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Online since: July 2011
Authors: P. Guan, Wan Shan Wang, M. Li, B.C. Li, Tian Biao Yu
The method uses CFD method to solve the oil film pressure field, instead of Reynolds equation, in order to obtain the oil film stiffness and damping.
In this paper, CFD and FEM are combined to research the dynamic characteristics of hybrid bearing spindle system.
There is no specific structural unit for the simulation of bearings.
Multi-Point Connection (MPC) can be used to complete the simulation of bearings.
Thus the correctness of the simulation results is demonstrated.
In this paper, CFD and FEM are combined to research the dynamic characteristics of hybrid bearing spindle system.
There is no specific structural unit for the simulation of bearings.
Multi-Point Connection (MPC) can be used to complete the simulation of bearings.
Thus the correctness of the simulation results is demonstrated.
Online since: October 2013
Authors: Xin Xu, Zhi Wei, De Hua Chen, Da Wei Liu
However, the extrapolation method requiring plenty of data was investigated based on the CFD results for the reason of low cost and short period.
Influence of computational grids convergence and turbulent models were investigated during the process of simulation.
However, the extrapolation method requiring plenty of data was investigated based on the CFD results for the reason of low cost and short period.
The governing equations are . (1) Influence of turbulent models and computational grids convergence were investigated during the process of simulation.
System Simulation Technology & Application(Volume 13), 2011
Influence of computational grids convergence and turbulent models were investigated during the process of simulation.
However, the extrapolation method requiring plenty of data was investigated based on the CFD results for the reason of low cost and short period.
The governing equations are . (1) Influence of turbulent models and computational grids convergence were investigated during the process of simulation.
System Simulation Technology & Application(Volume 13), 2011
Online since: January 2012
Authors: Simiu Emil, Isam Janajreh
Large Eddy Simulation of Wind Loads on a Low-Rise Structure and Comparison with Wind Tunnel Results
Isam Janajreh1,a, and Emil Simiu2,b
1Masdar Institute of Science and Technology, Abu Dhabi, United Arab Emirates
2National Institute of Standard and Technology, Gaithersburg, USA
aijanajreh@masdar.ac.ae, bemil.simiu@nist.gov
Keywords: Aerodynamics, Computational Fluid Dynamics (CFD), Large Eddy Simulation, Wind Engineering
Abstract.
The estimates were obtained by large eddy simulation (LES).
Direct Numerical Simulation (DNS) and Large Eddy Simulations (LES) are alternatives, albeit costly, to RANS that can model satisfactorily the low frequency scales.
Governing System and Turbulent Modeling via Large Eddy Simulation.
This work suggests the potential feasibility of CFD utilizing Large Eddy Simulation to simulate pressure time histories obtained by wind tunnel measurements.
The estimates were obtained by large eddy simulation (LES).
Direct Numerical Simulation (DNS) and Large Eddy Simulations (LES) are alternatives, albeit costly, to RANS that can model satisfactorily the low frequency scales.
Governing System and Turbulent Modeling via Large Eddy Simulation.
This work suggests the potential feasibility of CFD utilizing Large Eddy Simulation to simulate pressure time histories obtained by wind tunnel measurements.
Online since: July 2012
Authors: Fa En Shi, Ru Shan Ren, Yun Chao Zhao, Da Hua Jiang
Physical and mathematical model are established on the basis of standard kitchen, and flow field characteristics(FFC) of the exhaust hood(EH) is simulated by CFD.
In the working condition, numerical simulation of EH flow field shows its good control effect, and the simulation helps design exhaust system[1].
CFD simulation model of the kitchen(long×width×height is 4×5×3.5m), is established on the basis of standard kitchen considered the layout diversity of restaurant kitchen.
The Numerical Simulation of Kitchen Ventilation[J].
Numerical Simulation of IAQ under Up-suction Exhaust Hood in Commercial Kitchen[J].
In the working condition, numerical simulation of EH flow field shows its good control effect, and the simulation helps design exhaust system[1].
