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Introduction Computational Fluid Dynamics (CFD) is an engineering tool that assists experimentation.
Its scope is not limited to fluid dynamics; CFD could be applied to any process which involves transport phenomena with it.
In CFD a problem is simulated in software and the transport equations associated with the problem is mathematically solved with computer assistance.
The turbulent dynamic viscosity is computed from μt = ρν ∱ν1 (6) K- Model The standard K- model was considered for this simulation.
Bartosiewicz, Zine Aidoun, “CFD-Experiments Integration in the Evaluation of Six Turbulence Models for Supersonic Ejectors Modeling” CETC-Varennes, Natural Ressources Canada, ybartosi@RNCan.gc.ca [8]C.Mohanraj, Dr.P.K.Srividhya, “CFD Simulation of 20 kW Downdraft Gasifier” International Journal of Current Engineering and Technology ISSN 2277 - 4106, Vol.3, No.1 (March 2013) [9] K.M.

Hanjalic et al. developed a CFD technique to simulate the near-wall eddy current.
As previously mentioned, CFD is an interesting and useful tool in designing of a intake manifold.
Most of manifold designs by utilizing CFD techniques were widely done by just considering only steady flow.
Beside the manifold wall of the air flow path, the boundary conditions of the flow inlet and six outlet surfaces as shown in Fig. 1 were identified by the simulation results from a cycle simulation program, “AVL Boost”.
Transient CFD techniques will be crucial to future improvement of intake manifold design.

The aim of the present investigation is to illustrate an innovative methodology based on numerical method to optimize combustion chamber geometry for retrofitting a dedicated mono-gas simulation engine using CFD package powered by Ansys workbench.
In the simulation, the working fluids are combination of air.
The TKE during suction stroke can be found out from the simulations to verify the generation of air-fuel structure inside the cylinder, as Fig 2.
The validation works through the experimental test will be carried out soon, as a proof that the performed CFD simulation has been correct and accurate.
[13] Varol, Y., et al., CFD modeling of heat transfer and fluid flow inside a pent-roof type combustion chamber using dynamic model.

Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, meshing, loads applying and equation solving.
Fig. 3 Two-dimensional simplified models of sensitive cavity Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tools used to study two dimensional and three dimensional flow fields, the simulation typically comprises modeling, loading and solving [3-4].
Select FLOTRAN CFD analysis of ANSYS software.
Conclusions ANSYS-FLOTRAN CFD software is used to calculate two-dimensional flow field distribution of different thermal wires spacing in fluidic gyroscope sensitive element.
Wang: Numerical simulation of practical engineering in ANSYS (Northwestern Polytechnical University Press, China 1999)

In order to study the specialties of wave slamming on open-piled structures, a two-dimensional regular wave tank was established based on commercial CFD software FLUENT.
In the following sections, the two-dimensional regular wave tank was established based on commercial CFD software FLUENT.
Table 1 shows the comparison results of simulation and the experiment.
Numerical Simulation of Random Wave Slamming on Structures in the Splash Zone.
Prediction of Wave-in-deck Forces on Fixed Jacket-type Structures Based on CFD Calculations.

The Ansys Fluent v.6.2 software was used to solve Reynold Average Navier-Stokes (RANS) equations, and Icem CFD as a mesh generator.
The computational fluid dynamics, as known as the CFD [1,2] has become a practical tool in the simulation of hydrodynamics of marine devices, especially propeller.
The CFD study which focused on the effect of the size of computational domain had been carried out by Zadravec, et.al [4].
The local pressure minima in Fig.4 were obtained at the simulation test for the propeller-to-rudder interaction.
Flexible CFD meshing strategy for prediction of ship resistance and propulsion performance.

Numerical Investigation on the Effect of Abrasive Property for Abrasive Flow Machining Li-feng YANG a, Chun-yan DONG b and Wei-na LIU c Department of Mechanical Engineering, Changchun University of Science and Technology, Changchun, Jilin Province 130022, China aemail:yanglf55@163.com ,bemail:dongcy03@foxmail.com, cemail:wnliu77@163.com Keywords: abrasive; volume fraction; aperture; CFD.
The simulation results show that the lower particle volume fraction may be in favour of the metal removal uniformity, but the processing time will be too long if too low fraction is selected.
The research on the AFM process of cylindrical runner by FLUENT simulation, and analyzes the different abrasive particle volume fraction machining different aperture cylindrical runner.
A study of abrasive waterjet characteristics by CFD simulation.Journal of Materials Processing Tech. 2004, Vol.153 , pp.488-493
Lim .Process modeling and CFD simulation of two-way abrasive flow machining.The International Journal of Advanced Manufacturing Technology, 2014, Vol.71(5-8), pp.1077-1086

It indicates that the DEM method may be used as a powerful tool for the simulation of the gas-solid flow.
With the development of the computer technology, the computational fluid dynamics (CFD) has developed rapidly, which provide low-cost and high efficient design method [5-7].
Generally speaking, there are two methods for gas-solid two-phase flow simulation, namely Lagrangian and Eulerian approaches.
The CFD-DEM method is used to simulate the hydrodynamic character of gas-solid flow in fluidized bed.
It is shown that with the flexibility and accuracy, the DEM-CFD is a valuable direction for the dense gas-solid flow simulation Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51006106) and the National High Technology Research and Development of China 863 Program (2006AA05A103).

ANAND3, c 1, 3 Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, India 2, Department of Automobile Engineering, PSG College of Technology, Coimbatore, India avp5830@gmail.com,bapkarthipsg@gmail.com, canandachu@nitt.edu Keywords: PEM Fuel Cell, flow channel, CFD modelling, H2, H2O ABSTRACT As fossil fuels are becoming less reliable and more costly, the Proton Exchange Membrane Fuel Cell (PEMFC) is emerging as the primary candidate to replace the stationary and transport applications.
In this study numerical simulation on PEMFC is done by commercially available Computational Fluid Dynamics (CFD) software.
MODEL DEVELOPMENT In this paper a three-dimensional model of a serpentine flow channel design with channel to rib configurations on (L:C) - 2 x 2 has been developed by using commercially available Computational Fluid Dynamics (CFD) software to analyse the electrochemistry and transport phenomena of the reactants and products inside the fuel cell.
In order to solve the myriad of equations associated with a fuel cell simulation, the entire cell is divided into a finite number of discreet volume elements or computational cells.
CFD models for analysis and design of PEM Fuel Cells, Nova Science publishers, Inc.; 2008

The Reynolds Averaged Navier Stokes equations is solved by a commercial CFD program, FLUENT.
The commercial CFD program-Fluent is widely used to calculate fluid flow and heat transfer problem.
Other grid numbers are sent according to mesh quality and simulation time.
The velocity magnitude can be estimated by primary simulation.
A primary simulation of seal with 50% accentricity was conducted.