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And the special heat environment was studied by using CFD software Fluent to do some numerical simulation.
Vented confined explosions in Stramberk experimental mine and AutoReaGas simulation.

Numerical Method This paper uses CFD technology to solve the steady three-dimensional RANS equations, for obtaining detailed flow field parameters, choosing compressible ideal gas as calculation materials.
Spalart-Allmaras model is selected to solve turbulence equation, which has strong fault tolerance ability and suits for simulation the complex flow, to ensure accuracy and efficiency of the calculation.
In the simulation process, when the pressure ratio reaches maximum value, convergence error decreases slowly and has obvious cyclical fluctuation, which implicates that the compressor has appeared to stall[8].
In brief, compressor performance of numerical simulation coincides well with experimental data, especially, predicting the stall boundary with fairly accuracy.
So the numerical simulation method and the grid used in this article for prediction is credible.

So it is necessary to conduct flow field simulation.
The application of CFD technology in the analysis of residential wind environment [J].
District planning a large flow field simulation and environmental impact analysis [J].

Introduction Different methods in aircraft design and development process are being used for aircraft behavior prediction such as theoretical methods, computational fluid dynamics (CFD) and wind tunnel testing.
Peralta, Simulation of Aircraft Flight Dynamics by Means of Dynamically Similar Models, Proceed, of American Institute of Aeronavtics and Astronavtics, Modelling and Simulation Technology Conference-98, pp. 64-69, Boston, U.S.A., August 10-12, 1998

The modeling and meshing process is finished by Star-ccm+, a powerful and innovative CFD software.
As shown in Fig.2, either in experiment or simulation, a clear shock wave can be observed at the similar position, as well as a significant high temperature boundary layer near the surface of the model.
Fig.1 Cross section diagram of nose cone model Fig.2 Comparison of ground experiment and numerical simulation Comparisons of ground experiment and space flight.

Simulation Configuration We consider a three-dimensional groove weld, which is commonly used for joining two parts edge-to-edge.
The workpiece is discretised into SPH particles with a 3 mm spacing giving a total of 65,648 particles in these three-dimensional simulations.
Cleary, In 7th International Conference on CFD in the Minerals and Process Industries, in Melbourne, Australia

Fig. 2 The cotton conveyed pipeline for removing foreign fiber Numerical Simulation of Cotton Flow in Cotton Conveyed Pipeline Pipeline Mesh.
Numerical Simulation of Cotton Flow in Cotton Conveyed Pipeline
Wang: Computational Fluid Dynamics---CFD software principle and application (Tsinghua University Press, Beijing, China 2004).

The structure of flow in the supersonic swirling separator is complex, so the Computational Fluid Dynamic (CFD) has been a way to guide the design of the supersonic swirling separator.
Simulation approach Geometry Model.
References [1] Lin Cheng, Eriqitai, Weian Ji, Bin Song, Numerical simulation research on the vortex generator and nozzle of natural gas supersonic separator, J.

Among them, the outer loop is the whole system optimization, while the inner loop is the reliability analysis with multidisciplinary analysis or simulation.
Because of making an approximate model by response surface method, the time used in reliability analysis and simulation will significant decline.
In this paper, the fluent-heat transfer-solid interaction in the MDF systems is solved by iteration, and the MDF system is optimized through arithmetic.Based on the finite element theory, the static strength and thermal conductivity are solved in commercial software Nastran using tetrahedral mesh and a unified model to achieve the order of heat - structure coupling analysis, while the 3D, compressible, viscous flow is analyzed by CFD software Numeca using tetrahedral mesh.

Finite volume method (FVM) by using FLUENT software is utilizedfor numerical simulation.
To conduct accurate results and comparing the effects of grid sizes on the results a grid generation process is done by utilizing four different grid sizes for simulating the CFD model, which are 50×200, 50×300, 100×200, and 100×30.
Results and Discussions Numerical simulation for laminar forced convection over a two-dimensional backward facing step with two different expansion ratios and two different baffle shapes was carried out to investigate the heat transfer and skin friction coefficient on the step and bottom walls downstream of the step to obtain the effects of the baffle shape and expansion ratio changes simultaneously.