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The k-ε two-equation turbulence model is used in the numerical simulation by FLUENT.
The development of CFD (Computational Fluid Dynamics) offers a possible means to substitute wind tunnel test[5].
The numerical simulaton uses CFD method to simulate the ambient airflow distribution when airflow comes by bridge structure.
The k-ε two-equation turbulence model is used in the numerical simulation taking account of turbulence effect.
The Reynolds number effects of three component coefficients of bridge deck section using CFD.

Development of high accuracy CAE method makes the complex numerical simulation of aeroelastic problem become possible.
Nonlinear characteristics simulation of fluid and solid domain Nonlinear aeroelasticity mainly from aerodynamics and structure.
For aeroelastic problems using CAE analysis, CFD and CSD two systems based on the physical object itself have a big difference computational grid hence , we need to find a system interface to consist for CFD / CSD coupled.
Conclusion In this paper, based on analysis of CFD/ CSD aeroelastic theory and key technology, and author summarizes the current fluid-structure interaction simulation advantages and disadvantages, and pointed out the direction of improvement.
Numerical Simulation of Flow Induced Vibration Based on Fully Couple Fluid-Structure Interactions [R] A IAA 2004 -. 2240, 2004

With the CFD wind tunnel technique, the flutter derivatives are obtained under smooth flow with the method of forced vibration.
According to CFD, the distribution of wind velocity with and without wind screens under the design wind speed of 45.5m/s is shown in Fig. 6.
Study on the crosswind environment around the tower and deck of sea-crossing bridge by CFD[J].
Numerical wind tunnel simulation of wind loads parameters for a specially shaped bridge[J].
Numerical Simulation on Wind Flow over Step-shaped Cliff Topography with Rough Surface[J].

Flow Field Simulation of Airfoil and Analysis of Vibration Modal Based on ANSYS Pengzhiling1, a School of Mechatronic Engineering, North University of China, Taiyuan, Shanxi, 030051 pengzhiling@nuc.edu.cn Key words: airfoil, flow field simulation, modal Abstract.
By taking NACA0012 airfoil as the research object，the pressure distribution is given，based on the simulation of airfoil fieldflow field with ANSYS.
This paper uses the way of ANSYS to simulate the flow field around airfoil and airfoil vibration, and illustrate qualitatively it feasible to making flow field simulation and vibration mode analysis of airfoil by ANSYS.
Airfoil flow analyze of ANSYS ANSYS has the formidable function of Multi-physical fields functional coupling, and it can analyze on fluid, at the same time, it can put analytical results action on structure directly, which could avert some connector problems of data conversion availably.CFD and FLOTRAN in ANSYS can be used to analyze some problems about two and three dimension, and FLUID141 in ANSYS applied to CFD can used to research some fields about heat transfer or heat insulation, laminar flow or turbulence as well as compressible or incompressible and so on.

The simulation adopted a fully turbulent flow, having Reynolds number of 600 and the spinning of the cylinder at 100 RPM.
Computational Approach I.1 A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to simulate the flow field.
A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to obtain lift coefficient of the rotating cylinder.
The total of mesh is about 5000 mesh for a 2D simulation; Meshes are concentrated near to the model surfaces to increase the accuracy of the simulation Validation.
All simulation is performed with Reynolds number around 600 and the cylinder spinning at 100 RPM.

,Ltd, Hangzhou, China 2 School of Mechanical Engineering, Hangzhou Dianzi University a lijf@weichai.com Keywords: Diesel Fuel Filter; Angle of Filter; CFD Abstract.
Computational fluid dynamics method was applied to diesel filter internal flow simulation, and flow pressure lost was test to verify the simulation result.
CFD result shown that, when the filter paper angle less than 3°, the internal flow resistance of fuel filter grown rapidly.
Simulation and test of flow process in air filter [J].
[4] Zhang Hui and Wang Guoli,the filter layer simulation parameters determine.

