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Online since: February 2012
Authors: Nasrul Amri Mohd Amin, Martin Belusko, Frank Bruno
In this work, the simulation was prepared using the CFD software, Ansys-CFX.
Simulation model of the Ansys-CFX Transient analyses in all the simulations use the High Resolution advection and the modified Second Order Backward Euler scheme.
The good match between the PCT of both the simulation and experimental test validating the Ansys-CFX model for charging a PCM sphere encapsulated with pins.
Simulations on sphere filled with PCM have also been done and experimentally validated.
Part 2: Dynamic simulation model for the combined system.
Simulation model of the Ansys-CFX Transient analyses in all the simulations use the High Resolution advection and the modified Second Order Backward Euler scheme.
The good match between the PCT of both the simulation and experimental test validating the Ansys-CFX model for charging a PCM sphere encapsulated with pins.
Simulations on sphere filled with PCM have also been done and experimentally validated.
Part 2: Dynamic simulation model for the combined system.
Online since: December 2013
Authors: Wei Zhong, Hong Kai Liao, Yue Xi Yu, Yan Ling Wu
Since 1970s, many researchers have done lots of worker on the modelling of shell-and-tube heat exchangers using Computational Fluid Dynamics techniques (CFD), as well as some modifications to the solution algorithm [3,4,5].
However, the CFD method couldn’t be used extensively for it’s rather time-consuming.
Simulation Modelling Practice and Theory, Vol.17 (2009), p. 897-910
Analysis and Simulation of Chemical Engineering System, China Chemical Industry Press, Beijing (1990)
Steady-state Simulation Technology of Process System, China Petrochemical Press, Beijing (1999)
However, the CFD method couldn’t be used extensively for it’s rather time-consuming.
Simulation Modelling Practice and Theory, Vol.17 (2009), p. 897-910
Analysis and Simulation of Chemical Engineering System, China Chemical Industry Press, Beijing (1990)
Steady-state Simulation Technology of Process System, China Petrochemical Press, Beijing (1999)
Online since: December 2013
Authors: Lei Zhang, Zong Liang Qiao, Feng Qi Si, Zhi Gao Xu
In fact, the experimental conditions and actual operating conditions are quite different and the numerical simulation is complex.
So it is necessary to study deeply based on the numerical simulation results and establish the relevant characteristics model.
Firstly, some numerical simulation experiments at working conditions were carried out using Fluent software.
For the comprehensive study of all the factors at different levels, 27 CFD simulation experiments were arranged according to the orthogonal experimental design method, using the Fluent software.
The average error between the regression value and CFD value is less than 1%.
So it is necessary to study deeply based on the numerical simulation results and establish the relevant characteristics model.
Firstly, some numerical simulation experiments at working conditions were carried out using Fluent software.
For the comprehensive study of all the factors at different levels, 27 CFD simulation experiments were arranged according to the orthogonal experimental design method, using the Fluent software.
The average error between the regression value and CFD value is less than 1%.
Online since: September 2013
Authors: Don Liu, Yi Fan Wang, Hai Bo Zhang
Both ALE and DLM are very accurate and comparable to direct numerical simulation (DNS).
Tezduyar, 3D simulation of fluid-particle interactions with the number of particles reaching 100, Comp.
Wang, Simulations of dispersed turbulent multiphase flow, Fluid Dyn.
Cleary, The effect of particle shape on Hopper Discharge, Second International Conference on CFD in the Minerals and Process Industries, Conference Proceeding, p.71-76 CRISO, Melbourne, Australia, Dec.6-8, 1999 [9] M.
Sherwin, Spectral/hp Element Methods for CFD.
Tezduyar, 3D simulation of fluid-particle interactions with the number of particles reaching 100, Comp.
Wang, Simulations of dispersed turbulent multiphase flow, Fluid Dyn.
Cleary, The effect of particle shape on Hopper Discharge, Second International Conference on CFD in the Minerals and Process Industries, Conference Proceeding, p.71-76 CRISO, Melbourne, Australia, Dec.6-8, 1999 [9] M.
Sherwin, Spectral/hp Element Methods for CFD.
Online since: September 2013
Authors: Kiatfa Tangchaichit, Jarupol Suriyawanakul
The well known Large Eddy Simulation technique needs high resources for computing power and time.
Introduction The well known Large Eddy Simulation (LES) turbulent model is used widely in hard disk drive (HDD) flow simulation but it needs high computing time and resources.
An alternative to CFD: piecewise linear models for frequency spectra of flow induced drag in hard disk drives.
Simulation of the Airflow Characteristic inside a Hard Disk Drive by Applying a Computational Fluid Dynamics Software.
A numerical simulation of particle trajectory in thin hard disk drive. in Apmrc 2012 Dig. 1 –2 (2012)
Introduction The well known Large Eddy Simulation (LES) turbulent model is used widely in hard disk drive (HDD) flow simulation but it needs high computing time and resources.
An alternative to CFD: piecewise linear models for frequency spectra of flow induced drag in hard disk drives.
Simulation of the Airflow Characteristic inside a Hard Disk Drive by Applying a Computational Fluid Dynamics Software.
A numerical simulation of particle trajectory in thin hard disk drive. in Apmrc 2012 Dig. 1 –2 (2012)
Online since: September 2013
Authors: Shou Guang Yao, Gong Li Wang, Qing Fang Cheng, Chang Jiang Zhou
Comparing the simulation results with the traditional CFD calculation results, we could find that the thermal lattice Boltzmann method have unique advantages in effectiveness and flexibility than the traditional calculation method.
