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Compared simulation result with experiment result, the suitable CFD model to simulate interaction of water mist with turbulent gas jet flame was tested and selected.
CFD Simulation Simulation of gas jet flame The gas jet flame was created by the combustion of methane, injected through a nozzle in a open quiescent environment.
Results and discussion of CFD simulation Based on the experimental parameter, the interaction between water mist and gas jet flame was simulated by the CFD simulation.
Compared with the experiment result, the typical phenomenon including the extinguishment and liftoff of flame were obtained by the CFD simulation.
The process of CFD simulation shows good agreement with experimental result.

Numerical simulation on air flow field of tangential longitudinal axial combine harvester Li Yaoming1,a，Li Fang2,b 1,Jiangsu University institute of agriculture engineering, Zhenjiang 212013, China 2,Jiangsu University institute of agriculture engineering, Zhenjiang 212013, China ayml@ujs.edu.cn,blifang_smart@163.com Key words: tangential longitudinal axial, cleaning device, air flow distribution, numerical simulation Abstract: With the use and popularization of the tangential longitudinal axial combine harvester,the cleaning device of high loss rate and impurity rate continuously emerging.In order to analyses the reason of cleaning performance is low,the study for airflow field distribution of the tangential-longitudinal axial combine harvester has been carried out.Based on homogenization when Reynold continuous equation and navier-stokes equation and the renormalization group (RNG) kappa epsilon turbulence model predominate constitute a closed equations,Using CFD simulation
This paper in 4LZ-850 type tangential longitudinal axial combine harvester as the research object,Through the modeling of physical dimensions,studied the cleaning shoe air flow field distribution by CFD software.
For cleaning shoe air flow field simulation of RNG kappa epsilon turbulence model predominate.
Fig.1 Diagram of cleaning chamber cavity CFD calculation domain structure Fig.2 Diagram of cleaning chamber cavity Grid computing domain After build the 3D model ,then import into Fluent before processing software ICEM mesh.
But the simulation results shows that the airflow field of the cleaning shoe is symmetry in the width.

With the development of numerical simulation methods, computational fluid dynamic (CFD) modeling is widely used by many authors to study fully the natural ventilation process.
Asfour and Gadi [4] demonstrated the CFD is useful to predict the natural ventilation in buildings.
Gan [5] investigated the buoyancy-driven natural ventilation of buildings by CFD methods.
In this paper, the authors numerically investigated the natural ventilation in a workshop with heat sources based on CFD method.
Sketch of workshop Numerical model and simulation method.

Aerodynamic Analysis of Pickup Truck Xiaoni Qia, Jian Mengb and Yongqi Liuc School of Vehicle and Transportation, Shandong University of Technology, Zhangzhou Road 12, Zibo 255049, China abmjw@163.com, bmengjian@163.com, cyqliu@sdut.edu.cn Keywords: Pickup Truck; Aerodynamic Characteristics; Numerical Simulation; Computational Fluid Dynamic(CFD); Drag Coefficient Abstract.
The CFD software FLUENT was used to simulate flow field around a pickup truck in this paper.
Numerical simulation was taken on a 1/5th pickup truck model.
Numerical simulations on a pickup truck Mathematical model.
References [1]Al-Gami A M，Bernal L P，Khalighi B．Experimental Investigation of the Near Wake of a Pick-up Truck[C]．SAE paper 2003-01-0651 [2]Lokhande B，Sovani S，Khalighi B．Transient Simulation of the Flow Field Around a Generic Pickup Truck[C]．SAE paper 2003-01-1313 [3]Zhigang Yang，Bahram Khalighi．CFD Simulations for Flow Over Pickup Trucks[C]．SAE paper 2005-01-0547 [4]Abdullah M.Al-Garni，Luis P.Bernal，Bahram Khalighi．Experimental Investigation of the Flow Around a Generic SUV[C]．SAE paper 2004-01-0228 [5] M.