By employing the results of the fire simulations, the fire resistance of the slab panel is assessed.
However, the current progress in computational mechanics has enabled to apply the advanced fire modelling approaches, such as the computational fluid dynamics (CFD) simulations, in connection with the numerical models of structural behaviour (both thermal and mechanical), usually based on finite element method [8, 23].
Fig. 2: Thermocouples in the CFD model [20] The results obtained by the aforementioned fire models are displayed in Figs. 3-5.
For the FDS CFD model, the temperature evolution was monitored by the thermocouples placed in the analysed fire compartment, see Fig. 2.
Smokeview, A Tool for Visualizing Fire Dynamics Simulation Data, Volume I: User's Guide.

The Simulation and Analysis on Leakage Flow Rate of Plunger Pair of Plunger Water Hydraulic Motor Ze–yin SHAN 1,a, Rui–bo YUAN 1,b* , Chao LI1,c 1Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China a799853229@qq.com, b Kmust_yrb@163.com, c528474052@ qq.com Keywords: Plunger water hydraulic motor, Plunger pair, Leakage flow rate, CFD analysis of flow field Abstract.
Theoretical calculation and simulation results of plunger pair are obtained.
CFD analysis of flow field of plunger pair Plunger pair is the key in hydraulic motor friction pair.
So the accuracy of the simulation results is very high.
Simulation study of axial piston pump with flow characteristics based on CFD[J].Chinese Hydraulics & Pneumatics, 2013, 9

A Aerodynamic Performance Research on a Wing Added Winglet REN Zhi-ni1,a , ZHU Shi-xing1,b 1Civil Aviation University of China ,Tianjing ,China arenzhini111@163.com , bsxzhu@cauc.edu.cn Key words: Winglet ; Aerodynamic benefit; CFD technology; Angle of attack Abstract: In order to reveal the science of adding winglet for Active aircraft, the paper calculates the aerodynamic efficiency of a wing added winglet using CFD technology, Aerodynamic benefit of the wing added winglet reaches the maximum when the angle of attack is 2 degree, the lift and drag reduction rate are 21.07% and 43.56% respectively.
Computational results and analysis The paper does the simulation calculation with the FLUENT uncoupled, implicit, unsteady 3D solver, the results as shown in Table 1 and Table 2.
87.217245 187.5841 3° 150.6713 87.079079 237.75038 40 200.84303 86.97036 287.81339 50 249.19419 86.521233 335.71543 Lift [N] 0° 2705.3104 -0.60409521 2704.70631 1° 2751.6728 -0.60615248 2751.06665 2° 2801.4886 -0.60849757 2800.8801 3° 2810.8514 -2.1012937 2808.7502 40 2829.6230 -3.6012281 2826.0217 50 2847.8659 -5.140641 2842.7253 Table 2 The aerodynamic calculation results of the original wing Ma Sort Attack Angle Pressure force[N] Viscous force[N] Total force[N] 0.8 Resistance [N] 0° 211.3507 66.1732041 277.523924 1° 240.1431 66.4290770 306.572147 2° 265.7991 66.5763670 332.375467 3° 294.9971 66.9135621 361.910662 40 337.8598 66.8203006 404.680101 50 378.7698 66.6881680 445.457968 Lift [N] 0° 2298.6079 -0.3007630 2298.30714 1° 2301.4518 -0.3158194 2301.13598 2° 2313.7761 -0.3364567 2313.43964 3° 2389.8596 -1.5257791 2388.33382 40 2415.4854 -2.6812813 2412.80411 50 2434.9908 -3.8311401 2431.15966 In contrast to the two kinds of aerodynamic simulation
Conclusion Using CFD can correctly solve the wing's aerodynamic efficiency.

New blade ANSYS ICEM CFD is used to generate unstructured grid.
The flow field simulation of a wind turbine can be divided into outflow field and rotational flow field.
Powers of new design blades produce from ANSYS/CFD and comparisons with original blades are shown in Table 5 and shown in Fig. 8.
Flow lines with rotor speed 630r/min and wind speed 5.5m/s produced from CFD for both models of blade are shown in Fig. 6 and Fig. 7.
Simulation of wind turbine blades pre-bending technology [J].