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Online since: November 2014
Authors: Nor Azwadi Che Sidik, Shuhaimi Mansor, Salim Mohamed Salim, Afiq Witri Muhammad Yazid
Standard k-ε (SKE) and Large Eddy Simulation (LES) techniques were chosen as the turbulent model for the validation study.
Firstly, a steady state simulation using SKE was obtained and the steady state statistics was used as the initial conditions for the LES simulation.
The LES simulation is continued for 30 s of simulation time in order to establish the turbulent wind fields throughout the domain and all statistics are averaged at least for 15 s.
Carissimo, Best practice guideline for the CFD simulation of flows in the urban environment.
An Intercomparison of Large-Eddy Simulations of the Stable Boundary Layer, Bound-Lay Meteorol 11 (2006) 247-272.
Firstly, a steady state simulation using SKE was obtained and the steady state statistics was used as the initial conditions for the LES simulation.
The LES simulation is continued for 30 s of simulation time in order to establish the turbulent wind fields throughout the domain and all statistics are averaged at least for 15 s.
Carissimo, Best practice guideline for the CFD simulation of flows in the urban environment.
An Intercomparison of Large-Eddy Simulations of the Stable Boundary Layer, Bound-Lay Meteorol 11 (2006) 247-272.
Online since: October 2013
Authors: Bin Xie, Feng Xiao
In this study, we valid and apply a multi-function CFD (computational fluid dynamics) model we have recently developed to simulate the propagation and breaking of offshore waves, as well as their impacts on costal structures.
The simulation is continued for 6s with an automatically adapted time step using maximum CFL-numbers of 0.75.
Simulations were carried out to predict the breaking pattern for different seabed slopes and wave heights.
From numerical simulations conducted in this study, we have got the major understanding as follows. 1.
References [1] K.M.T Kleefsman, G.Fekken, A Volume-of-Fluid based simulation method for wave impact problems, J.
The simulation is continued for 6s with an automatically adapted time step using maximum CFL-numbers of 0.75.
Simulations were carried out to predict the breaking pattern for different seabed slopes and wave heights.
From numerical simulations conducted in this study, we have got the major understanding as follows. 1.
References [1] K.M.T Kleefsman, G.Fekken, A Volume-of-Fluid based simulation method for wave impact problems, J.
Online since: November 2016
Authors: Bin Zhang, Qin He Sun, Wei Tong Liu
Thermal Performance of a Shape-Stabilized Phase Change Material Floor with Different Heating Positions
Bin Zhang a, Qinhe Sun b* and Weitong Liu c
College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China
azb-sh@163.com, bsunqinhe@foxmail.com, c398525021@qq.com
Keywords: computational fluid dynamics (CFD); shape–stabilized phase change material (SSPCM); thermal energy storage (TES); thermal performance
Abstract.
Simulation of the SSPCM Floor The floor system(as shown in Fig. 2) includes a 50 mm–thick polystyrene insulation layer, a 40 mm–thick PCM plate layer, a 20 mm–thick marble layer, and capillary tubes with a space of 40 mm.
The entire simulation process is divided into two stages: heat storage and heat release.
Simulation of the SSPCM Floor The floor system(as shown in Fig. 2) includes a 50 mm–thick polystyrene insulation layer, a 40 mm–thick PCM plate layer, a 20 mm–thick marble layer, and capillary tubes with a space of 40 mm.
The entire simulation process is divided into two stages: heat storage and heat release.
Online since: October 2012
Authors: Wei Ping Huang, Jie Li Fan
The Numerical Research of Two-degrees-of-freedom Vortex-induced Vibrations of Circular Cylinders
Jieli Fan1, a, Weiping Huang2,b
1Shandong Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100,China
2Shandong Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao 266100,China
afanjieli1115@126.com, bwphuang@ouc.edu.cn
Keywords: vortex-induced vibration; in-line VIV; cross-flow VIV; CFD
Abstract.
Numerical Simulation In this paper’s numerical simulation, the three-dimensional physical model is used.
Numerical Simulation In this paper’s numerical simulation, the three-dimensional physical model is used.
Online since: October 2014
Authors: Mohd Halim Irwan Ibrahim, Nasuha Sa'ude, Mustaffa Ibrahim
Two dimension(2D) finite-element analysis of the melts flow behavior will be conducted in Computational Fluid Dynamic (CFD), which are embedded module in the latest release of the ANSYS Workbench.
There are five main properties for each materials should used in the simulation.
In the simulation setup, correct inserted data is needed to avoid error during the simulation and the input data was the material properties and boundary condition setting (refer Figure II).
Five different materials was used in the simulation such as ABS, PP, PLA, ABS-10% Iron and ABS-10% copper.
Table VI shows the minimum and maximum velocity of different materials in the CFX simulation.
There are five main properties for each materials should used in the simulation.
In the simulation setup, correct inserted data is needed to avoid error during the simulation and the input data was the material properties and boundary condition setting (refer Figure II).
Five different materials was used in the simulation such as ABS, PP, PLA, ABS-10% Iron and ABS-10% copper.
