The Influence of the Convective Terms Discretization Scheme on the Simulation Results of Architectural Numerical Wind Tunnel

2012 ◽  
Vol 204-208 ◽  
pp. 4884-4887
Author(s):  
Jian Feng Wu ◽  
Cai Hua Wang ◽  
Chang Li Song
Keyword(s):  
Numerical Simulation ◽  
Wind Tunnel ◽  
Building Structures ◽  
Discretization Scheme ◽  
Shape Coefficient ◽  
Fluent Software ◽  
Actual Operation ◽  
Simulation Results ◽  
Load Shape ◽  
Numerical Wind Tunnel Method

The numerical simulation of construction is to obtain the desired accuracy. It depends on the theoretical basis of the calculator and selection of the various important factors in the actual operation. For this problem, this paper adopting the current code for the design of building structures as the comparison standard, using the FLUENT software, taking the numerical simulation results of a high building’s wind load shape coefficient of for example, discussing the influence of four kinds of the convective terms discretization scheme, respectively the first-order upwind, the second order upwind , power law and Quadratic upwind interpolation for convective kinematics, on the simulation results of architectural numerical wind tunnel, provides the reference for the rational use of numerical wind tunnel method.

The Selection of the Difference Scheme in Numerical Simulation of Low-Rise Gable Roof Surface Pressure

2013 ◽  
Vol 711 ◽  
pp. 344-347
Author(s):  
Jian Feng Wu ◽  
Cai Hua Wang ◽  
Xue Qin Zhang
Keyword(s):  
Numerical Simulation ◽  
Surface Wind ◽  
Wind Pressure ◽  
Building Structures ◽  
Convective Term ◽  
Shape Coefficient ◽  
Fluent Software ◽  
The Difference ◽  
Load Shape ◽  
Selection Of

Using the FLUENT software, this paper taking the wind load shape coefficient in the current code for the design of building structures as the comparison standard, have numerical wind tunnel simulation of the wind the surface wind pressure on low layer double slope roof. It focused on the effect of four convective term difference schemes on the numerical simulation, such as First-Order Upwind, Second-Order Upwind, Power Law and Quadratic Upwind Interpolation for ConvectiveKinematics. It provided reasonable reference for selection of convective term difference format.

The Effect of the Numerical Wind Tunnel Simulation Results of Arched Roof for Different Turbulence Models

2013 ◽  
Vol 711 ◽  
pp. 348-351
Author(s):  
Cai Hua Wang ◽  
Jian Feng Wu ◽  
Wei Ling Wang
Keyword(s):  
Wind Tunnel ◽  
Surface Wind ◽  
Turbulence Models ◽  
Wind Pressure ◽  
Building Structures ◽  
Shape Coefficient ◽  
Wind Tunnel Simulation ◽  
Fluent Software ◽  
Load Shape ◽  
Selection Of

Using the FLUENT software, this paper taking the wind load shape coefficient in the current code for the design of building structures as the comparison standard, have numerical wind tunnel simulation of the wind the surface wind pressure on arch roof. It focused on the effect of the different turbulence models on the numerical simulation, such as Spalart-Allmaras, Standard k ε, RNGk ε, Realizablek ε, Standard k ω, SST k ωand RSM. It provided reasonable reference for selection of turbulence model.

Analysis of Flow in Power Plant Flue via Fluent Simulations

2013 ◽  
Vol 838-841 ◽  
pp. 2630-2633
Author(s):  
Guan Yi Chen ◽  
Guo Dong Yuan ◽  
Le Yu Zheng ◽  
Xiao Ke Guo ◽  
An Long Lv ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Power Plant ◽  
Gas Flow ◽  
Electrostatic Precipitator ◽  
Pressure Drops ◽  
Calculation Results ◽  
Fluent Software ◽  
Simulation Results ◽  
Supporting Structures ◽  
Main Factor

The gas flow status including velocity and pressure in the rectangular gas duct (before or after) electrostatic precipitator of a power plant were simulated using Fluent software. The grid accuracy which is required by simulation has been determined then the gas flow status has been analyzed through the comparison between numerical simulation results and empirical calculation results. The results show that flues inner supporting structures are the main factor of gas pressure drops and outlet velocity distrubution.

