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Online since: October 2010
Authors: Andreas Ludwig, Meng Huai Wu, Monika Grasser, Jing Hao
The so defined thermodynamic information is coupled with solidification simulation.
For this, CFD calculations are done with a two phase solidification model including mass, momentum, energy and concentration transfer and applied to semi-continuous casting of technical Bronze alloys.
The validated thermodynamic information is included in CFD calculations for solidification simulation based on the multiphase model published by the authors [6-9] and applied to Bronze semi-continuous casting.
Simulation Results.
The ternary thermodynamics is coupled to solidification simulation [11].
For this, CFD calculations are done with a two phase solidification model including mass, momentum, energy and concentration transfer and applied to semi-continuous casting of technical Bronze alloys.
The validated thermodynamic information is included in CFD calculations for solidification simulation based on the multiphase model published by the authors [6-9] and applied to Bronze semi-continuous casting.
Simulation Results.
The ternary thermodynamics is coupled to solidification simulation [11].
Online since: September 2019
Authors: A.G. Barbosa de Lima, W.M. Paiva Barbosa de Lima, T.H. Freire de Andrade, G. Santos de Lima, N. Lima Tresena, T.R. Nascimento Porto, Ricardo Soares Gomez
In this sense, the computational fluid dynamic (CFD) technique has been used with great success in predicting complex physical problems.
It was built using the ANSYS ICEM® CFD software and contains 1974620 elements, obtained after several refinements.
Fluid physical properties and simulation procedure.
In the transient process a time step Δt= 0.05s and a total simulation time of 300s were used.
Oliveira, Applying CFD in Manufacturing of Polymer Composite Reinforced with Shape Memory Alloy via Resin Transfer Molding Process, Int.
It was built using the ANSYS ICEM® CFD software and contains 1974620 elements, obtained after several refinements.
Fluid physical properties and simulation procedure.
In the transient process a time step Δt= 0.05s and a total simulation time of 300s were used.
Oliveira, Applying CFD in Manufacturing of Polymer Composite Reinforced with Shape Memory Alloy via Resin Transfer Molding Process, Int.
Online since: January 2013
Authors: Xiao Qiu Xu, Xiao Dong Yang, Xiao Dong Yu, Jun Peng Shao, Yan Qin Zhang, Bing Wei Gao
Adopting finite volume method, oil film mesh is generated by universal finite analysis software CFD; then, carry on numerical simulations for pressure distribution and temperature distribution of the two studied hydrostatic thrust bearing under various viscosity, and make comparative analysis for difference between the two studied hydrostatic thrust bearing.
Based on the analysis of numerical simulation results, the conclusions whether oil-return groove is set for hydrostatic bearing could be received.
Simulation results reveal truly the influence of setting oil-return groove or not on hydrostatic thrust bearing, and improve structure design for hydrostatic thrust bearing.
Xiaodong Yu etc based on fluid dynamics, use the finite volume method, Numerical simulation of hydrostatic thrust bearing with the circular cavity and fan-shaped cavity[4].
In this paper, on the basis of above study, we mainly study on the multi-oil-cavity hydrostatic thrust bearing and multi-oil-pad hydrostatic thrust bearing, the numerical simulation is carried on by general finite element analysis software CFD, and make comparative analysis, finally discuss whether oil-return groove is set for hydrostatic thrust bearing.
Based on the analysis of numerical simulation results, the conclusions whether oil-return groove is set for hydrostatic bearing could be received.
Simulation results reveal truly the influence of setting oil-return groove or not on hydrostatic thrust bearing, and improve structure design for hydrostatic thrust bearing.
Xiaodong Yu etc based on fluid dynamics, use the finite volume method, Numerical simulation of hydrostatic thrust bearing with the circular cavity and fan-shaped cavity[4].
In this paper, on the basis of above study, we mainly study on the multi-oil-cavity hydrostatic thrust bearing and multi-oil-pad hydrostatic thrust bearing, the numerical simulation is carried on by general finite element analysis software CFD, and make comparative analysis, finally discuss whether oil-return groove is set for hydrostatic thrust bearing.
Online since: December 2012
Authors: Fang Wang, Chao Guo, Yan Qu, Na Jin
Simulation study on a new type of cooling device
used in heat dissipation of Server
Chao Guo1,a, Fang Wang1,b, Yan Qu1,c and Na Jin1,d
1University of Shanghai for Science and Technology,Shanghai 200093,China
a233155660@qq.com, bwang1996930@163.com, cquyan0911020105@163.com d1139819328@qq.com
Keywords: Server CPU, Heat dissipation, Evaporative cooling, Air fluid temperature simulation
Abstract: A new type of cooling device used for server is designed in this paper.
