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Numerical Simulated Method on Wind Environmental of outdoor Can Li1, a, Tianfu Deng2,b 1 College of Civil Engineering,Hunan University of technology,Zhuzhou 412008,china 2 Shanghai Research Institute of Building Sciences, Shanghai, 201108, China alc19992@126.com, bdengtianfu@126.com Keywords: wind environment; numerical simulation; CFD; district planning Abstract.
The steady-state three-dimensional turbulent airflow fields were analyzed by computational fluid dynamic (CFD) method for the two cases.
Compared with the model experiment, the CFD has advantages as lower cost, shorter time, and easily obtained information about the flow field, and the sensitivity analysis of the parameter change is easily, so simulation of more complicated real flow is also easily realized.
The simulation results showed good agreement with the test data[12].
Application of CFD tools for indoor and outdoor environment design.

Injector nozzle multiphase flow numerical simulation of high pressure common rail system Yan HU, Guoxiu LI School of Mechanical Electronic and Control Engineering of Beijing Jiaotong University Beijing 100044, China Keywords: Injector nozzle, multiphase flow, CFD, Structural parameters Abstract.
Three-dimensional numerical simulation of multiphase flow of mini-sac nozzles of high pressure common rail were calculated by using the computational fluid dynamics ( CFD ) method in this paper.
The three-dimensional CFD numerical simulation method supplemented by experimental validation can be a good solution to this problem, and this method has been widely applied. [1,2] The object of study is a mini-sac nozzle of high pressure common rail injector.
Conclusion Three-dimensional numerical simulation of multiphase flow of mini-sac nozzles of high pressure common rail were calculated by three-dimensional CFD software in this paper.
A CFD study of the effect of the needle movement on the cavitation pattern of diesel injectors.

Introduction The flow past a marine propeller is one of the challenging problems in Computational Fluid Dynamics (CFD).
The simulation is carried out in the commercial software STARCCM+.
Bong-Jun Chang [2] employed a finite volume CFD method in conjunction with the standard k-ε turbulence model (Launder & Spalding, 1974) for an unstructured mesh.
Fig. 4 Grid independence test for Kt and Kq Steady analysis The CFD simulation is carried out for steady case with various turbulence models as shown in Table 1.
“Application of CFD to P4119 Propeller”, 22nd ITTC Propeller RANS/Panel Method Workshop, France, 1998

The Environment Temperature Simulation Research of Gyroscope Yuan Shuaia, Wang Ya-binb National Key Laboratory of Electro-mechanics Engineering and Control, Beijing Institute of Technology, Beijing 100081, P.R.China abit_yuanshuai@163.com, bwangyabin@bit.edu.cn Keywords: Guided Gyro, Thermal analysis, FVM, CAE, CFD Abstract.
Fig. 2 CFD mesh Subpanel Fluid grid's quality requirements have some particularity.
The Gyroscope Temperature Control Device Temperature Field Simulation Calculation.
In addition, it provides the data format interface to all major CFD solvers.
The numerical simulation of temperature field[M].Chongqing.

CFD software is used for simulation of the five different models of DSF.
The skins can raise the air temperature during summer due to high temperature outside, therefore it is necessary to thoroughly design and simulate using a model with CFD simulation.
Building Simulation Wind speed contour (m/s) Temperature Contour (Kelvin) Fasad+grill & panel (Open Cavity) Fasade + Grill (Open Cavity) Ventilation Pattern (Open Cavity) Ventilation Clear (Open Cavity) Close Cavity Figure 2: Comparison of CFD simulation results in five models DSF; contours of wind speed and temperature contours, shows that the patterned facade with an open cavity is the smallest, and that the two facades grill & panels, 3.fasad air grill, 4 plain facade ventilation, 5 closed.
Results and Discussion Comparison of 'CFD’ Simulation Results Heat transfer Variations on DSF ventilation cause a different temperature condition inside the building.
CFD simulations on various types of DSF are showed different relationships between air flow in the DSF cavity and air temperature inside the building.