It's different with the traditional numerical simulation methods, because of its unique background of mesoscopic particle.
Simulation results The following graphs are the simulation results of coupling distribution function models, which respectively shows the temperature distribution and velocity distribution of X direction under different Reynolds number.
Through the simulation computation, we can find: (1) Because of adopting the double distribution function, the thermal lattice Boltzmann can reduces the date error caused by compressible effect and improve the accuracy of simulation. (2) The new thermal lattice Boltzmann model has greater flexibility and adaptability on the choice of the discrete velocity model. (3) The calculation of numerical simulation results of the thermal lattice Boltzmann has good consistency with the traditional simulation results.
Lattice Boltzmann model for simulation flows with multiple phases and components [J].
It's different with the traditional numerical simulation methods, because of its unique background of mesoscopic particle.
Simulation results The following graphs are the simulation results of coupling distribution function models, which respectively shows the temperature distribution and velocity distribution of X direction under different Reynolds number.
Through the simulation computation, we can find: (1) Because of adopting the double distribution function, the thermal lattice Boltzmann can reduces the date error caused by compressible effect and improve the accuracy of simulation. (2) The new thermal lattice Boltzmann model has greater flexibility and adaptability on the choice of the discrete velocity model. (3) The calculation of numerical simulation results of the thermal lattice Boltzmann has good consistency with the traditional simulation results.
Lattice Boltzmann model for simulation flows with multiple phases and components [J].
Online since: February 2013
Authors: Eui Chul Jeong, Hee Chang Lim, Su Jeong Lee
Republic of Korea
aapdlwl11@hanmail.net, ba20lee21@naver.com, c hclim@pusan.ac.kr
Keywords:CFD, Aerodynamic characteristics, Airfoil, NACA0015, Near-wall modeling.
Abstract.In this study, a numerical simulation is made to understand the effect of the angle of attack on a NACA airfoil, which will be used for a basic shape to apply for making the vertical axis Darius wind turbine.
The y+ is a non-dimensional number to understand near wall mesh quality to describe the effect of turbulent and laminar flow used to predict the behavior using numerical simulation from the wall to the grid.
Through the numerical simulation, the current approach (the combination of k-ω SST turbulence model and y+ <1)is appropriate condition to simulate the aerodynamic characteristics around the airfoil.
B, TheDarrieus wind turbine: Proposal for a new performance prediction model based on CFD, 2011. pp. 3-8.
Abstract.In this study, a numerical simulation is made to understand the effect of the angle of attack on a NACA airfoil, which will be used for a basic shape to apply for making the vertical axis Darius wind turbine.
The y+ is a non-dimensional number to understand near wall mesh quality to describe the effect of turbulent and laminar flow used to predict the behavior using numerical simulation from the wall to the grid.
Through the numerical simulation, the current approach (the combination of k-ω SST turbulence model and y+ <1)is appropriate condition to simulate the aerodynamic characteristics around the airfoil.
B, TheDarrieus wind turbine: Proposal for a new performance prediction model based on CFD, 2011. pp. 3-8.
Online since: May 2013
Authors: Ming Liu, Yao Yao, Yu Bai
Establishing the mathematical model of fluid inside the oiling machine in the process of computer simulation and using fluid dynamics analysis software (CFD ) FLUENT to analyse numerical simulation within spraying fluid effectively.
Finally, verify the correctness and feasibility of the simulation by the contrast of the experimental and simulation data in the course of experiments.
Electrostatic oiler knife beam internal flow numerical simulation .
Conclusion Through theoretical analysis, numerical simulation and analysis, it draws the following conclusions.
[11] Hongjun Zhu, Fluid analysis and Simulation of a practical course,The people post and Telecommunications Press, 2010.
Finally, verify the correctness and feasibility of the simulation by the contrast of the experimental and simulation data in the course of experiments.
Electrostatic oiler knife beam internal flow numerical simulation .
Conclusion Through theoretical analysis, numerical simulation and analysis, it draws the following conclusions.
[11] Hongjun Zhu, Fluid analysis and Simulation of a practical course,The people post and Telecommunications Press, 2010.
Online since: April 2016
Authors: Sławomir Smoleń, Dorota Sawicka, Karol Ronewicz, Janusz T. Cieśliński
The non-premixed modeling is also appropriate for the simulation of turbulent diffusion flames with fast chemistry.
To calculate the influence of turbulence of the fluid on simulation the standard k-ε model was used.
The mass flow of the fuel for both simulations was set to 0.7 g/s.
The simulation showed, at outlet of drop-tube the average mole fraction of CO was 0.1%.
Turbulence Modeling for CFD.
To calculate the influence of turbulence of the fluid on simulation the standard k-ε model was used.
The mass flow of the fuel for both simulations was set to 0.7 g/s.
The simulation showed, at outlet of drop-tube the average mole fraction of CO was 0.1%.
Turbulence Modeling for CFD.
Online since: May 2011
Authors: Bao Long Lin, Xiao Yun Jia
Based on the conditions of Guanjiao tunnel, numerical analysis of air flow field is carried out by the finite element software—CFD in this paper.
The construction method of Guanjiao Tunnel is drilling and blasting. 10 Inclined shafts and local aid are adopted in the construction Numerical simulation of air flow inside the tunnel Differential equations.
Conclusion Ventilation of the tunnel is simulated by the finite element software—CFD in this paper.
The construction method of Guanjiao Tunnel is drilling and blasting. 10 Inclined shafts and local aid are adopted in the construction Numerical simulation of air flow inside the tunnel Differential equations.
Conclusion Ventilation of the tunnel is simulated by the finite element software—CFD in this paper.