Numerical Simulation of the Inner Flow Field and the Optimal Design of Hema-Type ATY Nozzle Based on Fluent

2013 ◽  
Vol 634-638 ◽  
pp. 3774-3777
Author(s):  
Min Hua Zhang ◽  
Hong Mei Zheng ◽  
Cui Liu ◽  
Yin Hu Qu ◽  
Tao Liang ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Computational Fluid Dynamics ◽  
Optimal Design ◽  
Flow Field ◽  
Flow Fields ◽  
Fluent Software ◽  
Simulation Results

the inner flow fields of twelve Hema-type ATY nozzles which have different structure and parameters are simulated by the Fluent software, which is based on the CFD (Computational Fluid Dynamics) theory.Then the simulation results are analyzed，through wich the best designed nozzle is determined.

The Selection of Pressure Velocity Coupling Algorithm in the Numerical Wind Tunnel of Arch Roof

2012 ◽  
Vol 204-208 ◽  
pp. 4888-4891
Author(s):  
Jian Feng Wu ◽  
Cai Hua Wang ◽  
Lu Ping Yi
Keyword(s):  
Wind Tunnel ◽  
Surface Wind ◽  
Wind Pressure ◽  
Building Structures ◽  
Comparison Standard ◽  
Wind Tunnel Simulation ◽  
Fluent Software ◽  
Coupling Algorithm ◽  
Current Code ◽  
Selection Of

using the FLUENT software, this paper taking the current code for the design of building structures as the comparison standard, have numerical wind tunnel simulation of the wind the surface wind pressure on arch roof. It focuses on the analysis of the effects of three kinds of pressure velocity coupling algorithm on the numerical simulation results, respectively SIMPLE, SIMPLEC, PISO, to provide a basis for the reasonable selection of algorithm.

Numerical Simulation Study of Erosion for Fracturing Sandblasting in Elbow

2014 ◽  
Vol 1065-1069 ◽  
pp. 1911-1915
Author(s):  
Bao Rui Xu ◽  
Ming Hu Jiang ◽  
Li Xin Zhao ◽  
Fang Tan ◽  
Xiao Guang Zhang
Keyword(s):  
Numerical Simulation ◽  
Solid Particle ◽  
Solid Particle Erosion ◽  
Adjacent Area ◽  
Erosion Wear ◽  
Particle Erosion ◽  
Factors Affecting ◽  
Fluent Software ◽  
Simulation Results ◽  
The Right

Elbow as common components in the gas pipeline fails easily to natural gas carrying solid particle erosion in the process of practical work. From the viewpoint of hydromechanics, the paper analyses the flow field distribution of manifold pressure and gas-solid trajectory by using the Gambit model and Fluent software in view of the right-angle elbow and numerical simulation of the adjacent manifold. The result obtains the situation about the manifold inner wall by the solid particle erosion wear. The simulation results show more intuitively the elbow, the most prone to erosion part in the manifold adjacent area and shape in erosion. Meanwhile, the paper analyses the factors affecting the occurrence and development of erosion.

Numerical Simulation and Wind Tunnel Studies of the Wind Load on Wind Turbine Structures

2011 ◽  
Vol 250-253 ◽  
pp. 3811-3814
Author(s):  
Cheng Hsin Chang ◽  
Jen Mu Wang ◽  
Chii Ming Cheng
Keyword(s):  
Numerical Simulation ◽  
Wind Tunnel ◽  
Wind Turbine ◽  
Wind Tunnel Test ◽  
Bending Moment ◽  
Dynamic Mesh ◽  
Base Shear ◽  
Structural Responses ◽  
Simulation Results ◽  
Rng Turbulence Model