CFD simulation model of the kitchen(long×width×height is 4×5×3.5m), is established on the basis of standard kitchen considered the layout diversity of restaurant kitchen.
The Numerical Simulation of Kitchen Ventilation[J].
Numerical Simulation of IAQ under Up-suction Exhaust Hood in Commercial Kitchen[J].
Online since: July 2014
Authors: Jiang Tao Zhang, Mei Zhang, Jian Li
Different methods have been applied for the study of insulation layer ablation of SRM, such as theoretical analysis[1], experimental study[2] and numerical simulation[3,8].
Moreover, the rapid development of CFD software has brought great benefits for the development of numerical simulation.
Among all of the general CFD softwares, Fluent has been recognized as one of the most powerful and useful CFD software, and it has been widely used to study the ablation of insulation layer in SRM.
For example, Yu et al[4] performed the numerical simulation of the nozzle and plume flow field.
Yang, Two-phase numerical simulation for flow field of ablation spray gun based on fluent, Journal of Projectiles, Rockets, Missiles and Guidance, 32,3 (2012) 133-136
Moreover, the rapid development of CFD software has brought great benefits for the development of numerical simulation.
Among all of the general CFD softwares, Fluent has been recognized as one of the most powerful and useful CFD software, and it has been widely used to study the ablation of insulation layer in SRM.
For example, Yu et al[4] performed the numerical simulation of the nozzle and plume flow field.
Yang, Two-phase numerical simulation for flow field of ablation spray gun based on fluent, Journal of Projectiles, Rockets, Missiles and Guidance, 32,3 (2012) 133-136
Online since: February 2012
Authors: Wen Jiang Shi, Shan Cai Xiao, Ming Wei Ge, Ming Qin
The air cooling condition for 1.5MW wind rotor is evaluated by Computational fluid dynamics(CFD).
The optimization of the ribs arrangement is carried out based on CFD.
In the CFD simulation, the imcompressible continum equation and the steady Reynolds Averaged Navier Stokes equation are used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the density of the cooling air, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the computational domain and the calculation grids used in the simulation.As shown in Fig.2(a) a semi-circle colume computational domain is used in the simulation.
About 4 millions are used for the the final simulation.
The optimization of the ribs arrangement is carried out based on CFD.
In the CFD simulation, the imcompressible continum equation and the steady Reynolds Averaged Navier Stokes equation are used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the density of the cooling air, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the computational domain and the calculation grids used in the simulation.As shown in Fig.2(a) a semi-circle colume computational domain is used in the simulation.
About 4 millions are used for the the final simulation.
Online since: December 2014
Authors: Marcos A.S. Barrozo, C.R. Duarte, Irineu Petri Jr., D.A. Santos
An Investigation of the Different Flow Regimes in a Rotating Drum Through Experimental and Simulation
D.
The Eulerian–Eulerian multiphase model along with the kinetic theory of granular flow was used in the simulations.
The numerical simulation results showed significant insights towards understanding of the particle dynamic in a rotating drum.
Studies of numerical simulation by CFD technique have become popular in the field of gas-solid flow.
Conclusions From experimental data and CFD simulations, it was possible to investigate the particle (simple superphosphate fertilizer) dynamic behavior in a rotating drum operating in a rolling regime under different rotating velocity.
The Eulerian–Eulerian multiphase model along with the kinetic theory of granular flow was used in the simulations.
The numerical simulation results showed significant insights towards understanding of the particle dynamic in a rotating drum.
Studies of numerical simulation by CFD technique have become popular in the field of gas-solid flow.
Conclusions From experimental data and CFD simulations, it was possible to investigate the particle (simple superphosphate fertilizer) dynamic behavior in a rotating drum operating in a rolling regime under different rotating velocity.
Online since: August 2015
Authors: S. Thangavel, G.P. Pradeep, T. Micha Premkumar, Sivamani Seralathan
asiva.seralathan@gmail.com, btmichamech@gmail.com
Keywords: CFD, vertical axis wind turbine, NACA profile, self starting
Abstract.
