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CFD Analysis of Wind Loads on Permeable Low-Rise Structures Isam Janajreh Masdar Institute of Science and Technology, Abu Dhabi, UAE, P.O.Box 54224 ijanajreh@masdar.ac.ae Keywords: Computational Fluid Dynamics (CFD), Permeable structure, Darcy equation.
Numerical simulation (CFD) provides an attractive parametric study and offers a richer, higher resolution data output.
A simple wind tunnel simulation for low-rise structures reveals large discrepancies.
The 3D simulation is used to back up the obtained 2D pressure map.
Fig. 4: Displacement and out of the plane bending moment under L-ASCE and R-CFD code values Conclusion.

The paper presents numerical prediction of cavitation erosion on a Francis turbine runner using CFD code.
In recent years, due to the rapid development in CFD technology and computer hardware, numerical cavitating flow simulations have been applied to hydraulic turbine.
The profile and the energy of the pressure waves emitted during cavity collapse were evaluated by numerical simulation.
OpenFOAM is an object-oriented C++ library of classes and routines of use for writing CFD codes.
Simulation results have shown that the cavitation erosion in Francis turbine are well predicted qualitatively.

The Numerical Simulation of Pure-oil Lubrication Journal Bearing Cai Lin1,a, Jinli Wang2,b, Hongtao Zheng1,c 1 College of Power Science and Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, P.R.
a cailin@hrbeu.edu.cn, bwangjinli@hrbeu.edu.cn, czhenghongtao@hrbeu.edu.cn Keywords: Journal bearing CFD viscosity-temperature effect Abstract.
The simulation of journal bearing oil film flow field is done using CFD, and the viscosity-temperature and cavitation effect have been consider.
Papadopoulos CFD analysis of journal bearing hydrodynamic lubrication by Binghamlubricant.
[4] Jiang Li, Hao shengChen, Evaluation on Applicability of Reynolds Equation for Squared Transverse Roughness Compared to CFD[J].

During virtual simulation (with CFD Computational Fluid Dynamics software) there were conducted similar to real experiments with the use of scanned rotors (with 3D scanner) and same environment conditions.
During virtual simulation with CFD calculation there were conducted equivalent to real experiments, where scanned with 3D scanner rotors and same environment conditions [18] were used.
Virtual experiments for lifting force determination and gap distance optimization were conducted with CFD software SolidWorks Flow Simulation 2012 [20] on simplified quadrotor helicopter model with scanned models of 10 in rotors.
Optimal distance between rotors for creating 3 N lifting force Conclusion This paper describes comparison between virtual simulation of quadrocopter and real experiments and shows that CFD results are trustworthy.
CFD results are proved by real experiments.

Simulation and analysis of heat transfer process in internal recycle double skin facades(DSF) of the established standard model were carried out by computational fluid dynamics(CFD).
Most DSF studies now are based on CFD simulation.
Conclusions Through the simulation and analysis of the DSF using CFD method, the conclusions can be get as follows: (1) Relatively stable continuous flow field can be obtained through DSF.
Proceedings of Building Simulation.
"Three-dimensional simulation with a CFD tool of the airflow phenomena in single floor double-skin facade equipped with a venetian blind."

Numerical simulations show the best observation direction is the 90 o angle between the main optics axis and the horizontal line in which the air velocity distribution is the least.
In the past，Computational Fluid Dynamic (CFD) could be used only for simple geometries and flows with limited turbulent content.
Moreover, the CFD software Ansys CFX directly adopts the Solidworks kernel geometry eliminating errors induced by geometry translations.
With the CFD software calculations, the effects of varying the telescope elevation fromα=80 o toα =120 o on the velocity are captured in Fig. 3.
In this article, the natural convection has been analyzed by using the CFD software to evaluate the temperature distribution of air around telescope.

