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Abstract: The influence of inlet structure which is the tangent and Spiral on water-coal separation in a Hydrocyclone is simulated by CFD in this paper.
The numerical simulation can provide a foundation for structural optimization design of hydrocyclone.
The simulation model is designed according to the engineering practice and national standards.
CFD Study on Inner Fluid Flow of Novel Hydrocyclone.
[7] Li Pengfei, Xu Minyi, Proficient in CFD simulation and actual cases, China Post and Press.2011.10.

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.

In CFD, and more specifically in combustion, ANN applications still constitute a novel field.
Finally, the simulation was repeated using the ANN approach.
The simulation was conducted over 3 flow-through times.
Menon: Simulations of methane - air flames using ISAT and ANN.
Hriţcu: LES Algorithm for Turbulent Reactive Flows Simulation: Proc.

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].

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.

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.

Numerical Simulation Investigation of the Air Cushion Suspension Technology Yong Yu1, a, Guoqing Zhang1,b 1 Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education， School of Aerospace Engineering, Beijing Institute of Technology, Beijing, 100081, China axyxuyong@bit.edu.cn, bzhangguoqing@bit.edu.cn Keywords: air cushion, numerical simulation, vortex, mesh Abstract.
The work condition of the air cushion suspension technology was simulated numerically based on CFD technology.
This paper would focus on the work principium of the air suspension technology, designing features and simulation examples.
Setup for Numerical Simulation Size Function and Grid Technology.
Numerical simulation.

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].

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)

Wind-Resistant Control Research for the Main Girder of Large-Span Bridge Ronggui Liu1,a, Qing Guo2,b , Dongsheng Cai3,c and Bei Chen4,d 1,2,3,4Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, 212013, China aliurg@ujs.edu.cn, bforever9guo@163.com, c441734243@qq.com,d185612021@qq.com Keywords:large-span bridge;wind-resistant design;the three component coefficients;numerical simulation;CFD Abstract.
Static wind load is one of the control loads to large-span bridges, since the complexity of the bridge cross section and the characteristics of the natural wind, use the mathematical analysis method can not accurately describe the wind effects on bridges, and to make a model for wind tunnel test is time and money costly, besides, the equipments are very complex.The development of CFD(Computational Fluid Dynamics)provides an alternative means for the physical wind tunnel test.Using numerical simulation technology has many obvious advantages: economical, flexible, free from physical model and test limits,and can easily tell the flow field characteristics on various conditions.Based on these advantages,the CFD method has been applied to engineering practice, and with the combination of wind engineering, gives birth to Computational Wind Engineering, namely Numerical Wind Tunnel Technique[4].
CFD Basic Thought and Control Equation CFD's basic thought:change the physical quantity which is continuous in the time domain and space domain to a series of finite discrete points with different values and establish algebraic equations for these discrete points then solve algebraic equations to obtain the approximate value.
Fig.1 Steel box girder’s cross-sectional images of Sutong bridge Calculation Model and the Calculation Area.If calculated with the full size model, the flow field grid number will be enormous, together with the speed to solve the turbulent solution is slow, numerical simulation of large scale model is often adopted.This paper use the model of 1:50 scale,size is showed in figure 2.
Structural Engineering Mechanics,1997.5(6):767-774 [4] Weilian Qu,Linna Liu.CFD-based Numerical Research in the Identifying of Tri-componentForce Coefficient of Bridge[J].