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Afterwards, import the data to CFD processor Gambit software, using spline curve to fit values at each section point so as to establish a smooth three-dimensional propeller surface.
Figure 3 Calculated value and test value Curve fitting comparison From figure 3 we can conclude: The calculation results and experimental results are basically identical, and the average error is about 3%.on the whole, the simulation result is good, Analyze the error causes, there is a deviation between the physical model and digital model, experimental and simulation conditions cannot be exactly same (for example, the Reynolds number and hydraulic wake).
Therefore, using CFD simulate propeller under open water can satisfy the demand of practical engineering application.
Based on the CFD duct propeller hydrodynamic performance research .
Application and research of propeller hydrodynamic performance calculation by means of CFD.

Research on performance of stern shaft mechanical seal based on FLUENT Peng LIU1, a,Zheng-lin LIU1,b,Sheng-dong Zhang1,c,Bo Qin1,d,Liang Zhao1,e 1School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China a 409682311@qq.com,b zlliu812@163.com ,cshengdong.taiji@163.com, dqb1987616@126.com ,e458378810@qq.com Keywords: mechanical seal; temperature field; pressure field; CFD Abstract.Reasonable assumptions and boundary conditions, the application of CFD method of mechanical seal ring structure analysis and thermal - structural coupling analysis，research on the temperature field and the pressure field distribution of the water film between moving and the stationary ring .
In recent years, the development of computational fluid dynamics CFD brings power to seal research.
Khonsari.Numerical Simulations of the Flow Field Aroud the Rings of Mechanical Seals [J].Journal of Tribology;2006,128(7),559-565

Computational Fluid Dynamics (CFD)-based Models Under this category, some models directly use viscosity laws in simulation and some others are based on an equivalent dynamic viscosity definition from CSM models, also called solid mechanics based dynamic viscosity [2, 16, 19, 30-51].
Multiphysics (CSM-CFD) Models There are models which use both CFD and CSM approaches to predict strains and residual stresses, along with flow characteristics: First they use a CFD approach based on the equivalent dynamic viscosity definition from CSM to predict temperature distribution and the shear stress near tool-material interface.
Xu, Solid mechanics simulation of friction stir welding process, Trans.
Micari, Meshless simulation of friction stir welding.
Wagoner, Numerical simulation of friction stir butt welding process for AA5083-H18 sheets.

SIMULATION OF SPOUTED BED USING A EULERIAN MULTIPHASE MODEL C.
The pattern of solid and gas flows in a spouted bed was numerically simulated using a CFD modeling technique.
A commercially available, control-volume-based code FLUENT 6.1 was chosen to carry out the computer simulations.
Numerical simulations have become popular in the field of dense gas-solid two-phase flows.
Many researches have been making numerical simulations of fluidized beds and spouted beds.

Numerical Simulation of Mixing Performance of Intermeshing Co-rotating Tri-screw and Twin-screw Extruders G.
In order to know the mixing performance in cross-section for PATSE, polymer melt flow field simulation and mixing simulation were conducted on PATSE with 2D model and a Carreau flow model to evaluate velocity profiles, particle trajectories, max shear rate, max stretching rate, dispersive mixing, distributive mixing, segregation scale, length of stretch, mixing efficiency with the commercial CFD package Polyflow and compared with those of twin screw extruder (TSE).
The models were simplified by using mesh superposition technology (MST) in the computational fluid dynamics (CFD) software Polyflow.
In this paper, 2D transient fluid model was used in the simulation.
The simulation parameters of this blending melts are as follows:=0.049s , =0.5, =5520[4].

Study on the Effect of Different Rear Windscreen Angles on Aerodynamic Characteristic of the Automobile HaiTao Bao Faculty of Transportation Engineering, Huaiyin Institute of Technology, Huai’an, China bht4931530@163.com Keywords: automobile; rear windscreen angle; aerodynamic characters; CFD .
Numerical simulation of external flow field around automobile has been performed to study the effect of different headstock shape on aerodynamicdrag [1].
In this numerical simulation, the effects of compressibility can be ignored because the Mach number based on the automobile velocity is relatively small.
The turbulence model constants chosen for use in this simulation are listed in table 1.
[5] Liang Jianyong, Liang Jun, Fan Shijie& Zhang Jialin：Comparison Among k-ε Turbulence Models in CFD Analysis on Flow Field Around a Car Automotive Engineering , Vol. 30 (2008) , p. 847 [6] Fluent Inc.

