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Online since: August 2018
Authors: James K. Carson, Thomas Archbold
Carsonb
School of Engineering, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
athomasarchbold3@gmail.com, bjkcarson@waikato.ac.nz
Keywords: Computational Fluid Dynamics (CFD), Cyclone Separation, Multiphase Flow Modelling
Abstract.
Because of the opposing geometry of the kernel and shell particles, a new framework is derived using CFD simulations to predict the drag coefficient of the shell particle as a function of orientation and Reynolds number.
All simulations of the particle behaviour were executed using a version of ANSYS Fluent 17.0.
The drag coefficients obtained from simulations were approximated by a function of best fit (Eq. 24).
The maximum percentage difference between the simulation results and the approximated model is 23.7%.
Because of the opposing geometry of the kernel and shell particles, a new framework is derived using CFD simulations to predict the drag coefficient of the shell particle as a function of orientation and Reynolds number.
All simulations of the particle behaviour were executed using a version of ANSYS Fluent 17.0.
The drag coefficients obtained from simulations were approximated by a function of best fit (Eq. 24).
The maximum percentage difference between the simulation results and the approximated model is 23.7%.
Online since: December 2012
Authors: Zhen Ling Fu, Li Li Zhang, Yan Bin Shi
Note that the thermo-chemical behavior simulation based on CFD technology is to improve productivity with better injection formation.
Numerical Simulation.
For the equations being able to close, constraint conditions are to be given to solve the CFD model, then the simulation is carried out by numerical-approaching method.
It can be seen that the simulation shows the preferable forecasting result.
Conclusions Through analyzing the simulation results, the numerical simulation platform has been verified, and the errors have not influenced its validity.
Numerical Simulation.
For the equations being able to close, constraint conditions are to be given to solve the CFD model, then the simulation is carried out by numerical-approaching method.
It can be seen that the simulation shows the preferable forecasting result.
Conclusions Through analyzing the simulation results, the numerical simulation platform has been verified, and the errors have not influenced its validity.
Online since: July 2016
Authors: Toshiyuki Obikawa, Zheng Long Fang
Additionally, computational fluid dynamics (CFD) analysis was also utilized to reveal the mechanism of the coolant flow behavior near the cutting zone [5].
(a) Perspective of CFD model, (b) VFOL distribution within the flank wear land Coolant Flow Visualization.
The general purpose of CFD code was utilized [5] to reveal the behavior of coolant flow around the entry of the tunnel at the minor flank face.
Stander k-epsilon model was used for describing the turbulent flow of the coolant inside the simulation area.
Finally, the actions of the coolant flow located within the width of the flank wear land were visualized by CFD analysis.
(a) Perspective of CFD model, (b) VFOL distribution within the flank wear land Coolant Flow Visualization.
The general purpose of CFD code was utilized [5] to reveal the behavior of coolant flow around the entry of the tunnel at the minor flank face.
Stander k-epsilon model was used for describing the turbulent flow of the coolant inside the simulation area.
Finally, the actions of the coolant flow located within the width of the flank wear land were visualized by CFD analysis.
Online since: November 2011
Authors: Ji Zhuang Hui, Jie Cao, Ze Feng Liu, Ya Ke Zou
The results of the simulation are checked out through the experiments.
With the development of CFD and computer technology, three-dimensional flow field in torque converter can be calculated accurately.
Basic computational methods of flow field by CFD are simplified introduced in this paper [4]. 3-D geometric model of wheel in torque converter is built in UG.
The Simulation result is test by static endurance test.
The Simulation Model for Torque Converter Flow Field.
With the development of CFD and computer technology, three-dimensional flow field in torque converter can be calculated accurately.
Basic computational methods of flow field by CFD are simplified introduced in this paper [4]. 3-D geometric model of wheel in torque converter is built in UG.
The Simulation result is test by static endurance test.
The Simulation Model for Torque Converter Flow Field.
