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The finite element simulation technology The implementation of the finite element simulation test mainly includes stress analysis and fault prediction.
The main content about simulation test is shown in figure 1.
Maximum response displacement （mm） Maximum response acceleration（G） 1 0.057 5.7 2 0.045 7.2 3 0.02 7.18 4 0.196 5.1 5 0.028 6.4 6 0.0028 7.5 Thermal simulation based on Flotherm Flothem is developed by Flomerics company for CFD simulation in the field of electronic heat dissipation.
Fig.3 Device’ CFD modal in Flotherm and thermal analysis result Life prediction simulation based on Calce PWA Calce Sarah is launched by Calce laboratory at the university of Maryland as the reliability simulation software, include temperature and vibration finite element simulation and fault prediction.
Vibration simulation using MATLAB and ANSYS[M].

Calculations was carried out using SUTCAST simulation software based on solving Navier-Stokes equation and tracing the free surface using SOLA-VOF algorithm.
This arrangement, similarity of different molds except of sprue bases, allows for direct comparison of the behavior of liquid metal flow and performance of the castings acquired by using different sprue bases. 2.2 CFD Model In order to simulate the metal flow in gating systems with different sprue base, CFD modeling was used.
In the filling simulation, the volume of fluid (VOF) method was implemented to track the moving free surface of molten aluminum in the gating system.
Conclusion Effects of employing different sprue bases (No well, standard, large wells and curved sprue base) have been investigated by computational fluid dynamics (CFD) in the present work.
Hirt: 'Casting simulation: mold filling and solidification- benchmark calculations using FLOW-3D®.

e-mail: wanjerm3@yahoo.com.my Keywords: PEM fuel cell; thermal analysis; CFD; cooling.
Analytical comparison on its cooling performance, air velocity and temperature distribution, plus characterizing its thermal gradient based on computational simulation using Computational Fluid Dynamics (CFD) codes are conducted as a platform for design optimization.
Analytical Models and simulation parameters A.
Ms60 60 1.95 2 150 1 Simulation Parameters The simulation was conducted using STAR-CCM Computational Fluid Dynamics (CFD) platform.
Table 2 lists the boundary conditions applied for both simulation cases.

Computational fluid dynamics (CFD) method was applied to the study of flow field in the agitation of glycerin fluid with a Rushton impeller and a pitch 4-bladed turbine.
This paper is concerned with characterization of laminar flow field of a Rushton impeller and a pitch 4-bladed turbine (4PBT) operated respectively in a stirred baffled vessel by numerical simulation using CFD Fluent V6.3® software.
Therefore, original grid cell numbers were employed for simulation of the stirred tank.
The simulations were run using the first-order upwind discretization scheme.
At the end of the simulations, the steady flow field in the entire tank was determined.

However, CFD (Computational Fluid Dynamics) became an important tool to simulate diesel working process.
In this paper, multi-dimensional transient numerical simulation of working process of diesel engine was done based on computational fluid dynamics.
The simulation analysis of the flow characteristic in diesel engine and was carried by using CFD software.
In numerical simulation, the rationality of the meshing directly affects the accuracy of the calculation results.
Analysis Result of Simulation.

The simulation results have a good agreement with the experiment.
The values of these parameters will be used to set up the validated CFD model.
In this study, the time step (0.1s) of CFD solution is time interval Δti.
Eisenberg, Vulnerability Model: A Simulation System for Assessing Damage Resulting from Marine Spills.
Guo-ming, Quantitative risk analysis of toxic gas release caused poisoning-A CFD and dose-respoonse model combined approach.

CFD Simulations and Experiments of Flow Fluctuations Around a Steam Control Valve.
Flow analysis in valve with moving grids through CFD techniques.
Improvement in a control valve geometry by CFD techniques.
Simulation Model for Compressible Fluid Passing Through a Pressure Control Valve. 7th Intl.
Simulation and Scientific Computing, (2008),p.456-459.

Effectiveness Validation of CFD Technology To verify the validity of CFD technology further, we compared the actual on-site photo and numerical calculation contours of the burst pipe inner and outer wall in the CO2 acid gas field, as shown in Figure 5-1 and Figure 5-2.
a The Actual Position of the Burst tee b CFD Calculation of Turbulence Intensity Distribution c CFD Calculation of Shear Force Distribution d CFD Calculation of Temperature Distribution Fig 5-1 CFD Verification Comparison Chart of the Burst Pipe Inner Wall Outer Wall Surface Verification CFD verification comparison chart of the burst pipe outer wall surface is shown in Figure 5-2.
a The Actual Position of the Burst tee b CFD Calculation of Turbulence Intensity Distribution c CFD Calculation of Shear Force Distribution d CFD Calculation of Temperature Distribution Fig 5-2 CFD Verification Comparison Chart of the Burst Pipe Outer Wall Figure 5-1 and Figure 5-2 show that the position of burst pipes is actually at low speed vortex zone, it is highly consist with the corrosion location prediction results based on CFD technology in section 4.3.
Summary 1) In the synergistic effect of low-speed vortex, CO2 corrosive media, liquid water accumulation, heat-affected, turbulent flow patterns and so on, it is easy to exacerbate corrosion thinning on pipe inner wall surface in low-speed vortex zone of object, induce burst pipe failure accidents, there is a huge security risk. 2) The calculation of using CFD numerical simulation technology is highly consist with the actual failure cases.
As you see, it is effectively to predict the location of the typical pipe fittings corrosion of gas gathering pipeline, guide inspection on-site, promote the detection efficiency, ensure the safety of energy transportation. 3) On the basis of the universal law obtained from using CFD simulation technology, we can consider to carry out secondary development technology in follow-up, to realize the research of the relevance between flow field simulation and the corrosion rate.

Hydrodynamics Simulation of Gas-solid Flow Field in Conveying Vessel Yue Cuia, Hong Gaob, Jinsheng Sunc , Xu Chend School of Chemical Engineering & Technology, Tianjin University, 300072, China awillyoungcy@163.com, bhgao@tju.edu.cn, cjssun@tju.edu.cn, dxchen@tju.edu.cn Keywords: CFD; Pneumatic conveying; Gas-solid flow.
In this case, the gas-solid flow in the conveying vessel is studied through numerical simulation by FLUENT software.
The initial charge is about half of the volume and non-slip boundary condition is used for this non-steady simulation.
Simulation results show that the dead zone has disappeared and little particle remains.
This CFD model is based on the two-fluid approach combined with the kinetic theory of granular flow.

To study the blade-wake interaction of vertical axis tidal turbine (VATT)，particles were placed in the flow field to trace blade wake during numerical simulation.
Numerical simulations were conducted utilizing Euler-Lagrange model.
On the other hand, CFD methods can be divided into two categories: one based on Euler model and the other based on Euler-Lagrange model.
So this paper used the CFD method based on the Euler-Lagrange model to capture the blade wakes.
After blades drill through, the wakes would distortion and curl up to form big vortexes. 4.Conclusion In order to understand blade-wake interaction of VATT, place particles to trace blade wake during numerical simulations, numerical simulations were conducted with Euler-Lagrange model.