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Study on Wind Load Characteristics of a Super Tall Building Based on Numerical Simulation Lunhai.
Numerical Simulation Models and CFD Methods In this paper, the CFD software FLUNET will be utilized to simulate the three-dimensional and unsteady flow-field around the super-tall building under strong wind conditions.
Totally, about 4200000 grid elements were generated in the present simulation.
Fig.2 shows the instantaneous velocity contours predicted by the present numerical simulation.
Fig.5 shows the generalized wind forces spectra obtained by LES simulation.

Modeling and simulation play an important role to reduce these times effectively.
CFD has been successfully used for simulation of various manufacturing processes such as casting and refining [2-6] and spray forming processes [7].
Simulation can estimate the amount of ram force necessary for the extrusion operation.
Simulation model can evaluate different possible options to narrow down the experimental trials.
Thomas in Fourth International Conference on CFD in the Oil and Gas, Metallurgical & Process Industries SINTEF / NTNU Trondheim, Norway, 6-8 June 2005 [7] Spray Simulation by Udo Fritsching, Cambridge University Press, 2004 [8] S.P.

CFD: Computational Fluid Dynamics.
DES: Detached Eddy Simulation.
They examined classical BEM theory and the modified BEM as well as CFD and the BEM-CFD mixed method.
RANS simulations of transitional flow by γ model.
Introduction of a modified segregated numerical approach for efficient simulation of γ-Reθt transition model.

Erosion Behavior of Blooie Line in Gas Drilling Dongli Lv1,a, Tao Zhang2,b 1School of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500, China 2School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China alvl393@163.com, bzhangt@swpu.edu.cn, Keywords: Gas drilling, Blooie line, Erosion, CFD, Erosion model.
Computational Fluid Dynamics (CFD) technology is adopted to solve the flow field in the bend pipe and the erosion laws of the pipeline wall are predicted coupling material erosion model.
CFD model There are three steps to simulate the erosion behavior of rock fragments entrained by the gas flow impacting the solid wall: CFD simulation of the gas flow field, the particle trajectory tracking and the erosion rate of the solid wall calculation.
In the step of the flow field simulation, the pipe flow distribution can be obtained by solving the Reynolds Averaged NS equation (RANS) and the closed turbulence model.
In the simulation of turbulent flow with a strong rotation, RNG turbulent model has higher precision.

The numerical simulation of the vehicle was completed based on the theory of the aerodynamics.
Because of the cost and conditions in testing, recently, more attention is paid to CFD.
Computational Fluid Dynamics (CFD) is an attractive approach as it can provide a large amount of data and detailed information on the flow field.
Two vehicle-dynamics simulations were conducted for transient crosswind conditions.
Simulation Research on Automotive Aerodynamic Characteristics during the Overtaking Process[J].

., Urumqi 830000, China 2Department of Thermal Engineering, Tsinghua University, Beijing 100084, China alijingji11@mails.tsinghua.edu.cn, byhr@mail.tsinghua.edu.cn Keywords: SCR, SNCR, CFD, 300MWe, CFB Abstract.
By employing the CFD method, the different urea distributions inside the cyclone are illustrated and the layout of 10 nozzles for each cyclone is optimized to the outer side of cyclone inlet.
Therefore, the Computational Fluid Dynamics (CFD) method is employed to optimize the parameters mentioned above.
Parts of the CFD calculation conditions are summarized in Table 4.
There are also several different simulation cases, but we only take these two typical ones as an example here.

According to the characteristics of the laboratory, for the condition of using air conditioning that is falling to the ground pattern to assist radiator to heat, use CFD to simulate the airflow organization and thermal environment in laboratory.
By the research methods of combining CFD numerical simulation with on-site testing, a study is made on velocity field, temperature field and thermal comfort in the laboratory in winter.
(5)In this simulation, we use normal double mathematical equation to simulate[2].
Boundary conditon of wall Item Wall Window Roof Floor Door West East South North T(K) 287.97 Adiabatic Adiabatic 287.14 285.5 Adiabatic Adiabatic 287.14 Simulation and Analysis of Thermal Environment Simulation and Analysis of Temperature Field In order to compare with actual measurement data, the boundary conditions of simulation is measured practically [3].
Simulation date is 16/12/2010.We turn on the air conditioner at 1 p.m., discuss the change of temperature in seven minutes.

The analysis is carried out using CFD software using k-ε turbulence model.
Different widths had been investigated for different inlet volume flow rates by numerical simulation.
In this article the influence of different pitches of helical tape and different tape heights ontemperature distribution are simulatedand analyzed by means of CFD software.
All of the simulation is carried out at the same inlet conditions with Reynolds number around 4.5 × 105based on the inletdiameter of the diffuser.
Diffuser Configuration Helical Tape Pitch Length, Y [mm] Helical Tape Height, H [mm] A 20 5 B 25 5 C 30 5 D 30 10 E 30 15 Computational simulation.The simulation is carried out using Numeca Fine/Open v.2.12-2 applying standard k-ε model.

Numerical Simulation of Unsteady Aerodynamic Loads over an Aerofoil in Transonic Flow Yu Qian1, a, JunLi Yang1,b XiaoJun Xiang1,c and MingQiang Chen1,d 1Civil Aviation Flight University of China, Guanghan Sichuan 618307, China aqianyucafuc@hotmail.com, byjl_tom@163.com, cxj_xiang@126.com,dmq_chen@126.com Keywords: numerical simulation, unsteady flow, hysteresis effect, hysteresis loop Abstract.
Generally, there are three traditional approaches to determine the stability and control characteristics: flight testing, wind-tunnel testing and Computational Fluid Dynamics (CFD).
A reasonable compromise between testing procedures and semi-empirical approaches is CFD, which represents the state of the art in modeling non-linear flow physics.
CFD solvers have reached a level of robustness and maturity to allow routine use on relatively inexpensive computer clusters.
Badcock, Computation of Dynamic Derivatives Using CFD.AIAA paper.

In fact, to get an optimum parameter experimentally is a very tedious for iterance pulse tube refrigerator job, so that the CFD approach gives a better solution.
In general, pulse tube refrigerator problems are highly non-linear and simulation takes long timing and high computation cost.
Neural network with three layers Conclusions A numerical approach of modelling and simulation has been presented in this work to estimate performance of the ITPTR.
An ANN-based process model was developed using results from the numerical simulations for the COP of the pulse tube refrigerator.
Sarangi, Influence of Porosity on the Performance of a Pulse Tube Refrigerator: A CFD Study.