Online since: September 2024
Authors: Aldrin D. Calderon, Jhon Carlo P. Bajaro
Also to further ensure its accuracy a CFD (Computational Fluid Dynamics) simulation will going to be conducted as a comparison test to the thermal camera attached in drone in order to monitor it’s efficiency.
However, BES (Building Energy Simulations) can provide CFD with dynamically changing boundary conditions for more extensive transient analysis.
Simulation discontinuities and researcher strategies to overcome them are next investigated in relation to the co- simulation mechanism [10].
For the purpose of further analyzing the precision of the data that will be obtained, CFD simulations of Fused High Definition RGB images and thermal images from infrared camera that was mounted to the drone will be performed.
Simulation to CFD for Verification of Results 1.
However, BES (Building Energy Simulations) can provide CFD with dynamically changing boundary conditions for more extensive transient analysis.
Simulation discontinuities and researcher strategies to overcome them are next investigated in relation to the co- simulation mechanism [10].
For the purpose of further analyzing the precision of the data that will be obtained, CFD simulations of Fused High Definition RGB images and thermal images from infrared camera that was mounted to the drone will be performed.
Simulation to CFD for Verification of Results 1.
Online since: January 2011
Authors: You Hong Zhang, Xin Long Chang, Chun Guo Yue, Shu Jun Yang
Numerical Simulation of Interior Flow Field of a Variable
Thrust Rocket Engine
Yue Chun-guo1, a, Chang Xin-Long1, b, Yang Shu-jun2, c, Zhang You-hong1, d
1Xi’an Research Inst. of Hi-Tech Hongqing Town, Xi’an, China, 710025
2203 Institute of China North Industries Group Corporation, Xi’an, China, 710065
aemail: wsgangzi802 @qq.com bemail: xinlongch@sina.com.cn
cemail: chuangshawudi@etang.com demail: zyhnpu@hotmail.com
Keywords: Variable thrust rocket engine; Numerical simulation; Flow field; Fluent
Abstract: With the support of powerful calculation ability of computer and Fluent of CFD software, integrative simulation research of the variable thrust liquid propellant rocket engine was developed.
Numerical simulation of interior flow field of a variable thrust rocket engine with flux-oriented injector was done.
Based on the previous research, combustion flow integrated simulations of variable thrust engine were developed.
Mathematical model[4] Eulerian-Lagrangian approach was adopted in the simulation of liquid rocket engine spray combustion process.
[4] Zhao Jian-xing: Numerical simulation of combustion.
Numerical simulation of interior flow field of a variable thrust rocket engine with flux-oriented injector was done.
Based on the previous research, combustion flow integrated simulations of variable thrust engine were developed.
Mathematical model[4] Eulerian-Lagrangian approach was adopted in the simulation of liquid rocket engine spray combustion process.
[4] Zhao Jian-xing: Numerical simulation of combustion.
Online since: January 2013
Authors: Shyh Chour Huang, Kuang Hung Hsien
An orthogonal array, the S/N ratio, MPCI, ANOVA, and CFD were used to study the multiple-objectives in the ultrathin centrifugal fan design.
This study used an alternative approach based on the combination of CFD, the Taguchi method, and fuzzy logic to determine the optimal design parameters of the ultrathin fan.
Confirmation Experiments Confirmation experiments were performed to test the fuzzy-based Taguchi method design of the centrifugal fan, which used CFD software, Solidworks Flow Simulation.
This study used an alternative approach based on the combination of CFD, the Taguchi method, and fuzzy logic to determine the optimal design parameters of the ultrathin fan.
Confirmation Experiments Confirmation experiments were performed to test the fuzzy-based Taguchi method design of the centrifugal fan, which used CFD software, Solidworks Flow Simulation.
Online since: October 2011
Authors: Xiang Xu, Yun Han Xiao, Xue Yao Wang, Jia Chang Wang
In this paper, the numerical simulation research for the back-feeder is carried out.