Table VI shows the minimum and maximum velocity of different materials in the CFX simulation.
Online since: February 2014
Authors: Xue Bin Zhao, Yong Hui Guo, Yu Peng Liang, Li Xue Shi, Si Yue Ma, Jing Cui
The change of parameter
parameter
Pipeline spacing (0.1, 0.2,025 m)
Pipe diameter (0.03,0.04,0.05m)
The depth of buried pipes (0.8,0.1,0.12m)
The environment temperature of concrete (0, -5, -10degree)
Simulation results
The temperature distribution and the transformation law of phase interface.
Conclusion In this paper, the running characteristics of snow-melting system with using geothermal sources were simulated based on the Computational Fluid Dynamic (CFD).
Fluid simulation calculating examples and engineering application [M].
Conclusion In this paper, the running characteristics of snow-melting system with using geothermal sources were simulated based on the Computational Fluid Dynamic (CFD).
Fluid simulation calculating examples and engineering application [M].
Online since: June 2005
Authors: Da Zhi Yang, Min Qi, Wei Qiang Wang, Dongke Liang
The horizontal part,
with a constant stress of 0.65MPa, in the stress-strain curve of the plaque was applied for the
simulation of the non-recoverable deformation of the interlining, which was proved to be reasonable
by the latter simulation.
A new constitutive model for the plaque was introduced, which made the results of the simulation closer to the real situation.
It can be concluded from the simulation that the distal end of stent may injure the artery wall after deployment, and the recoil ratios of the three models were very different.
So FEM is proved to be an especially useful numerical simulation method for quantifying some biomechanical characteristics of ICSI.
Furthermore, some researchers have used computational fluid dynamics (CFD) to explore the effect of stent implantation on blood flow.
A new constitutive model for the plaque was introduced, which made the results of the simulation closer to the real situation.
It can be concluded from the simulation that the distal end of stent may injure the artery wall after deployment, and the recoil ratios of the three models were very different.
So FEM is proved to be an especially useful numerical simulation method for quantifying some biomechanical characteristics of ICSI.
Furthermore, some researchers have used computational fluid dynamics (CFD) to explore the effect of stent implantation on blood flow.
Online since: December 2014
Authors: Zhen Ning Zhao, Zhi Qiang Wen, Yuan Yuan Li
From the results of simulation, the threshold of inlet velocity can be found.
Numerical simulation results are general consistent with the actual and can reflect the actual circumstance.
The curve of numerical simulation results are general consistent with the actual the fan performance curve.
Fujun: CFD analysis (Tsinghua University press, Beijing, 2004 )
Zhanzhong: Examples and analysis of FLUENT simulation (Beijing Institute of Technology press, Beijing, 2009)
Numerical simulation results are general consistent with the actual and can reflect the actual circumstance.
The curve of numerical simulation results are general consistent with the actual the fan performance curve.
Fujun: CFD analysis (Tsinghua University press, Beijing, 2004 )
Zhanzhong: Examples and analysis of FLUENT simulation (Beijing Institute of Technology press, Beijing, 2009)
Online since: November 2010
Authors: Qing Fen Li, Zheng Yi Ren, Xiao Li Zhao, Li Kun Li
Simulation and analysis on the pressure-increasing effect of the pipeline
supercharging caused by self-oscillation cavity were carried out by finite element method.
Previous experimental results are accordant with the present simulation results.
The flow field analysis of 3D un-compressible flow may be predigested as the 2D problem by using commercially available Finite Element-code FLOTRAN CFD function of ANSYS.
We may therefore conclude that the numerical analyses are reliable since the experimental results in [4] are accordant with the present simulation results.
[3] Qian Sheng-hua: Numerical Simulation of Self-oscillation Cavity Flow Field, Natural Gas Industry, Vol. 6 (2004), p.26-30
Previous experimental results are accordant with the present simulation results.
The flow field analysis of 3D un-compressible flow may be predigested as the 2D problem by using commercially available Finite Element-code FLOTRAN CFD function of ANSYS.
We may therefore conclude that the numerical analyses are reliable since the experimental results in [4] are accordant with the present simulation results.
[3] Qian Sheng-hua: Numerical Simulation of Self-oscillation Cavity Flow Field, Natural Gas Industry, Vol. 6 (2004), p.26-30
Online since: April 2011
Authors: Tao Sun, Yi Zhang, Zhong Yi Wang, Hai Ou Sun
According to the numerical simulation result the length of plate should be 70°~90°.
Based on the result of numerical simulation, the duct is with plates which has taper radio 1.1 has the lowest velocity unevenness.
The result of numerical simulation is analyzed based on the velocity standard.
Numerical simulation of theoretical models and flow characteristics in 90°bending duct[J].
CFD prediction of air–solid flow in 180° curved duct [J].
Based on the result of numerical simulation, the duct is with plates which has taper radio 1.1 has the lowest velocity unevenness.
The result of numerical simulation is analyzed based on the velocity standard.
Numerical simulation of theoretical models and flow characteristics in 90°bending duct[J].
CFD prediction of air–solid flow in 180° curved duct [J].