Effect of Blade Inclining Angle on Internal Characteristic of Hydraulic Retarder Hui XIAO 1,a , Yaxu CHU 2,b 1,2Automotive and Architectural Engineering College of Beihua University,Jilin 132013,China a983136165@qq.com bcyx-1964@sina.com Keywords: Hydrodynamic retarder; Vane degree; Turbulent flow; Numerical simulation Abstract: Based on CFD software platform the numerical simulation of internal characteristic of hydraulic retarder was performed by moving mesh method with the RNG turbulence model and the SIMPLEC algorithm simultaneously, the internal characteristics of velocity and pressure distribution were analyzed through the numerical simulation and post-processing.
Comparing the calculation braking torque with the simulation results.
The research in the paper uses CFD to figure out the influence of different inclining angles on the performance of hydraulic retarder, finally to select the best parameters.
CFD Numerical Simulation Calculating fluid dynamics, shortened as CFD, analyses some physical phenomenon like fluid flowing and heat conducting.
Commercial Vehicle, (2007) (1);99 [2] Liu Zenggang, Zhang Bingrong and Li Mo, Discussion on the Development and Regulations of Automobile Retarder[J].Urban Vehicle,(2006) (2): 51-53 [3] Huang Jungang, Li Changyou and Tong Jun, Analysis of Key Factors Influencing on the Braking Torque of Hydraulic Retarder[J].Machine Tool & Hydraulics, (2010), 38(15): 77—80 [4] Wang Feng, Yan Qingdong and Ma Yue, Prediction and Analysis on the Performance of Hydraulic Retarder based on CFD Technology[J].Journal of System Simulation, (2007),19(6): 1390—1392 [5] He Ren, Yan Jun and Lu Ming, Three-Dimensional Numerical Simulation and Performance Prediction of Hydraulic Retarder[J].Chinese Journal of Automotive Engineering, (2009), 31(3): 250—252, 266 [6] Li Xuesong, Research on the Parameter Optimization Method of Automotive Hydraulic Retarder Based on Unsteady Flow Field Analysis[D].Changchun, Jilin University, (2010) [7] Yan Jun and He Ren, analysis on the performance of Hydraulic Retarder with Different

Some studies on the fluid flow in the gap and the simulations were conducted for die-sinking EDM [3]-[5].
The CFD simulations presented in this study are performed with the commercial STAR-CD and STAR-CCM+.
The simulations of fluid flow were done by a finite volume method as a three dimensional, unsteady laminar and turbulent flow [6].
Comparison of machined surface and analyzed result under various workpiece thickness c In order to verify the CFD simulation results, wire EDM experiments were also carried out under the same jet conditions as in the CFD simulation.
[4] Han F, Kunieda M, Sendai T, Imai Y, High precision simulation of WEDM using parametric programming, Ann.

Ilias Oraifige b 1University of Derby, Markeaton St, Derby, United Kingdom a100237645@unimail.derby.ac.uk, d.harmanto@derby.ac.uk and i.oraifige@derby.ac.uk Keywords: CFD,Cars overtaking, Drag coefficient, simulation, truck, SolidWorks, aerodynamics Abstract.
The investigation uses SolidWorks Flow simulation software to conduct CFD [1].
The paper will model few numbers of vehicles such as a truck and any selection of normal car using SolidWorks as CAD basis and SolidWorks Flow simulation as the CFD tools.
The simulation also did produce drag coefficient value.
This may be due to the fact that the truck has no effect on the car and the simulation is still not ignoring this fact as it includes every area in the simulation.

Furthermore, some suggestions are put forward through these simulation results.
In order to obtain the boundary conditions of CFD analysis, 1-D engine cycle simulation model at the rated speed of 6000rpm is built to calculate the crank angle-varying mass flow rate and gas temperature at inlet and outlet of exhaust manifold.
Fig. 1 shows a finite volume mesh model for CFD analysis.
The CFD analysis of external flow field is calculated by the simulation of bench test of steady flow field.
The simulation focuses on surfaces in contact with the outer surfaces of exhaust manifold, where we refine during the meshing process.