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Online since: October 2014
Authors: Shu Zhong Wang, Ming Luo, Jia Bin Zhu
The corresponding CFD model was then established on the basis of the experiment study.
When the solid slag layer was not considered, simulation results showed that the parameters such as molten slag flow, rotary speed, disk radius, fluid viscosity and fluid density had important influence on the liquid film thickness at the edge of the disk, but the surface tension of molten slag had little impact [5].
Moreover, they also obtained the film thickness at the edge of rotary disk by numerical simulation.
It was found that the simulation results can predict the experimental data properly.
:Ninth International Conference on CFD in the Minerals and Process Industries CSIRO,2012
When the solid slag layer was not considered, simulation results showed that the parameters such as molten slag flow, rotary speed, disk radius, fluid viscosity and fluid density had important influence on the liquid film thickness at the edge of the disk, but the surface tension of molten slag had little impact [5].
Moreover, they also obtained the film thickness at the edge of rotary disk by numerical simulation.
It was found that the simulation results can predict the experimental data properly.
:Ninth International Conference on CFD in the Minerals and Process Industries CSIRO,2012
Online since: June 2014
Authors: Kianpour Ehsan, Nor Azwadi Che Sidik
Baheri Islami et al. [39] used computational fluid dynamics CFD to predict the variations of adiabatic film cooling holes with injection angle of 35 degree.
Wahid, Cylindrical and Row Trenched Cooling Holes with Alignment Angle of 90o at Different Blowing Ratios, CFD Letter. 5(4) (2013) 165-173
Thole, Simulations of Multi-Phase Particle Deposition on Endwall Film-Cooling Holes in Transverse Trenches, J.
Thole, Simulations of Multi-Phase Particle Deposition on Endwall Film-Cooling Holes in Transverse Trenches, J.
Kohli, Experimental Simulation of a Film Cooled Turbine Blade Leading Edge Including Thermal Barrier Coating Effects, J.
Wahid, Cylindrical and Row Trenched Cooling Holes with Alignment Angle of 90o at Different Blowing Ratios, CFD Letter. 5(4) (2013) 165-173
Thole, Simulations of Multi-Phase Particle Deposition on Endwall Film-Cooling Holes in Transverse Trenches, J.
Thole, Simulations of Multi-Phase Particle Deposition on Endwall Film-Cooling Holes in Transverse Trenches, J.
Kohli, Experimental Simulation of a Film Cooled Turbine Blade Leading Edge Including Thermal Barrier Coating Effects, J.
Online since: May 2011
Authors: Hua Bai, Jia Wu Li
Numerical Simulation of Flow over a Circular Cylinder at Low Reynolds Number
Hua Baia, Jiawu Lib
School of Highway, Chang’an University, Xi’an, Shaanxi, 710064, China
abaihua15@163.com,bljw@gl.chd.edu.cn
Keywords: circular cylinder, numerical simulation, pressure coefficient, drag coefficient, Strouhal number, control measures
Abstract.
The focus of this numerical simulation was to research the characteristics of pressure distribution, drag coefficient and lift coefficient, and the Strouhal number was calculated at Reynolds-numbers value of 200.
With the speed and capacity of computer increasing rapidly, numerical simulation has become an effective means of flow over a circular cylinder research because of its easily modeling, quicker and needs less investment.
Through CFD simulation, drag coefficient, lift coefficient and Strouhal number are analyzed, the instantaneous and time averaged flow field and the pressure coefficient on the cylinder are studied, and the complex phenomenon of separation and swirl is especially discussed.
Finite volume method is used for the present simulations.
The focus of this numerical simulation was to research the characteristics of pressure distribution, drag coefficient and lift coefficient, and the Strouhal number was calculated at Reynolds-numbers value of 200.
With the speed and capacity of computer increasing rapidly, numerical simulation has become an effective means of flow over a circular cylinder research because of its easily modeling, quicker and needs less investment.
Through CFD simulation, drag coefficient, lift coefficient and Strouhal number are analyzed, the instantaneous and time averaged flow field and the pressure coefficient on the cylinder are studied, and the complex phenomenon of separation and swirl is especially discussed.
Finite volume method is used for the present simulations.
Online since: September 2013
Authors: Xing Liang
And simulation scheme and the corresponding values of boundary condition is showed in table1.
Flow pattern analysis.Fig3 shows the numerical simulation results of operation scheme 1.
Fig 6 shows the numerical simulation result of operation scheme 4.