In this paper, steady CFD analysis were applied to different structures of double-tangent-port.
Fig. 4 Test and simulation comparison of pressure Table. 3 Test and simulation comparison of soot Operating Condition Speed [r/min] Torque [Nm] Experiment [g/kW·h] Simulation [g/kW·h] Rated Point 2200 1085 0.55 0.533 Numerical Study of Intake Ports In this chapter, the working process of the diesel engine is analyzed which aims at presenting a theoretical basis for design and improvement of intake port.
For this purpose, original port, optimized double-tangent-port, mixed-port and double-helix-port numerical simulations, swirl are carried out using commercial CFD code AVL-FIRE.
The steady simulation of intakes ports with the CFD method illustrates the excellent performance of optimized double-tangent-port, particularly when comparing with the mixed-port and double-helix-port.
Application of CFD Numerical Simulation for Intake Port Shape Design of a Diesel Engine[J].

Numerical simulation of two-phase liquid–liquid flow in a new static mixer structure Hongyan Zhang 1,a, Haihong Dong2, b 1Xi′an University of Architecture and Technology, China 2 Xi′an University of Architecture and Technology, China azhanghongyan@xauat.edu.cn, bdonghaihonga@163.com Keywords: spiral belt with changing diameter,static mixer,mixing effect,numerical simulation Abstract.
The numerical simulation method was used to investigate the mixing process of two-phase liquid–liquid flow in water treatment by a commercial CFD code,namely Fluent.The k-ε model and species transport model were established to research this project.
Fig.4 Comparison between CFD and EXPERIMENT The experimental data and CFD results are consistent.
Conclusion In the present study, advanced CFD techniques have been used as a tool for the research of a new mixer.
Three conclusions can be obtained through the research: (1) The results obtained from numerical simulations for two-phase liquid–liquid flow in HEV static mixer with Re=20000 have been compared with experiment data.Both are in good agreement,which prove that the method of numerical simulation is feasible

This study presents consisted in to simulate through computational fluid dynamics (CFD) package the operation of the Lapple cyclone.
If numerical simulations are conducted the immediate need for validation arises if the results are to be of practical use [3].
CFD is often perceived as a virtual fluids laboratory where experiments can be performed on the computer, but numerical simullation actually holds many advantages over its traditional counterpart, including: speed, cost, completeness of information, and simulation of all operating conditions.
The Yield of Pressure showed in the Fig.6, presents layer defined of the pressure in the cyclone, with maximum in the wall and minimum in the axis. 5 - Conclusions The relevant variables in the study of cyclones through the simulations using the techniques of Computational Fluid Dynamics (CFD) are compared to the experimental data of the literature [8] showing a good agreement.
The CFD techniques are a reliable and relatively inexpensive method of examining the effects of design changes on sampler performance of cyclone.

Study of Microminiature Autonomous Underwater Vehicle Hull Form Based on CFD Technique Hailong Shen1, a, Mo Du2, b and Yumin Su3, c 1,2,3 National Key Laboratory of Science and Technology on Autonomous Underwater Vehicle, Harbin Engineering University, Harbin 150001, China ashenhailong@hrbeu.edu.cn, bdumosuper@163.com, csuyumin@hrbeu.edu.cn Key words: CFD; AUV; turbulence model; mesh; resistance coefficient Abstract: Based on CFD technique, this paper discusses the applicability of different turbulence models and mesh partition method which are used to predict the hydrodynamic performance of AUV.
Application CFD to compare submarine hull forms [J].
Proceedings of the 2007 IEEE Intelligent Vehicles Symposium Istanbul, Turkey, June 13-15, 2007:938-943 [6] SHEN Hai-long,SU Yu-min, Mesh partition methods for numerical simulation of the flow fields of full form ships[J].Journal of Harbin Engineering University,Vol.29 No.11,Nov.2008:1190-1198 [7] ZHANG Nan, Nan, SHEN Hong-cui, YAO Hui-zhi.
Validation of numerical simulation on resistance and flow field of submarine and numerical optimization of submarine hull form[J].Journal of Ship Mechanic, Vol.9, No.1, Feb., 2005:1-13 [8] PAN Zi-ying et al.
Research of CFD application in engineering estimation of submarine maneuverability hydrodynamic forces [J].

Drying of Industrial Hollow Ceramic Brick: A Numerical Analysis Using CFD M.
Then, aim of this work is to predict the drying of an industrial hollow ceramic brick in an oven by CFD.
The geometry and mesh were constructed using ICEM CFD 15.0 software.
Simulation and Experimentation of Drying Ceramic Bricks (In portuguese).
Simulation and Experimentation of Red Ceramic Drying in Industrial Thermal Systems.