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Schematic diagram of Micromixer and inside flows Numerical simulation principle and CFD setting ANSYS-Fluent, a computational fluid dynamics software based on the finite element method, is adopt to investigate the mixing performance of the micromixer.
Various inlet velocities are also set for this simulation.
Re number with corresponding inlet velocity for numnerical simulation Fluid 1 Fluid 2 Re Inlet velocity(m/s) Re Inlet velocity(m/s) 0.01 0.000292 0.001 0.0056 0.1 0.00292 0.01 0.056 1 0.0292 0.1 0.56 7 0.204 1 5.6 10 0.292 20 0.584 50 1.459 100 2.919 150 4.378 Results and discussion Mixing performance of micromixer as demonstrated by mass fraction is shown in Fig. 2.
Conclusions In this paper, a chaotic triangle three dimensional micromixer has been designed and analyzed through numerical simulation.
The results of simulation show that the shortest and longest well mixing lengths are around 300um and 1250µm at the Re number of 0.01 and 50 for Fluid 1.

The results have been compared with the simulations obtained from finite element model.
In this simulation, discharge gas is air, the temperature is set as 20°C, and the density is 1.205 kg/m3.
Conclusion The transport property of discharge gas under vacuum is investigated by adopting the combination of numerical simulation of fluid distribution, pipe flow theory and Fluent simulation design.
The best sample position obtained from experiments is 20 mm, which is in good agreement with the simulations.
Review on the commercial CFD softwares [J].

The simulation model of the power capsule Fig 5:Three-dimensional simulation model of power capsule Given the above test, we build the simulation model of the power capsule including the intake and exhaust grille, radiator, inlet volute, fan, outlet volute.
For the symmetrical arrangement of the fan, we use half model to do the simulation.
Table 3 shows the contrast between experiment’s results and the simulation’s.
Fig.6: Static nephogram of the profile of cooling system Fig.7: The velocity vector diagram of the profile of cooling system The thermal state simulation of the cooling system in the power capsule Given the validity of the simulation model, we make a thermal state simulation of the cooling system.
Evaluation of Cooling Air Duct Comprehensive Performance in Vehicle Based on CFD Analysis [J]. 2012，33（3）：50-53 [3] Bi X P, Liu X X, Zhao Y X, et al.

There are four known approaches used to solve Navier-Stokes equation: - solution of Reynolds – averaged Navier-Stokes equations (RANS) ; - direct numerical simulation (DNS), solution of Navier-Stokes unsteady-state equations without closing relations; - large eddy simulation (LES), which is based on Navier-Stokes unsteady-state equations performed with parameterization of sub grid scale eddies; - method called DES, which is a combinations of two methods : LES – in the zone of separated flow and RANS – in the zone of “smooth flow”.
The article describes influence of turbulence models on flow and temperature fields calculations in premises characterized by heat emission at test simulations.
Editorial: RANS modeling into a second century (2009) Special issue of International J. of CFD, Vol. 23, No. 4, pp. 291–293
Detached eddy simulation of flow around two wall-mounted cubes in tandem (2009) Int.
Large eddy simulation for compressible flows (2009) Springer, 276 p.

Direct Simulation Monte Carlo (DSMC) method is typical of this approach.
Since the size of model is small and the physical field is not complicated, we use the default UMFPACK solver in the film lubrication module in CFD.
Fig. 2 shows simulation results on the flat plate model.
Fig. 4 shows simulation results on the complex double-track model.
Fig.7 Contrast results of complex double-track model Summary Three simulation models were established in this study, including the flat plate model, double-track model and complex double-track model.

The cold junctions of thermal piles are put outside the cap to make it exactly at the room temperature, thus the device is very easy to calibrate and more accurate. (4) The chamber is filled with another kind of gas such as Xe or Ar to avoid the oxidizing effect produced by the commercial ones with carbon dioxide or air, and then the reliability as well as the life cycle of the heater can be increased. (5) By the results of simulation, one can see the traditional rectangular chamber can be replaced by a hemi-cylindrical one to extend both the operation range and sensitivity of the thermal convection accelerometer.
The third one is simulation and results discussion.
Simulation and Results Discussion In this section ESI-CFD+ software package is applied for simulation.
(3) By the results of simulation, one can see the traditional rectangular chamber can be replaced by a hemi-cylindrical one to extend both the operation range and sensitivity of the thermal convection accelerometer

The Research of the Application of Reactive Powder Concrete Wind Barriers of High Speed Railway Bridges Xiaolv Lua, Ri Gaob School of Civil Engineering, Beijing Jiao tong University, Beijing, China aluxiaolv520@163.com, brigao@bjtu.edu.cn Keywords: RPC; wind barriers; numerical simulation; application Abstract.
In this paper, completes the selection of preliminary Reactive Powder Concrete (RPC) wind barriers, and on the basis of the theories of the computational fluid dynamics ( CFD), relying on the model-building and analysis platform of FLUENT, 3D models of trains under crosswind with and without wind barriers are built.

Previous simulation of using oscillating flow to clean trenches has been verified and show excellent agreement with numerical and experimental results 1-3 .
Two geometries have been created and meshed for CFD calculations.
This phenomenon which results in the time effect in the removal process has been verified with the simulation.

There have been many publications in this general subject area, Most of which have focused on analyzing the forces and torques over the slipper, experimentally, analytically and via CFD[1-13].
Numerical simulation of a slipper model for water hydraulic pumps/ motors in mixed lubrication.
Numerical Simulation of Overturning Phenomenon of Axial Piston Pumps Slipper Pair.

One may realize that it is possible to incorporate computational fluid dynamics (CFD) with Eq. (1).
The history of can be calculated by CFD software and thus a variational visibility range can be obtained.
More simulations are conducted for the four scenarios.
One finds that NOG in the simulation varies from 0 to 40.
Simulation of pedestrian dynamics using a two-dimensional cellular automata.