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The three dimension CAD model is imported into the commercial CFD software.
Figure 6 The result of signal processing unit simulation in original design.
Figure 9 The result of signal processing unit simulation in creating vents.
Table 1 COMPARSION OF THE TWO SIMULATIONS RESULTS Components Temperature of the original design in the simulation Temperature of the modified design in the simulation D2 122˚C 104˚C D8 128˚C 105˚C D9 126˚C 105˚C D10 127˚C 105˚C D11 126˚C 105˚C Figure 11 Result of signal processing unit simulation in modified design.
CFD Analysis of an Avionic Module for Evaluating Power Distribution as a Thermal Management Measure for a Double-sided PCB.

A three-dimensional CFD model has been implemented to simulate temperature field, material flow, and microstructural aspects in an Eulerian framework.
In the present investigation, material flow, temperature distribution and recrystallization phenomena in FSW have been simulated by a CFD model in an Eulerian framework.
Shercliff, 3-Dimensional CFD modelling of flow round a threaded friction stir welding tool profile, J Mater Process Tech 169 (2005) 320–327
Khraisheh, Modelling of Friction Stir Processing Using 3D CFD Analysis, Int J Mater Form 2 (2009) 315–318
Debroy, Numerical Simulation of Three-Dimensional Heat Transfer and Plastic Flow During Friction Stir Welding, Metall Mater Trans A 37 (2006) 1247-1259

., Centrum excellence Telc, Batelovska 485, Telc, 58 856, Czech Republic avladimira.michalcova@vsb.cz, bkuznetsov@itam.cas.cz, clenka.lausova@vsb.cz, diveta.skotnicova@vsb.cz Keywords: aerodynamics, wind tunnel contraction, CFD Abstract.
Suitable numerical models were chosen on the basis of experimental results to define the theoretical flow characteristics of a simulation process in the enclosed chamber of the nozzle.
Skotnicova, Analysis of experimental measurements and numerical simulations of a heat field in the light weight building structure, Advaced Materials Research, 2014, Vol. 969, pp. 33-38
Kozubkova, Investigation of viscous fluid flow in an eccentrically deposited annulus using CFD methods, In: Proceeding of the 8th International Conference on Experimental Fluid Mechanics, 2014, Kutna Hora, Czech Republic

Design and simulation analysis of low temperature air deep hole processing system Hai Peng 1,a Qiang Wang 2,b 1.2School of Mechanical Engineering, Xi'an Shiyou University, Xi’an, Shannxi (710065), China ahpeng1104@sina.com, bwangqi ang1986@sina.com Keyword: Low temperature air cutting, Deep hole processing, Flow field simulation Abstract.
In view of the model is too complex, it is difficult for visualization research through the traditional physical simulation experiment.
Beside that, it is also difficult to get information near the chip blade; Computational fluid dynamics (CFD) is the effective method to solve the problem of two or three dimensional flow,and the flow information can be easily gained by CFD simulation whereas need a lot of test in the past.
Fig.4 Setting location diagram with boundary conditions The analysis of flow field simulation results contrast.
Xiao: Based on CAXA and FLUENT deep hole nesting of 3D numerical simulation of cutting fluid flow[J].

According to the results of simulation, we investigated the different radiant heat flux parameters, burning losses under different heat release rates and rising rates.
Also, we compared the simulation results with the actual smoke trace and burning rates in fire accidents.
The numeric simulation test in this article applies the FDS [2-4] (Fire Dynamics Simulator, Fire dynamics simulation) software which developed by USA NIST.
FDS is a CFD model calculates the flowing fire driven fluid.
[5] Fu-Jun Wang, Computational Fluid Dynamics Analysis -CFD Software Principle and Application [M].

This paper studies the spatial concentration distribution and particle tracks of students talking continuously in a classroom with two air distribution methods, including mixing ventilation (MV) and displacement ventilation (DV) using CFD simulations.
This paper studies the spatial concentration distribution of student talking continuously in a classroom with two air distribution methods, including mixing ventilation and displacement ventilation using CFD simulations.
At present, there are three simulation methods for turbulence, which are Direct Numerical Simulation (DNS), Large Eddy Simulation (LES) and Reynolds-Averaged Navier-Stokes (RANS).
The simulation results could be in good agreement with experiment results using RNG k-εmodel, so this study using RNG k-ε model to simulate the indoor airflow.
Because of the high turbulence intensity and the small particle with the size of 5μm used in the simulation, the particles’ movement is mostly influenced by the indoor airflow.

The loads and response are calculated through the CFD module System Coupling in software package ANSYS14.5.
The loads and response on the flexible riser are analyzed through the CFD module System Coupling in software package ANSYS14.5.
Numerical simulation and verification of the wave tank For  incompressible fluid, continuity equation is (1) Where is velocity vector of the flow.
Fig.1 Wave contour Fig.2 Wave amplitude at Fig.3 Wave’s shape in the damping region Simulation and analysis of flexible riser in the numerical wave-current tank The calculation is done with the aid of software WORKBENCH 14.5.
The loads and response on the flexible riser is analyzed through a series of numerical simulations.

Study on Numerical Simulation of Gas Explosion inside Compression Compartment of Gas Filling Station Wang yu1, a, Wu yunyi2,b 1Dept. of Safety Engineering, Technology Institute of Sichuan Normal University, Chengdu, China 2Sinopec Gas Branch, Beijing, China a cawn229@sohu.com, b 249369974@qq.com Keywords: Compression Compartment; Gas Explosion; Numerical Simulation; Ignition Source; Abstract.
In this paper, numerical simulation was adopted to build 3D model of compression compartment and simulate gas explosion pressure and flame propagation behavior under different ignition point location, open-pressure and weight of relief panels.
CFD calculation model The finite volume method is adopted to solve N-S equation under 3D Cartesian grid.
However, from the simulation results, the largest explosion pressure in the compression compartment of this case is between 6.7kPa and 60kPa, while the damage pressure of ordinary glass in explosion is 2-7kPa.
Modelling of turbulence and combustion for simulation of gas explosion in complex geometries[D].

The temperature distribution is usually modeled using a thermal analysis with a surface heat flux [7] or a CFD model, which considers the effect of material movement on temperature gradient [8].
In Eulerian method, there is no problem with mesh distortion as in a Lagrangian method and it has been used earlier for themomechanical simulations in drawing and rolling processes [6].
Shercliffa, 3-Dimensional CFD Modelling of flow round a threaded friction stir welding tool profile, J.
Reynolds, Parametric studies of friction stir welding by commercial fluid dynamics simulation, Sci Tech Weld Join. 11 (2006) 200-209
Analysis of transient temperature and residual thermal stresses in friction stir welding of aluminum alloy 6061-T6 via numerical simulation.

Investigation on Laminar Flow Field Performances in a Dual-Impeller Stirred Tank Deyu Luan1,a, Shenjie Zhou2,b and Songying Chen2,c 1 School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China 2 School of Mechanical Engineering, Shandong University, Jinan, 250061, China aqddy05@163.com, bzhousj@sdu.edu.cn, cchensy66@sdu.edu.cn Keywords: dual-impeller, stirred tank, laminar model, numerical simulation, layer clearance Abstract: The 3D flow field generated by a dual-impeller in the agitation of glycerin fluid was simulated using the commercial CFD package.
In this study, We focus on the performance of a dual-impeller stirred tank with four different combinations using CFD Fluent V6.3® software.
Both regions were discretized by unstructured tetrahedral grid (Fig.1) for the simulation, in which the rotorregion adopted finer grids with the grid cell numbers of 346,000 or so, while the static region used relatively coarse grids with the grid cell numbers of 358,000 around.