References [1] Liu Chao, Han Xu, Zhou Jiren, et al, Numerical simulation of turbulent flow in forebay with side- intake of pumping station, Journal of Drainage and Irrigation Machinery.27(2009) 281-286 [2] Liu Xinyang, GaoChuanchang, Shi Liwen, et al, Numerical simulation for fluid meliorating in both forebay and suction bay of pumping stations, Journal of Drainage and Irrigation Machinery Engineering. 28(2010) 242-246
[3]Nakayam A., Isasue N, Large eddy simulation of vortex flow in intake channel of hydropower facility, Journal of Hydraulic Research, 48(2010) 415-427 [4] Bin Cheng, Yong-hai Yu, CFD simulation and optimization for lateral diversion and intake pumping stations, 2012 International Conference on Modern Hydraulic Engineering, 28 (2012) 122-127 [5]TangXue-lin, Wang Wu-chang, Wang Fu-jun.
Flow pattern analysis.Fig3 shows the numerical simulation results of operation scheme 1.
Fig 6 shows the numerical simulation result of operation scheme 4.
References [1] Liu Chao, Han Xu, Zhou Jiren, et al, Numerical simulation of turbulent flow in forebay with side- intake of pumping station, Journal of Drainage and Irrigation Machinery.27(2009) 281-286 [2] Liu Xinyang, GaoChuanchang, Shi Liwen, et al, Numerical simulation for fluid meliorating in both forebay and suction bay of pumping stations, Journal of Drainage and Irrigation Machinery Engineering. 28(2010) 242-246
[3]Nakayam A., Isasue N, Large eddy simulation of vortex flow in intake channel of hydropower facility, Journal of Hydraulic Research, 48(2010) 415-427 [4] Bin Cheng, Yong-hai Yu, CFD simulation and optimization for lateral diversion and intake pumping stations, 2012 International Conference on Modern Hydraulic Engineering, 28 (2012) 122-127 [5]TangXue-lin, Wang Wu-chang, Wang Fu-jun.
Online since: December 2012
Authors: Zhi Gang Yang, Ting Li, Qing Jia
The Influence of Rotating Wheels on Vehicle Aerodynamics
Ting Li 1, a, Qing Jia 2, b, Zhigang Yang 3, c
1, 2, 3 Caoan Road 4800, Shanghai automotive wind tunnel center, China
a litingyyhs@yahoo.cn, b qing.jia@sawtc.com, c zhigangyang@tongji.edu.cn
Keywords: Numerical Simulation, Steady RNS, Rotating Wheel, Simplified And Production Vehicle
Abstract.
Two different conditions including stationary and rotation were employed in computational simulation by steady RNS Navier-Stokes calculation.
Numerical Simulation Figure1 shows the mode, a full scale size of a production vehicle.
Acknowledgements The National Basic Research Program of China (973 Program) Reference [1] Morelli A., Aerodynamic Actions on an Automobile Wheel[C]. 1st Symposium on Road Vehicle Aerodynamics, London, 1969 [2] Axon L., Garry K., Howell J., An Evaluation of CFD for Modelling the Flow Around Stationary and Rotating Isolated Wheels[J].
Two different conditions including stationary and rotation were employed in computational simulation by steady RNS Navier-Stokes calculation.
Numerical Simulation Figure1 shows the mode, a full scale size of a production vehicle.
Acknowledgements The National Basic Research Program of China (973 Program) Reference [1] Morelli A., Aerodynamic Actions on an Automobile Wheel[C]. 1st Symposium on Road Vehicle Aerodynamics, London, 1969 [2] Axon L., Garry K., Howell J., An Evaluation of CFD for Modelling the Flow Around Stationary and Rotating Isolated Wheels[J].
Online since: July 2014
Authors: Jium Ming Lin, Cheng Hung Lin
The third one is the simulation and discussion.
Simulation and Discussion In this section the ESI-CFD+ software package is applied for simulation.
Besides, we are grateful to the National Center for High-performance Computing (NCHC) for computer time and facilities of ESI-CFD+ software package.
Giani: ‘Thermal simulation and experimental results of a micromachined thermal inclinometer,’ Sensors and Actuators A: Physical, 2008, 141, (2), 307-313
Simulation and Discussion In this section the ESI-CFD+ software package is applied for simulation.
Besides, we are grateful to the National Center for High-performance Computing (NCHC) for computer time and facilities of ESI-CFD+ software package.
Giani: ‘Thermal simulation and experimental results of a micromachined thermal inclinometer,’ Sensors and Actuators A: Physical, 2008, 141, (2), 307-313
Online since: August 2013
Authors: Chen Jie, Jun Hui Wu, Kai Yan Lin, Hui Ping Si, Liang Sun
The optimization of the structure and working parameters of the seeder can be realized through dynamic interference check and spatial motion path simulation for the whole sowing process[5].
Dong Chunwang et al. (2011) used CFD methods to analysis different structural forms of flow field in the chamber, and optimized the structure of the suction hole.
