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This paper is trying to use the mostly common used CFD code—FLUENT to model the catalytic decomposition of HTP in silver packed catalyst bed, to aid the design of the catalyst bed.
Before simulating it in the CFD code, some assumptions should be made to make the simulation soluble. a) The impurity of the solution is not considered. b) The silver catalytic bed is isotropic and the axial heat conduction is ignored. c) The products of the reaction are only oxygen and water-vapor.
Inputs for CFD simulations are summarized in table 1.
Fig. 2 2-D structure of catalyst bed Table 1 Inputs for CFD simulations Mass flow rate[kg/s] 0.002 HTP grade, % weight 90% Inlet temperature[ K] 300 Operating pressure[bar] 3 Porosity 0.5 Chamber diameter[mm] 10 Length of porous medium[mm] 25 Results and Discussions Assuming the reaction occurs adiabatically, a basic case is made to give the micro impression to understand the distribution of the flow field.
The ability of the CFD code as an aided design tool of catalyst bed should be further explored.

Computer simulation of icing on NACA0015 blade airfoil for vertical axis wind turbine Yan Li1,a, Fang Feng2,b, Shengmao Li1,c, Wenqiang Tian1,d 1 Engineering College, Northeast Agricultural University, China 2College of Science, Northeast Agricultural University, China aly_neau@yahoo.com.cn, b fengfang1026@yahoo.com.cn, clsmkey@163.com dtwq888666@163.com Keywords: Vertical axis wind turbine; icing; computer simulation; blade airfoil; CFD Abstract.
To simulate the situation of icing, computer simulations were carried out on a NACA0015 airfoil which is often used for vertical axis wind turbine.
Based on the theoretical foundation of CFD, computer simulations were carried out on a NACA0015 airfoil which is often used for vertical axis wind turbine.
Numerical Simulation Methods Mathematical Models The Reynolds and Mach number are so low that the air flowing through the blade can be considered as incompressible.
[4] Shengmao Li, Yan Li: Numerical simulation on the icing on a blade aerofoil used for vertical axis wind turbine, Journal of Chinese Society of Power Engineering, 2011, Vol. 31-3(2010): p.214-219.

Clay materials extrusion process resulting field simulation and analysis Baiqing Zhang a, Xianqiang Zhao b, Jiabo He c and Guoxing Tang d The Electromechanical College of Jingdezhen Ceramic Institute, China azbqxjq168@sina.com, bzxq8188@163.com, cwo19970701@163.com, dguoxingtang68@126.com Keywords: de-airing pug mill, numerical simulation, ceramic paste Abstract.
Numerical simulation by CFD to analyze the mechanism of mud out of mud extrusion process of the velocity field in the simulation, the influence of the quality of the clay mud section the nature of materials were studied.
In this paper, using CFD simulation technology [3, 4, 5], simulate the flow field of the mud in the extrusion process in de-airing pug mill, calculate the three-dimensional laminar flow field within a continuous spiral vane based on FLUENT, be focus on discussing the speed change of the different soil moisture content of pug in spiral reamer flow field in de-airing pug mill.
Numerical simulation results and analysis The simulation we use the large-scale flow calculation software Fluent to discuss the results of simulation analysis for the mud in the post-processing in a continuous spiral vane three-dimensional flow field.
This simulation did not consider the effect of temperature.

Research Method CFD numerical simulation is used in this study to analyze the surrounding flow field of the building.
CFD has become a typical tool for analyzing internal flow field in space, air-conditioning and ventilation system.
The commonly used CFD calculation methods at present can be generally divided into three types including: DNS (Direct Numerical Simulation), LES (Large Eddy Simulation) and RANS (Reynolds Averaged Navier-Stokes) [4].
This study applies LES (Large Eddy Simulation) for discussion.
Basic assumptions of CFD numerical simulation in this study Basic Assumptions 1.

The simulation results are in good agreement with experimental results.
With the development of CFD software, more and more CFD software are utilized to optimized the design of SCR system[3-8].
In this paper, CFD modeling is used to numerically simulate the flow field and NH3 distribution of 100MW coal-fired power station.
NH3 concentration distribution of first catalyst bed inlet Comparison Between CFD and Test Results Cold experimental results are shown as tab.1 and tab.2.
Simulation results and experimental results are in good agreement.

anandakumarmanohar@gmail.com, bdharmasheelan.srec@gmail.com, celavarasan.n198@gmail.com Keywords: Convergent-Divergent Nozzle, By-pass System, Fluid Flow, CFD, Nozzle Design.
In addition to the advancement mentioned above, a new by-pass system was designed and CFD analysis was performed using AUTODESK SIMULATION CFD 2014 software.
Similarly computational simulation with same boundary conditions was carried out for three different models with by-pass system and results were obtained.
The results are obtained using AUTODESK SIMULATION CFD 2014 software.

