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The range of Re for CFD simulations was 2738≦Re≦10269 and that for lift and drag study was 70512≦Re≦101319.
Results and Discussion Validation of NACA 643-218 airfoil standard CFD model.
The CFD results are compared with the published data from Abbot et al. [10] in order to validate the current work.
As can be seen in Fig. 2, a good agreement between the CFD results and published data is achieved.
CD were obtained from simulations.

The CFD results allow a better understanding of flow behaviour leading to the design of more efficient devices.
Comparison of the CFD results with previously obtained experimental data shows a satisfactory agreement.
The aim of our study is to develop a computational fluid dynamics (CFD) model of an HME device (Fig 1).
Computer-based simulations provide a better understanding of flow behaviour leading to the design of more efficient devices.
The CFD Model Our CFD model simulates the flow, heat and moisture transport inside the HME.

Keywords:homogenizing valve; homogenization; numerical simulation; computational fluid dynamics Abstract.
Numerical investigations on flow and pressure fields within a kind of new type homogenizing valve have been conducted using computational fluid dynamics (CFD) software.
The study indicates that the new type homogenizing valve can be modeled by CFD and detailed information on high speed flow is available.
To obtain estimates of such data, numerical simulations are required.
Visualization of the flow patterns in a high-pressure homogenising valve using a CFD package.

Simulation of 3-D Unsteady Flows in a Tubular Hydro-Turbine on DES Zhenyu OUYANG 1, a, Lixiang ZHANG 2, b 1,2 Faculty of Civil Engineering, Kunming University of Science and Technology, Kunming, 650500,China a15912402706@163.com, bzlxzcc@126.com Keywords: Tubular Hydro-Turbine; computational fluid dynamics (CFD); 3D unsteady turbulences; detached eddy simulation(DES); numerical simulation Abstract.
The vortex model is picked with detached eddy simulation for the unsteady turbulent field calculations, in order to obtain the transient characteristics of the turbine turbulent flow.
Due to the higher efficiency of the method of calculation of RANS, it is widely used in practical engineering , but its drawback is that the rotation effect on the turbulent flow is difficult to reflect; Large Eddy Simulation CFD method is currently a hot research and application[3-4], and for the rotation of the turbulence it has better adaptability but also occupies a larger computing resources; DES method is integrated with the advantages of both, and with a better application[5].
Nanoparticle Transportation and Brownian Diffusion in Planar Jet Flow via Large Eddy Simulation [J].
Francis turbine fine three- dimensional unsteady flow separation eddy simulation model [J].

Computational fluid dynamics (CFD) is a numerical calculation method.
However, there is no research on the application of CFD methods to simulate the temperature field of milling roller.
Numerical simulation Geometric modeling and mesh generation.
Established simulation model by CFD pre-processing software GAMBIT combined with dimensions was showed in figure 1, then meshing in the calculation area was showed in figure 2.
[2] Hao Feilin, Shen Mingwei, Zhang Ya.3-D Steady Simulation of Temperature Pattern Inside Single Plastic Greenhouse Using CFD.

According to the actual operating parameters of tundish in a steel mill, the flow pattern and temperature distribution of molten steel in tundish were studied by CFD and heat transfer calculation method.
Using CFD and heat transfer calculation method, the effect of parapet hole height on molten steel flow and temperature distribution were studied.
Chen, et al.: Physical simulation on gas curtain of single flow tundish, Refractories & Line. 38(5) (2013) 11-17
Duan: The numerical simulation of continuous casting tundish inclusions behavior, World Iron & Steel. (4) (2014) 21-26
Lei, et al.: Numerical simulation on tundish induction heating, Research on iron & steel. 42(3) (2014) 20-25

Numerical simulation of the effecion of inlet velocity in GaN growth by MOCVD Dongsheng Peng*, Zhigang Chen, Congcong Tan Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, China E-mail:* pengdongsheng@163.com Keywords: Numerical simulation, Inlet velocity, GaN, MOCVD Abstract.
Based on the simulation results, discussion is presented in this paper to offer the possibility of better control of the GaN film growth process and to ultimately lead to an optimization of the process.
Previous studies on the temperature in MOCVD reactor chamber focused on the simulations of parameters such as the gas flow in the reactor and the shape of the reactor [5,6].Computational fluid dynamics (CFD) simulation is considered as a significant approach to predict the GaN film growth rate and to examine the dependence on various critical parameters.
CFD simulations, considering gas-phase and surface chemical reactions, were carried out using the commercial software Fluent, based on a finite-volume approach.
Conclusions The CFD has been used to simulate a two dimensional mode of GaN deposition in a vertical MOCVD reactor.

In this study, simulation analysis to the automotive air conditioning absorption cold source, the vehicle speed and nozzles are proceeding.
In this study, CFD simulation for automotive air conditioning absorption cold source simulation is carried out, and the contrast of flow field and concentration distribution in packing-absorber with non-packing absorber lays the foundation for the key technical issues and its practical application of absorption cold source for automotives.
Simulation Model.
AutoCAD software and some CFD pre-processing software are used to draw the model and grids of the two-dimensional flow field of inner absorber.
In CFD software, unsteady-state, the implicit pressure-based solver, and k-epsilon turbulence model using two-equation model were adopted.

In recent years, with the development of the technology of CFD (computational fluid dynamics) and the operational capability of computer, the technology of numerical simulation has made great progress, which has provided feasible methods for three-dimensional flow computation of the full flow conduit.
(2) CFD numerical simulation method can be used to verify the spatial frame design rationality of the concrete volute flow conduit.
Numerical simulation of internal flow of centrifugal pump [J].
CFD simulation for two-phase flow of sediment water in volute [J].
CFD analysis of large spiral case [J].

The solution and the analysis were carried out using finite volume CFD solver FLUENT 6.2.
In this section the three turbulence models used in the numerical simulation are described briefly.
Simulation CFD Model Validation.
In order to validate the proposed CFD model and implement in the presented study, the above mentioned model had been run.
The CFD model was validated through comparison with the ISO pressure drop correlation.