In recent years, along with increasing of computer operation speed, CFD software has been widely used in the refined calculation of multiphase flow field. e.g.
[5] Xia Hongmei, Li Zhiwei, Wang Hongjun: Simulation Design of the Pneumatic Plate-type Precision Seeder Based on Virtual Prototype.
[18] Li Yaoming, Zhao Zhan, Chen Jin, Xu Lizhang: Discrete Element Method Simulation of Seeds Motion in Vibrated Bed of Precision Vacuum Seeder.
Dong Chunwang et al. (2011) used CFD methods to analysis different structural forms of flow field in the chamber, and optimized the structure of the suction hole.
In recent years, along with increasing of computer operation speed, CFD software has been widely used in the refined calculation of multiphase flow field. e.g.
[5] Xia Hongmei, Li Zhiwei, Wang Hongjun: Simulation Design of the Pneumatic Plate-type Precision Seeder Based on Virtual Prototype.
[18] Li Yaoming, Zhao Zhan, Chen Jin, Xu Lizhang: Discrete Element Method Simulation of Seeds Motion in Vibrated Bed of Precision Vacuum Seeder.
Online since: July 2015
Authors: Yves Bereaux, J.Y. Charmeau, Renaud G. Rinaldi, Jean Balcaen, Sambor Chhay, Jordan Biglione
Thickness measurements using image analysis are performed and comparisons with the simulation
results are satisfactory.
Simulation Results The blow-moulding stage is simulated by the use of the FEM commercial software POLYFLOW.
Polyflow is a Finite-Element Method (FEM) Computational Fluid Dynamics (CFD) program dedicated to the resolution of fluid problems involving viscous and viscoelastic fluid flows [1].
This resulting median profile is used for comparison with the simulation.
The simulation results shows good agreement with experimental measurement.
Simulation Results The blow-moulding stage is simulated by the use of the FEM commercial software POLYFLOW.
Polyflow is a Finite-Element Method (FEM) Computational Fluid Dynamics (CFD) program dedicated to the resolution of fluid problems involving viscous and viscoelastic fluid flows [1].
This resulting median profile is used for comparison with the simulation.
The simulation results shows good agreement with experimental measurement.
Online since: November 2012
Authors: Ya Jun Fan, Zhang Xu, Ding Wensi
Tel: +86-0-13318769009;E-mail: wsding@scut.edu.cn (Ding Wensi)
Keywords: centrifugal fan, series, numerical simulation, flow field
Abstract.
To consider the impact of changed conditions on performance of centrifugal fan, internal flow of three-stage centrifugal fan at rated speed in different total pressure conditions is analyzed by CFD software FLUENT6.3 in this paper.
In order to investigate the three-stage centrifugal fan with more complex features, numerical simulation of the flow field in type 700 fan under different total pressure conditions at the rated speed (4600 r/min) was conducted in this project.
References [1] Ding Wensi, He Xiangbin, Numerical simulation of internal flow field in three-stage centrifugal fan of grain sucker, J.
Numerical Simulation of Flow Field for a Whole Centrifugal Fan and Analysis of the Effects of Blade Inlet Angle and Impeller Gap, J.
To consider the impact of changed conditions on performance of centrifugal fan, internal flow of three-stage centrifugal fan at rated speed in different total pressure conditions is analyzed by CFD software FLUENT6.3 in this paper.
In order to investigate the three-stage centrifugal fan with more complex features, numerical simulation of the flow field in type 700 fan under different total pressure conditions at the rated speed (4600 r/min) was conducted in this project.
References [1] Ding Wensi, He Xiangbin, Numerical simulation of internal flow field in three-stage centrifugal fan of grain sucker, J.
Numerical Simulation of Flow Field for a Whole Centrifugal Fan and Analysis of the Effects of Blade Inlet Angle and Impeller Gap, J.
Online since: August 2019
Authors: M.B.S.P. Condeço, J.M.P. Conde
In simulations without porous zone solves only the RANS equations.
On Fluent, a constant time step of 0,015625 s (T/640) used was for all simulations.
In future work, simulations will be made considering that influence.
[8] OpenCFD, OpenFOAM - The Open Source CFD Toolbox - User Guide, OpenCFD Limited, 2017
Fredsøe, A wave generation toolbox for the open-source CFD library: OpenFoam®.
On Fluent, a constant time step of 0,015625 s (T/640) used was for all simulations.
In future work, simulations will be made considering that influence.
[8] OpenCFD, OpenFOAM - The Open Source CFD Toolbox - User Guide, OpenCFD Limited, 2017
Fredsøe, A wave generation toolbox for the open-source CFD library: OpenFoam®.