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The use of CFD codes, particularly those employing LES [5], is very useful for fire modelling, predicting plume characteristics, combustion products dispersion and heat transfer to adjacent bodies.
Ryder et al. [6] consider the FDS software, which was developed by the NIST (National Institute of Standards and Technology – USA), more suitable for simulation of complex geometries in actual explosion and fire analysis than multipurpose CFD codes.
Table 1 presents fuel properties used in the simulations.
Results and Discussions Simulations considering gasoline type C.
The numerical simulation was performed neglecting wind effects.

With the method of Computational Fluid Dynamics(CFD), aerodynamic characteristics and longitudinal static stability of the conventional airship and new winged airship were comparative investigated.
Geometry Modeling 3D model of conventional airship and new winged airship used in the numerical simulations are of the same size and their only difference is that the winged airship adds a wing at the backward of the hull.
During the simulation three dimensional Reynolds Averaged NS equations (RANS) were used and coupled pressure-velocity solution was selected.
In order to ensure the simulation accuracy, realizable k- turbulence model was selected for the calculation.
Journal of Computer Simulation.

From the numerical simulation results, the influence of elevation angle of the solar cells on the wind load was presented.
The CFD software FLUENT was used to analyze the influence of windward shape on the air velocity field [4].
Numerical simulation of air flow field around the solar cells was carried out with the numerical wind tunnel method, and the structure optimization was proposed based on the simulation results in this paper.
So, it’s necessary to analyze the wind load with numerical simulation based on the finite element method.
(2) From the simulation results, the wind load of solar cells assembled with gap was lower than that of without gap, and it was decreased about 33%.

LHS(Latin Hypercube Sampling) and numerical simulation of inviscid muzzle flow field were applied to obtain some samples of the muzzle brake performance.
One of the most effective way to get the muzzle efficiency value is numerical simulation of muzzle flow, which can give the impact force on the muzzle brake[1].
LHS(Latin Hypercube Sampling) is an excellent sampling method, which was bring forward by McKay for simulation experiment in 1979.
The chosen objective parameter is the impact force put on the muzzle brake by powder gas which can be obtained with numerical simulation of muzzle flow.
CFD program will be run to compute every experimental point aerodynamic parameters and then construct the RSM.

The numerical simulation analysis on flow field and temperature field in crystallizer were conducted in this paper.
High Reynolds number model was adopted on turbulence effect simulation
The numerical simulation results are coincide with practical production data.
[3] Lei Xu, Huixin Luo, numerical simulation based on ANSYS ICEM CFD and CFX, Wuhan University of Science and Technology , 2008
Mathematical simulation on coupled flow, heat and solute transport in slab continuous casting process.

Therefore, it is reasonable to adopt numerical simulation methods for fine simulation [3].
Computational fluid dynamics (CFD) was used to analysis fire overflow of external wall insulation system fire test conditions [4].FDS uses large eddy simulation technology to solve the low-speed, heat-driven flow N-S equations, and directly solves large eddy according to the thinking of large-eddy simulation [5].
HRR of fire in the simulation is equivalent as the test.
This means the fire HRR is selected reasonably in simulation.
FDS simulation of high-rise building fire smoke spread.

ZhengZhou municipal office for the construction and management of rail transit, China, 450017) azhongwei@zzu.edu.cn, byjpkl@mail.ustc.edu.cn Key Words: Urban tunnel ; Fire; Natural ventilation; Shaft height Abstract: The characteristics of smoke flow in natural ventilation shaft are studied in this paper, Using the computational fluid dynamics software FDS5.0 to build a 3D model of an urban tunnel with a smoking shaft, Large Eddy Simulation model was used to obtain the structure of flow field and the mass flow rate of natural ventilation at different shaft height, The results show that when the shaft height is low, the driving force of exhaust is weak and the exhaust capacity reduces rapidly, the flow state in shaft is controlled by horizontal inertia force; when the shaft height increase to a critical height, the exhaust effect enhance significantly, the flow state in shaft will change to stack effect control.
The flow field of fire smoke with the function of smoking shaft is analyzed in this paper, the effect of natural ventilation with the change of shaft height is studied by Large Eddy Simulation model.
Numerical simulation method and Fire scenario design This paper selects the numerical simulation tool FDS5.0 (Fire Dynamics Simulator) developed by NIST, which is a Computational Fluid Dynamics (CFD) simulation model of fire-driven flow[4].
Stack effect control horizontal inertia force control Fig.4 The mass flow rate of ventilation Conclusion This paper simulated an urban tunnel with a smoking shaft by Large Eddy Simulation model. obtaining the flow field, temperature distribution in shaft and the mass flow rate of ventilation at different shaft height.

The simulation of two different cases shows the propagation of a single acoustic mode in annular duct pictorially.
During the simulation, the most advanced perfectly matched layer[9]is used to prescribe the mode and to serve as non-reflection boundary conditions.
Mincu, Numerical simulation of the fan noise radiated through a semi-buried air inlet.
Li, X.D., et al., Numerical simulation of duct inlet noise.
CFD Journal, 2000. 9(1): 485-491

Numerical Simulation Research on Aerodynamic Characteristics of the Fixed Transition Airfoil Jixiang Shan1,a, Yong Huang1,a, Xiaoyong Ma1,b, Yonghong Li1,c and Jie Bai2,d 1 High Speed Institute, China Aerodynamics Research and Development Center, Mianyang 622661, PRC 2 China Academy of Launch Vehicle Technology, Beijing, 100070, PRC asjx637@163.com, bmxycardc@mail.ustc.edu.cn, clyhxj52@stu.xjtu.edu.cn, dvean_bj@yahoo.com.cn Keywords: numerical simulation, the fixed transition, aerodynamic characteristics, Reynolds number Abstract.
In the paper, the simulation is based on a finite volume formulation of the Navier–Stokes equations.
（a）=0.1 （b）=0.2 （c）=0.5 （d）=0.9 Fig. 5 Effect of the transition position on velocity profile (a=0º, Ma=0.6) Summary The numerical simulation is carried out to investigate the ability of the fixed transition to simulate Re number effect by comparing the aerodynamic characteristics of the test model, flight model and transition model.
Transition modeling for general CFD applications in aeronautics, AIAA 2005-0522,2005

The neck-down deformation process of glass tube was simulated by Polyflow software, and the simulation was verified by the secondary drawing of glass perform.
After the setting of the software was completed, the calculation was performed, and then the post-processing software CFD/post was used to analyze the results.
After the software setting is completed, the calculation is preformed, and the result is analyzed by the post-processing software CFD/post.
Fig. 5 Drawing temperature process of glass tube Fig. 6 Temperature profile along drawing direction of glass tube Fig. 6 shows the temperature distribution at different locations of the glass tube obtained by simulation.
(3) The simulation results of the secondary drawing process of the glass tube are verified by self-made glass tube secondary drawing devices.