A study was done by Mclaren et al. [3, 4] by using CFD simulation of NACA 0015 on dynamic thrust and radial forces on a vertical axis wind turbine blade.
The study to show self-starting capability of cambered airfoil using CFD analysis was reported by Habtamu Beri and Yingxue Yao [5].
The commercial CFD code, ANSYS CFX 13.0© is used for the present numerical studies.
Ziada, CFD simulation of dynamic thrust and radial forces on a vertical axis wind turbine blade, Proceedings of the 15th annual conference of the CFD society of Canada, Toronto, Canada, 2007
A study was done by Mclaren et al. [3, 4] by using CFD simulation of NACA 0015 on dynamic thrust and radial forces on a vertical axis wind turbine blade.
The study to show self-starting capability of cambered airfoil using CFD analysis was reported by Habtamu Beri and Yingxue Yao [5].
The commercial CFD code, ANSYS CFX 13.0© is used for the present numerical studies.
Ziada, CFD simulation of dynamic thrust and radial forces on a vertical axis wind turbine blade, Proceedings of the 15th annual conference of the CFD society of Canada, Toronto, Canada, 2007
Online since: September 2011
Authors: Yao Zhen Li
Large Eddy Simulation of Flow around a Cylinder at Re=3900 Using a CFD Code
Yaozhen Li
School of Mechatronic Engineering, Lanzhou Jiaotong University, Lanzhou, China 730070
liyz@mail.lzjtu.cn
Keywords: LES, Flow around a Cylinder, Mesh Independent, Subgrid-Scale Model.
Research by Young M E [4] reveals that three-dimensional Reynolds averaged Navier-Stokes model (RANS) improves the simulation results, but the difference between simulation and experiment is still large.
Conclusions LES method of the commercial CFD code STAR-CD is used to simulate the flow around a cylinder at Re=3900, and the three-dimensional characteristics is verified.
Large Eddy Simulation of Flow Around One and Two Circular Cylinders.
Computational Fluid Dynamics Analysis-the Principle and Application of CFD Software, Tsinghua University Press, Beijing 2004
Research by Young M E [4] reveals that three-dimensional Reynolds averaged Navier-Stokes model (RANS) improves the simulation results, but the difference between simulation and experiment is still large.
Conclusions LES method of the commercial CFD code STAR-CD is used to simulate the flow around a cylinder at Re=3900, and the three-dimensional characteristics is verified.
Large Eddy Simulation of Flow Around One and Two Circular Cylinders.
Computational Fluid Dynamics Analysis-the Principle and Application of CFD Software, Tsinghua University Press, Beijing 2004
Online since: May 2021
Authors: M. Selvaraj, K. Ramesh Kumar
From the CFD simulation, swept blade has higher pressure level than straight edge blades, which gives higher lift force as well as delays the stall point.
Moreover, EPPLER 423, SELIG S1223, Modified NACA0006 and FX 74-CL5-140 profiles considered for CFD analysis.
Kenny Lau, Design and Flow velocity simulation of Diffuser augmented wind turbine using CFD, Journal of Engineering Science and Technology, Vol.8, No.4 (2013) 372-384
[34] SK Thangavelu, CY Goh & CV Sia, Design and Flow Simulation of Concentrator Augmented Wind Turbine, IOP Conf.
Farooq, Modeling and analysis of wind turbine blade with advanced materials by simulation.
Moreover, EPPLER 423, SELIG S1223, Modified NACA0006 and FX 74-CL5-140 profiles considered for CFD analysis.
Kenny Lau, Design and Flow velocity simulation of Diffuser augmented wind turbine using CFD, Journal of Engineering Science and Technology, Vol.8, No.4 (2013) 372-384
[34] SK Thangavelu, CY Goh & CV Sia, Design and Flow Simulation of Concentrator Augmented Wind Turbine, IOP Conf.
Farooq, Modeling and analysis of wind turbine blade with advanced materials by simulation.