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The CFD method is widely used to simulate the aerodynamic behavior of wind turbines.
This research tries to illuminate the problem with CFD method.
After the angles are obtained, the aerodynamic forces of wind on blades will be computed with commercial CFD code.
Conclusions The hoisting forces of one 38.5m blade are computed with CFD method.
He, Blade aerodynamic design and numerical simulation of large scale wind power generator, Wuhan University Press, Wuhan, 2009, pp.67-71

Velocity and Sludge Distribution Simulation of the Aerobic Tank of Step-Feed A/O Process Shen Zhao1, a, Xue-yi You1, b , Sheng-jun Liu 2, c , Yu Huang2, d , Feng Shi2, e and Hong-bo Lu2,f 1School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China 2Municipal Engineering Design Institute Co., Ltd. of Northwest China, Lanzhou 730000, China atowntoonzhaoshen@hotmail.com, bxyyou@tju.edu.cn, cxbylsj@163.com, dxbyhuangyu@163.com, exbysf@163.com, fxbylhb@163.com Keywords: CFD; aerobic tank; velocity distribution; sludge distribution Abstract.
Introduction The Computational Fluid Dynamics (CFD), an important branch of fluid mechanics, obtains the flow field information by solving the continuous and momentum equations of fluid.
In this study, based on the CFD technology, the model of the aerobic tank of the step-feed A/O process was built.
Gambit software was applied to the meshing of the models and the grid independence was tested before the simulation.
Influence of the aeration on the sludge distribution at horizonal planes (a) surface layer; (b) middle layer; (c) bottom layer (Left for the simulation without aeration and right for the simulation with aeration) Conclusions The wastewater-sludge flow and the aeration process were simulated by the two-phase model and the discrete phase model.

Large Eddy Simulation (LES) is used to solve the governing equations in FDS.
These three parameters cannot be used directly in most practical simulations.
The mixture fraction-based combustion model is used in this simulation to predict the CO concentration.
According to the numerical simulation results, mode3 shows some advantages in the smoke control.
Hamer, et al.: Turbulence statistics in a fire room model by large eddy simulation.

Through the analysis of the flow field, the unsuitable position of the nozzle was located, and the methods which combine CAD / CAM / CFD was applicated to optimize the structure of the nozzle.
Precisely because of these advantages of numerical simulation, it is gradually becoming a kind of powerful tool which is used to the research of machinery related to fluid.
With the methods combine of simulation and experients.
First of all, make use of PRO / E for solid modeling of the nozzle, and then use the pre-processor Gambit FLUENT to mesh, making use of experimental data to provide boundary conditions in simulation at last.
FLUENT taking advantage of three-dimensional compressible fluid turbulence model for the nozzle flow field numerical simulation by CFD software.By taking the three-dimensional compressible fluid turbulence model, the CFD software FLUENT takes the numerical simulation of the nozzle flow field.

The external flow field of the model was analyzed by CFD module of ANASYS-FLOTRAN.
INTRODUCTION Computational fluid dynamics (CFD) is a kind of analysis which is done by computer numerical simulation and image display about the system that includes physical phenomena of fluid flow.
Numerical simulation of flow-field of 3D car bodies using CFD [J].
Numerical Simulations and Analysis on External Flow Field of Van Body Truck Based on ANSYS CFD.
The Simulation of Air Dynamic of Bus [J].

Moreover, numerical simulations in design condition and two different operation conditions were performed to validate this design with comercial Computational Fluid Dynamics (CFD) software ANSYS FLUENT 14.5.
Numerical simulations In order to validate the design proposal of the cooler, the comercial CFD software ANSYS FLUENT 14.5 was used to perform numerical simulation for the cooler in design and operation cases.
CFD model and mesh.To optimize the numerical calculation and reduce the CPU time, some simplifications were adopted to obtain the CFD model of the cooler.
Simulation results.
Wang, Proficient in CFD simulation and actual cases., 2011.

Investigation of ThermoelectricPowerGeneration Module on Waste Heat Recoveryin a Downdraft Gasifier Ming-YungWang1,a,Ching-PoLin1,b,and Hsiao-Kang Ma1,c 1Department of Mechanical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617 Taiwan(R.O.C) amill1913@gmail.com, bgene50532@gmail.com,cskma@ntu.edu.tw Keywords:Thermoelectric generator, Biomass, Gasification, CFD Simulation.
The simulation model of downdraft gasifierisperformed by using the Fire Dynamics Simulator (FDS),it’s appropriate for the low-speed, thermally-driven flow simulation with an emphasis on incomplete combustion process.The results demonstrate thatthe simulation temperature of catalyst reactor surface is around 200℃~300℃ which is used toconvert heat into electricity by TEG module.
McGrattan et al. [4-5] developed a three-dimensional CFD model of Fire Dynamics Simulator (FDS) to simulate the scene of fire.
Fig. 4shows thecomparison of experimental and simulation results with temperature at different position in gasifier.The trend of temperature profile is similar to experimental results,the simulation results are higher than experimental results because the simulation model is assumed asan adiabatic condition which indicates no heat dissipation in simulation process. .
Conclusions In this study, the application of FDS model on gasification simulation can effectivelypredict temperature profile of IDGS.

This work has been done a study of the behavior of underground cable based on using a forecasting model that uses the techniques of cfd.
The first phase of the work was making computational model with a cfd software; the second step was the validation of the cfd model by a comparison with the data measured in a experimental model made in laboratory.
The materials considered in the simulations had the following physical properties: Table 1 - Characteristics of the materials used in the simulations.
For brevity we show a small but significant part of the test results comparison which allowed us to validate the CFD model compared to the experimental apparatus.
A mesh geometry was chosen for the simulations which represented an excavation carried out "in a good workmanlike manner."

Κ-ω SST turbulence model was used for the airflow simulations.
Table 1 Operating conditions used for the numerical simulations.
Aerodynamic simulation of runback ice accretion.
Mortensen, CFD simulations of an airfoil with leading edge ice accretion, in Department of mechanical engineering.
[10] http://www.newmerical.com/index.php/products/fensap-ice-cfd-software/

In this paper, an analytical model was developed for a 24-story high-rise public building and CFD was adopted for its numerical analysis.
CFD simulation results for steady condition: model building pressure distribution (z=-5.4m, elevator on the first floor) (a) Exterior window gap flow rate on each floor (b) Elevator landing door gap flow rate on each floor Fig.4.
CFD simulation results for steady condition: gap flow rate.
CFD simulation results for unsteady condition: pressure distribution. t=1.18s, 8.86s, 27.82s, 37.24s were chosen for analysis.
CFD simulation results for unsteady and steady conditions: gap flow rate.