiation of a fire on the mezzanine floor of the building, in the meeting room of the Academy of Romanian Scientists (presented in Fig. 4).
This time was determined using a numerical simulation, a smoke detector being modelled in the burning area, placed 5 cm below the ceiling and in the center of the room and the necessary time to trigger it was measured.
For the SS-B, the numerical simulation of fire development, Fire Dynamics Simulator (named FDS) is used and for the SS-E, the numerical simulation of human evacuation in case of fire, Fire Dynamics Simulator with Evacuation (named FDS+Evac) is used.
Presentation of the FDS software FDS is a software that is based on Computation Fluid Dynamics (CFD) models for numerical simulation of fire development.
The main properties of agents used in the numerical simulation are presented in Table 3: Table 3.

The left figure of each diagram is the Mach contour corresponding to airfoil status by CFD calculation.
Three sets of grid gain fine agreement with experimental data of the shock start point, however, only one experimental data after the shock deviates from the CFD results.
Other experimental data points in good accordance with the simulation.
From the comparison of three sets of computational result and the experimental data, it can be concluded that the computational method is creditable and the CFD tool is appropriate for this kind of flowfield simulation.
The simulation of inlet restart process begins at an unstarted inlet flowfield.

Numerical simulation was conducted on the base of Mixture model and Reynolds stress (RSM) turbulent model by Fluent CFD software.
The numerical simulation results lay the foundation for the next experimental study.
Sand phase is also regarded as a fluid during numerical simulation.
Build the numerical simulation calculation model of single inlet and single outlet and select the Reynolds Stress Model (RSM) and the Mixture Multiphase Models to carry out numerical simulation.
The optimum structural parameters were confirmed through numerical simulation.

Simulation results for TKE show accurate profiles.
Simulation results for horizontal heated channel flows obtained with FLUENT are presented.
Numerical results are validated by direct numerical simulation “DNS” data for Reτ = 150.
Simulation Procedures Test case.
CFD, accepted (2010)

CFD Simulation of the Hydrodynamics of Core-Annular Flow of Oil, Gas and Water in Elliptic-Cylindrical Duct J.L.
Figure 3 represents the mesh used during the simulation.
Table 1 - Fluid properties used in the simulation.
Dynamic simulation of the morion of capsules in pipelines.
Applying CFD in the Analysis of Heavy-Oil Transportation in Curved Pipes Using Core-Flow Technique.

CUDA based Numerical Simulation of Cavity Flow and Performance Analysis Xiaoping Li1, a, Hongming Zhang1,b 1Department of Engineering Mechanics,Kunming University of Science and Technology,Kunming 650500,P.R.China alxping@myopera.com, bCorresponding author:hmzhang8888@126.com Keywords:cuda , cfd , finite volume method, gpu computing, cavity flow Abstract.Cuda has been widely used in computational fluid dynamics due to the powerful abilities of floating point arithmetic on gpu.This paper solved the Navier-Stokes equations of two dimensional incompressible flow using parallel programming on cuda.
The finite volume method and the second-order upwind discretization scheme were used in the simulation.The speed of serial c program and the cuda based program were compared and we also compared the two programs on different hardware.The simulations got high precision results,which showed that the cuda based parallel computing is much more efficiency,and the parallel algorithm could get a more than 10 times the acceleration.
The finite volume method the second-order upwind discretization scheme were used in the simulation.And the efficiency of c program and the cuda based program were compared and the result was also tested on two different hardwares .
Simulations result Both the c program and the cuda program were tested on two computers.The hardware information is list aa blow: Computer1:Intel Pentium 2*2.0GHz+ Nvidia Geforce 8600GT Computer2: AMD Opteron 6*2.1GHz +Nvidia Quadro1800 Fg.3 Streamlines and Pressure contour From Fg.3 we can find a main clockwise whirlpool and the simulations has a high precision,for we can two small swirls.
Our future work is to continue improving the parallel method and applying the solver to our engineering simulation problems.

China apwc@heut.edu.cn, bjxlyg@heut.edu.cn, chanju3721@163.com Keywords: Bulk cement tanker, Fluidized, Simulation, FLUENT Abstract.
The fluidization models of the fluidized bed were created in the CFD (Computational Fluid Dynamics) software FLUENT, which were then used for simulation for an improved fluidization process, and finally the fluidization quality was analyzed.
Simulation of this program in FLUENT indicates that the type of board can eliminate the dead band of splitter board effectively.
Compared to 42°of the original design of the quality of fluidization, choose 40°and 44°cases in simulation.
Simulation result shows in Fig. 2, Fig. 3 and Fig. 4.

Euler-Lagrange approach and Euler-Euler one are two approaches for modeling and simulation of the cohesive mixing.
Modeling and Simulation Techniques.
With the development and popularity of computer use, the improvement of the computing capacity, the enlargement of memory of the computer and the improvement of the algorithm of modeling, Computational Fluid Dynamics (CFD) simulation technique is widely employed for the mixing process operation.
The fundamental for flow modeling and simulation is based on control equations and their solving method of the mixing fluid.
Two approaches for modeling and simulation of the cohesive mixing are Euler-Lagrange approach and Euler-Euler approach.