In this paper, computational fluid dynamic (CFD) was used to simulate the dynamic ground effect.
The dynamic simulation condition is shown in Fig. 3.
At the beginning of the simulation, the head of the UAV is 50m behind the edge of the deck, and at the ending of the simulation, the head of the UAV is 30m ahead of the edge of the deck.
The velocity of the UAV is 50m/s, simulation time is 1.6s, and time step is 0.04s.
CFD method was used to compute the unsteady aerodynamic force.

Numerical Investigation on Transmission Line Conductor Icing Xian Yi1,2, a, Hanjie Huang2 and Zhihong Zhou1,2 1State Key Laboratory of Aerodynamics, Mianyang, 621000 China 2China Aerodynamics Research and Development Center, Mianyang, 621000 China ayixian_2000@163.com Keywords: transmission line conductor, ice accretion, numerical simulation, icing wind tunnel, supercooled droplets Abstract.
A numerical method based on CFD technology for predicting ice accretion on transmission line conductor was presented in the present paper.
In this paper, a numerical method based on CFD technology for predicting conductor icing was presented.
In this paper we adopted the CFD method to carry it.
Fig. 7 Ice shape for different MVD Fig. 8 Ice shape for different LWC Fig. 9 Ice shape for different air speed Fig. 10 Ice shape for different icing time Conclusions A numerical method based on CFD technology for predicting ice accretion on transmission line conductor was presented in the paper.

Simulation and Experiment of Residence Time Distribution in Short-Contact Cyclone Reactors Zhang Yu-chun1,a, Zou Wei 2,b 1School of Agricultral and Food Engineering, Shandong University of Technology, Zibo, Shandong, 255049, China 2Metrological Research Centre, Sinopec Gas Company, Wuhan, Hubei, 430040, China azhangyuchun29@163.com, bzouwei2006@163.com Keywords: short-contact cyclone reactor, component concentration, residence time distribution, tracer method, CFD.
Numerical simulation techniques are one way of modeling for such systems.
Computational fluid dynamics (CFD) tools are becoming powerful and popular to conduct reactor design and diagnosis [4,5].
In one word, the simulated results fit the experimental data well, the error is small, it shows that the simulation method could predict the residence time distribution effectively, the simulated results are reliable and accurate.
Contours of the component concentrations on different planes predicted by simulation.

Numerical Simulation for the Optimization of the angle of the velocity of the Hydrogen in the High Performance Hydrogen Bell-type Annealers Shunli Fang a, Shiping Jin b, Yongxiang Zhang, Suyi Huang, Wuqi Wen State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, China afshunli@gmail.com, bjsping@china.com.cn Keywords: high performance hydrogen bell-type annealers angle velocity numerical simulation Abstract.
Sun Chen [8] uses the CFD software to simulate a quarter of an annealer, while he has not consider the impact of the internal circulation fan, the result shows that most of the circulating hydrogen flow through the top flow channel, and the circulation of hydrogen volume from the convection board is very small, and with the increase of the total circulation of hydrogen, the ratio of the hydrogen flow through the top flow channel would increase, but the change is very little in the overall.
Table 1 The details of the axial angle and the tangential angle of the model Tangential angel Axial angle 0º 30º 45º 60º 90º 0º √ × × × × 30º √ √ √ √ √ 45º √ √ √ √ √ 60º √ √ √ √ √ 90º × × × × × In this simulation we use standard k-ε model to solve the turbulence equations, and because the goal of this study is the distribution of hydrogen in the inner bell, so we have not considered the energy model, and we consider the hydrogen as an ideal gas in this simulation.
On-line Numerical Simulation of Steel Coils’ Annealing Process in Bell-type Furnaces with High Performance Hydrogen.
The Instruction and Application in Engineering of CFD.