The CFD simulation results are presented in support of this concept.
The CFD simulations are run at a freestream velocity of 25 m/s, corresponding to Reynolds number of 1.06×106.
A view of the CFD simulation is shown in Fig. 2 and additional details of aircraft geometry are listed in Table 1.
In the first phase, CFD simulation is run by considering single drag-rudder at a time.
Fig.2 CFD simulation of flying-wing aircraft model with proposed drag-rudder configuration.

China aqihanbing@sina.com,bwysdm1314@163.com,cqiushi19870418@126.com, dwangjing1108@126.com,elidonglvyan@126.com Key words: Double ventilation glass, Hot channel, Heat transfer characteristics, CFD Abstract.
The structural characteristics and heat transfer characteristics of double ventilation glass with hot channel are analyzed, whose heat transfer model is set up, we simulate air distribution of double ventilation glass with hot channel using Computational Fluid Dynamics (CFD) scheme as a simulation technique.
Several theoretical studies have been conducted in numerical simulation to investigate the influencing factors of double glass curtain wall, such as flow rate of outlet[2], integrated heat transfer coefficient[3], and position of vent[4].
CFD Model Set-up Physical Model.
a） b） c） Fig.3 X axis section velocity field a)X=20mm； b)X=30mm；c)X=60mm Three-dimensional simulation of ventilation glass in the summer.

Seal System Optimization Study of an On-off Valve based on CFD Hu Xiaodong, Gong Quanshuai, Gong Lixiao, LvJiantao College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266510 huxdd@sohu.com Keywords: out-off valve; seal plate; computational fluid dynamics Abstract.
The dynamical performances of mixed gas in the out-off valve which is used in the PSA have been studied in this paper to explore the reasons of irrational failure of seal gasket with the material of Teflon and the method of CFD.
This simplification would make the actual flow rate higher than the simulation.
Fluid Dynamics Analysis The distribution rules of fluid dynamics performances in Out-off valves have been obtained with the procedure of modeling, meshing, boundary conditions simplification, mathematical model chosen, simulation computation and date post-processing.
CFD analysis and optimization of automotive air-conditioning duct system.

3D Numerical Simulation of Hydraulics in an Oxidation Ditch B.
Liu Institute of Hydraulic Engineering ,Xi’an University of Technology, Xi’an, China,710048 wei_wenli@126.com Keywords: hydrodynamics; CFD simulation; Oxidation ditch Abstract: A numerical simulation study of the hydrodynamics of an oxidation ditch is presented.
Bob[l] and Stamon [2] carried on numerical simulation for the two-dimensional velocity of the integrated oxidation ditch by using the κ-ε mathematical model, and analyzed the water flows in the diversion wall.
This paper focuses on the hydrodynamics of an oxidation ditch by the simulation method.
The flow field in the oxidation ditch is simulated with computational fluid dynamics (CFD).

The basic idea is to implement these geometries in computational fluid dynamics (CFD) and finally proceed to an evaluation and comparison of the simulation results, in order to select the best candidates for optimization and realization.
Since the simulation of phase transitions of CO2 requires complex calculation models and this complexity is not necessary for an initial analysis of different nozzle geometries, this article simulates using CFDs, which have already proven themselves in earlier simulations.
Fig. 1: Agglomeration Mechanisms [7] Geometries The geometries used for the CFD simulations all have identical general dimensions.
Fig. 2: Tested Geometries Simulation The CFD simulation consists of a string of operations which are undertaken in several different programs.
The reason for this is the absent solidification model in the CFD program.

Some researchers have studied the turbulence models including large eddy simulation for improving the numerical accuracy of the fluid simulation[1].
In this study, the unsteady simulations were carried out using a commercial CFD code – FLUENT, and moving mesh with a time step matched to rotaing angle of 15 degree was used for simulation the unsteady flow.
The CFD code was developed based on finite volume method which is one of the popular numerical methods[6-8].
Conclusions A numerical simulation model for 1kW wind turbine blade was constructed based on a commercial CFD code.
The developed model and simulation results have made a theoretical basis for simulation of wind turbine blade.