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In this study, the commercial CFD package FLUENT 6.3 was used for analysis.
The Computational fluid dynamics (CFD) has been used in the last few decades to devise solutions and gain insight of the flow inside the mixing tank and CFD together with experimental validation has been able to improve the design of several reactor systems.
Hence CFD has been chosen in helping us to understand the flow within the blade passage of the distributor.
The simulation approach was based on the literature providing the data about blade design and the results were compared as a validation of the simulation results.
Contour 1-D divergent flow with varying cross-section Results and Discussion The simulation of the 2-D divergent blade began with simulation of a simplest geometry with only 1-D divergent.

And the methods of computational fluid dynamics (CFD) numerical simulate were used to research the accuracy of the turbine flow meter in the same conditions.
Three-dimensional Simulation Model of the Sensor.
Grid division is a key part of the simulation process.
Numerical Simulation of the Sensor.
Experimental results and simulation results are in good agreement.

Keywords: gas explosion; dump vessel vented; CFD; maximum pressure Abstract.
The CFD model used provided a reasonable agreement with the experimental results.
Numerical simulation.
Calculation domain and simulation conditions set-up.
Simulation results and discussion.

With the thought of CFD and the computer simulation we can analyze the static and dynamic characteristics of the jet easily and efficiently[1,2].
Numerical solution Using the CFD software FLUENT to solve the transient mass and momentum conservation equations and RANS equation.
Comparing the data of simulation results with the measured data ,we can found that the relative error of the results obtained by CFD simulation is less than 5%, simulation precision is satisfactory .This also shows that the effectiveness of the CFD simulation.
A Study of High Pressure Waterjet Characteristics by CFD Simulation [J].
Three-Dimensional CFD Simulation of Two-Phase Flow Inside the Abrasive Water Jet Cutting Head [J].

The present work employs the EMMS/bubbling model [11] for CFD simulations of a fluidized bed of Geldart-D particles.
The parameters and values used in CFD simulations are summarized in Table 1.
Properties of the particles and beds used in the simulations.
For numerical simulation in CFD, MFIX 2015 was used, which is an open source code and allows the insertion of drag models in the file "usr_drag.f".
The Table 1 shows the values used for simulation, and obtaining Hd.

CFD modeling of the fast pyrolysis of coal in cold flow fluidized bed Anning Zhou 1,a, Tieshuan Zhang 1,b, Xiubin Ren 1,c, Lizhen Zheng1,d 1School of Chemistry and Chemical Engineering, Xi’An University of Science and Technology, xi’an710054, China azhouanning2004@yahoo.com.cn, bshuan.2008@yahoo.com.cn, crenxb@xust.edu.cn Keywords: CFD, Gas-solid flow, Drag model Abstract.
On the basis of the cold test data, the CFD model has been built.
In the simulation, the numerical method for the solution is the finite volume method.
CFD modeling of a countercurrent staged fluidized bed, 2008(137):664-676
[8] Tsuji, Y., Kawaguchi, T. and Tanaka, T., Discrete particle simulation of two-dimensional fluidized bed.

On this basis, rectangular and triangular type was numerically simulated with the CFD software Fluent, DPM model, then the flow field configuration, velocity magnitude, pressure drop through the filter medium and the distribution of the particles were obtained.
Then, the simulation results were analyzed and the conclusion was achieved that was under the same operation condition and porous parameters.
Take advantage of the CFD (Computational Fluid Dynamics) software fluent, discrete particle tracking model, and simplified the rotary disc filter by porous medium boundary condition, numerical simulation the two types which are rectangular and triangular filter disc.
Simulation results The two-dimensional physical model of rectangular and triangular filter disc in Fig.3 was simulated; Fig.4 is the contours of static pressure of the two types at the same boundary condition and porous parameters.
[7] Gao Xiaoyan:The structure and properties of electronspun fiber/nonwoven composite filters and CFD simulation, Dissertation in Soochow University, 2009 (In Chinese)

However, the extrapolation method requiring plenty of data was investigated based on the CFD results for the reason of low cost and short period.
Influence of computational grids convergence and turbulent models were investigated during the process of simulation.
However, the extrapolation method requiring plenty of data was investigated based on the CFD results for the reason of low cost and short period.
The governing equations are . (1) Influence of turbulent models and computational grids convergence were investigated during the process of simulation.
System Simulation Technology & Application(Volume 13), 2011

Simulation of Urea-SCR Catalytic Converter for Diesel Engine Qian Wang, Xiaojing Han, Ping Qi and Jing Wang College of Energy and Power Engineering,Jiangsu Univ,Zhenjiang,Jiangsu, China email:yantaihanxiao@163.com Key words: Diesel engine; Urea-SCR; NOX emissions; Simulation Abstract: A three-dimensional model of a diesel Urea-SCR（Selective Catalytic Reduction）catalytic converter system was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics.
In this paper, a 3D model of a diesel Urea-SCR catalytic converter was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics.
The CFD model Mesh description and boundary conditions.
The 3D geometry and meshes of the Urea-SCR catalytic converter is built for the CFD simulation, as shown in Fig. 3.
The simulation and further optimization for diesel Urea-SCR catalytic converter is made in steady-state conditions.

Numerical modeling, particularly the Computational Fluid Dynamics (CFD)simulation has been shown as the more cost-effective approach than experimental measurements to facilitate the investigation into these complex in-cylinder processes.
It is important that further improvement and refinement are made to the reduction techniques to cope with larger mechanisms in line with the current trend of development in this area for successful CFD simulations.
CFD Simulation Here, OpenFOAM software package was utilized to study the spray combustion phenomena within a constant-volume bomb.
The operating conditions applied in the simulation are demonstrated in Table 2.
Table 2.Operating conditions applied in the simulation [11].