This paper investigated the structural responses of the wind turbine due to wind loads by performing the wind tunnel test and the Computational Fluid Dynamics, (CFD). The base shear force and the base moment of the wind turbine measured by the wind tunnel test were compared with the numerical simulation results. Both the numerical dynamic mesh and sliding mesh models were selected for the numerical simulations. The results showed that the dynamic mesh model was better than the sliding model by comparing to the wind tunnel test result. In the case of the k-epsilon RNG turbulence model, the prediction of the bending moment affecting by acrossswind was more than 50%, and the prediction of the force affecting by acrosswind was less than 3%. The both simulation results of the prototype and the full scale wind turbine were obtained by CFD model. The comparisons of the result showed that the error of Fxwas about 15% and Mywas about 13.5%.

Research on Air Deflector Optimal Design and Matching for Heavy-Duty Vehicle Based on Design of Experiment Technology

2013 ◽  
Vol 404 ◽  
pp. 188-193
Author(s):  
Jing Chen ◽  
Tao Song ◽  
Deng Feng Wang
Keyword(s):  
Optimal Design ◽  
Wind Tunnel ◽  
Drag Reduction ◽  
Wind Tunnel Test ◽  
Cfd Model ◽  
Heavy Duty ◽  
Cfd Simulations ◽  
Heavy Duty Vehicle ◽  
Fluent Software ◽  
Simulation Results

The drag reduction characteristic of air deflector of a heavy-duty vehicle is examined through CFD simulations and wind tunnel test in this paper. The CFD model of the truck is built using the FLUENT software and the simulation results are compared with the wind tunnel test data to verify the accuracy of simulation model. An air deflector is designed for this truck, A design of experiments approach was chosen as an efficient technique to optimize the design parameter and match with the truck to obtain the optimal drag reduction performance.

The Numerical Simulation for Wind Pressure on the Roof of Rhombic Plane and Saddle-Shaped Building

2012 ◽  
Vol 166-169 ◽  
pp. 869-872
Author(s):  
Cai Hua Wang ◽  
Jian Feng Wu
Keyword(s):  
Numerical Simulation ◽  
Low Cost ◽  
Pressure Coefficient ◽  
Wind Pressure ◽  
Average Wind ◽  
Wind Pressure Coefficient ◽  
Load Shape ◽  
Rng Turbulence Model ◽  
Numerical Wind Tunnel Method ◽  
Existing Structure

The existing “structure load code” did not give wind load shape coeeficient of rhombic plane and saddle-shaped roof .On this issue, numerical wind tunnel method has significant advantages such as low cost,fasting,collecting more comprehensive results.Using information of CFD and the software of FLUENT, using RNG - turbulence model, simulating a landform rhombic plane, the paper had numerical simulation of average wind pressure coefficient for rhombic plane and saddle-shaped roof building. It focused the effect on the numerical simulation for bending-span ratio. Finally it provided reference for reasonably determining the average wind pressure coefficient of rhombic plane and saddle-shaped roof building.

Determination of the Average Wind Pressure of Circular Flat and Saddle Roof Building Based on the Numerical Wind Tunnel Method

2012 ◽  
Vol 204-208 ◽  
pp. 865-868
Author(s):  
Cai Hua Wang ◽  
Hui Jian Li ◽  
Jian Feng Wu
Keyword(s):  
Wind Tunnel ◽  
Low Cost ◽  
Pressure Coefficient ◽  
Simple Algorithm ◽  
Wind Pressure ◽  
Building Structures ◽  
Class D ◽  
Average Wind ◽  
Wind Pressure Coefficient ◽  
Numerical Wind Tunnel Method

For numerical wind tunnel method has the advantages of low cost, fast speed, the more comprehensive results, the paper using CFD knowledge and the FLUENT software, using RSM turbulence model, SIMPLE algorithm, simulation class D landform, to have numerical simulation of average wind pressure coefficient for of the circular planar and saddle roof building ,which the current code for the design of building structures did not give, to provide reference for determining the average wind pressure coefficient of the circular planar and saddle roof building .

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