Simulation results show that the change of cavity shape is lagging behind that of gas supply.
In this paper, CFD technology is used to investigate effect of ventilation rate on supercavitation under three typical gas-supply scenarios.
In this work, detached eddy simulation (DES) method is used as turbulence modeling.
The Physical Model and Boundary Conditions for Simulation The physical model and surface grids for simulation are shown in Fig.1.
The number of total grids used in the simulation is 1215580.

Through computer numerical calculation and image display, computational fluid dynamics (CFD) can analyze the related physical phenomena of fluid flow [4].
Fluent is currently the more popular commercial CFD software package, which has a lot of physical models, advanced numerical methods, powerful functions before and after processing, and the powerful grid support capabilities [5].
Numerical Simulation of Flow Field in Ash Hopper Collecting Process Based on Fluent Software.
Numerical Simulation of Flow Filed in ESP with Moving Electrode Type.
Alteration of flue gas distribution in the rectangular gas duct of electrostatic precipitator with CFD computation software. 2011, 5(2): 404~409

The coupling of the analytical model into the numeric simulation was realized by the shear rate tensor.
Numerical Simulation Numerical simulations of physical phenomena regarding the Fluid-Structure Interaction are topics of several research projects.
Using the explicit monolithic FSI-simulation within ANSYS CFX a bidirectional transient coupling with the ANSYS Multiphysics solver was evaluated.
The CFD- and FEA- solvers work simultaneously with force, displacement and/or thermal data shared implicitly at each timestep.
Table 3: FSI-Analysis: Infiltration process of the semi-solid AlSi7Mg0,3 into a cell of a woven fibre fabric time volume fraction `alloy´ time volume fraction `alloy´ 0 1,2 2,4 3,6 4,8 6 Results of the fluid dynamic simulations have been correlated with simulation of structural mechanics.

Paper Machine Bearing’s Temperature and Air-Velocity Optimization under Air-Oil Lubrication ZHANG Feng1,a HAN Gong-bo2,b DUAN Su-xia3,c 1Shaanxi University of Science and Technology, Xi’an, 710021, China 1Shaanxi Province Key Lab of Papermaking Technology and Special Paper Development, Xi’an, 710021, China 2Shaanxi University of Science and Technology, Xi’an, 710021, China 3Shaanxi University of Science and Technology, Xi’an, 710021, China a E-mail:zhangfeng@sust.edu.cn bE-mail:hangongbo1985@126.com cE-mail:dunasuxia@sust.edu.cn Keyword: CFD; air-oil lubrication; temperature field; velocity field Abstract:The purpose of this resarch was investigated the air-oil temperature field distribution under air-oil lubrication and oil lublubrication, meanwhile also study the air-oil lubrication effect under different air velocity inlet the bearing cavities of the high-speed paper machine dryer section.
Base on the CFD theory, the temperature field of CARB bearing outer ring and the velocity field of the bearing cavities were simulated by the FLUENT software.Result show that air-oil lubricatin can reach the same cooling effect is contras with oil lubrication in the same heat production by roller; the best air-velocity value of air-oil lubrication system is obtain for the change of temperature and pressure in bearing cavities.
With the CFD theory and technology has been widely used in temperature field and pressure field under the victory analysis and research of numerical simulation.
Temperature field simulation model Fig3.Velocity field simulation model 1.2 Initial boundary condition For bearing outer ring temperature analysis, the biggest GCV (GCV was an abbreviation for gross calorific value) roller was study [6], and the GCV was21738 w/m2.
In considering other invariable conditions, change air inlet velocity, the best air-velocity value of air-oil lubrication system is obtain for the change of temperature and pressure, so the follow velocity were numerical simulating, and numerical simulation results of bearing cavity in different air velocity as table1: Table1: Numerical simulation results of bearing cavity in different air velocity Velocity（m/s） 10 15 20 25 30 Reynolds number（Re*10-4） 0.7 1.0 1.3 1.7 2.0 Heating transmission coefficient 60 93 104 124. 144 Highest temperature（K） 572 526 510 504 499 Lowest temperature(K) 351 339 328 324 320 Inlet pressure(Kpa) 285 433 760 1125 1560 Outlet pressure(Kpa) 72 134 331 431 596 Fig6.The temperature difference and pressure difference change curves in bearing cavity The table 1 show that with the supply of air velocity to increasing, maximum and minimum temperature were continuously decreased, Temperature differences also continue to reduced; from the changes of pressure, with