Under the working conditions, the consistence of the flow character between the simulation and the experiment proved the practicability of the mathematic and physical models in this simulation.
With the development of the computer technology, the CFD (Computational Fluid Dynamics) has developed rapidly, which provide a low-cost and high efficient design method.
In this work, based on the two-fluid model, the 2D numerical simulation for back-feeder and standpipe is carried out to test the validity of the simulation models.
Figure 1 illustrates the experimental apparatus used in this simulation study.
Under the working conditions, the consistence of the flow character between the simulation and the experiment proved the practicability of the mathematic and physical models in this simulation.
With the development of the computer technology, the CFD (Computational Fluid Dynamics) has developed rapidly, which provide a low-cost and high efficient design method.
In this work, based on the two-fluid model, the 2D numerical simulation for back-feeder and standpipe is carried out to test the validity of the simulation models.
Figure 1 illustrates the experimental apparatus used in this simulation study.
Online since: December 2014
Authors: Lu Dai, Xu Hu, Quan Zhang, Yuan Sheng Lin
In this paper, based on reducing noise and isolating vibration, the inner flow field of the centrifugal pump was emulated by CFD method.
They mainly studied by two kinds of methods: experimental and numerical simulation methods [2].
Numerical simulation of the dynamic effects due to impeller-volute interaction in a centrifugal pump[J].
Numerical simulation of unsteady flow in double-blade pump [J].
Dissertation 3-D unsteady numerical simulation and fluid-induced vibration for centrifugal pumps [D].
They mainly studied by two kinds of methods: experimental and numerical simulation methods [2].
Numerical simulation of the dynamic effects due to impeller-volute interaction in a centrifugal pump[J].
Numerical simulation of unsteady flow in double-blade pump [J].
Dissertation 3-D unsteady numerical simulation and fluid-induced vibration for centrifugal pumps [D].
Online since: June 2014
Authors: Lei Qiu, Ji Hai Duan
Design and Simulation Optimization of the Gravity oil-water Separator
QiuLei 1, a, Jihai Duan*1,b
1Key Laboratory of Multiphase Fluid Reaction and Separation; College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
aqiu2007lei@163.com, bduanjihai@yahoo.com
Keywords: Coalescence, Oil-water Separation, Perforated Plate, Flow field.
Fig.1 Coalescence mechanism of inclined plates type coalescence component Numerical Method Computational fluid dynamics (CFD) is an effective approach to analyze the hydrodynamics in multiphase fluid.
As the specialized and widespread use CFD software, FLUENT was adopted to simulate the oil/water separator.
Table 1 Parameter settings in Simulation process Parameter Setting inlet Velocity-inlet outlet Outflow walls no slip operation pressure[kPa] 101.325 multi-flow model Mixture turbulence model k-ε Table 2 Physical properties Parameter Value oil Density[kg·m-3] 962 dynamic viscosity[Pa·s] 22.2×10-3 water Density[kg·m-3] 987.8 dynamic viscosity[Pa·s] 1.17×10-3 Model description As shown in the Fig.2 and Fig.3, the separator consists of inlet component, two perforated plates and coalescence internals.
Fig.1 Coalescence mechanism of inclined plates type coalescence component Numerical Method Computational fluid dynamics (CFD) is an effective approach to analyze the hydrodynamics in multiphase fluid.
As the specialized and widespread use CFD software, FLUENT was adopted to simulate the oil/water separator.
Table 1 Parameter settings in Simulation process Parameter Setting inlet Velocity-inlet outlet Outflow walls no slip operation pressure[kPa] 101.325 multi-flow model Mixture turbulence model k-ε Table 2 Physical properties Parameter Value oil Density[kg·m-3] 962 dynamic viscosity[Pa·s] 22.2×10-3 water Density[kg·m-3] 987.8 dynamic viscosity[Pa·s] 1.17×10-3 Model description As shown in the Fig.2 and Fig.3, the separator consists of inlet component, two perforated plates and coalescence internals.