C-W.Yu and R.L.Webb[1] gave the analysis and the experiment of the PC thermal design with the help of CFD numerical simulation.
Enrico Dallago [2] combined the simulation and the experiment and research the TCP performance of the Pentium processor inside of the laptops.
Finally discuss the possibility of applying evaporative cooling of the server. 2 Temperature simulation on forced air cooling 2.1.
Webb, Thermal design of a desktop computer system using CFD analysis.Seventeenth IEEE SEMI-THERM Symposium.(2001),p18-26 [2] Enrico Dallago and Giseppe Venchi, Thermal Characterization of Compact Electronic System:A Portable PC as a study case.
C-W.Yu and R.L.Webb[1] gave the analysis and the experiment of the PC thermal design with the help of CFD numerical simulation.
Enrico Dallago [2] combined the simulation and the experiment and research the TCP performance of the Pentium processor inside of the laptops.
Finally discuss the possibility of applying evaporative cooling of the server. 2 Temperature simulation on forced air cooling 2.1.
Webb, Thermal design of a desktop computer system using CFD analysis.Seventeenth IEEE SEMI-THERM Symposium.(2001),p18-26 [2] Enrico Dallago and Giseppe Venchi, Thermal Characterization of Compact Electronic System:A Portable PC as a study case.
Online since: January 2016
Authors: Siti Sarah Ain Fadhil, Mohd Nasharuddin Mohd Jaafar, Nor Fadzilah Othman, Hasril Hasini
This paper aims to discuss the CFD analysis on the flame and flue gas temperature distribution in a full scale microgas turbine operating on syngas.
Simulation results with syngas show similar flame temperature distribution as natural gas combustion.
A computational fluid dynamics (CFD) analysis was done on a full scale micro gas turbine.
In CFD, quality of mesh plays important role for the calculation of flow properties.
Lazzaretto, Numerical simulation of a hydrogen fuelled gas turbine combustor, International Journal of Hydrogen Energy 36 (2011) 7993-8002
Simulation results with syngas show similar flame temperature distribution as natural gas combustion.
A computational fluid dynamics (CFD) analysis was done on a full scale micro gas turbine.
In CFD, quality of mesh plays important role for the calculation of flow properties.
Lazzaretto, Numerical simulation of a hydrogen fuelled gas turbine combustor, International Journal of Hydrogen Energy 36 (2011) 7993-8002
Online since: June 2014
Authors: Chun Li Lei, Zhi Yuan Rui, Yin Cheng Zhou
Simulation and analysis for cooling system of high-speed motorized spindle
LEI Chun-li1, a, RUI Zhi-yuan2,b and ZHOU Yin-cheng3,c
(1.Key Laboratory of Digital Manufacturing Technology and Application, The Ministry of Education, Lanzhou University of Technology; 2.School of Mechanical &Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China,
alclyq2004@163.com, bzhiy_rui@163.com, c376125389@qq.com)
Keywords: high-speed motorized spindle; cooling system; heat transfer; CFD
Abstract.
A general applicable method for simulation of the fluid state and the thermal distribution was applied based on the software of ANSYS CFX by Chen[9]。
The three-dimensional simulation model of motorized spindle with cooling system was established.
Mesh generation is a vital stage in CFX simulation analysis.
In this article, the CFD mesh generation style was adapted, because fluid region can be divided from solid field in this generation style.
A general applicable method for simulation of the fluid state and the thermal distribution was applied based on the software of ANSYS CFX by Chen[9]。
The three-dimensional simulation model of motorized spindle with cooling system was established.
Mesh generation is a vital stage in CFX simulation analysis.
In this article, the CFD mesh generation style was adapted, because fluid region can be divided from solid field in this generation style.
Online since: October 2010
Authors: Ye Feng Liu, Hua Zhang, Huan Huan Zhao, Yu Lin Cai, Hai Tao Huang, Jun Yao
So the
temperature field was simulated by the application of the CFD software, as shown in Fig.2, Which
the actual temperature field was measured by the infrared imaging system.
Table 1 lists the results of simulation and measurement temperature field.
Comparing between simulation and measurement temperature data, it shows that simulation results are in good agreement with experimental data.
CFD method can solve the steady heat transfer.
The results demonstrate effectiveness of the simulation results.
Table 1 lists the results of simulation and measurement temperature field.
Comparing between simulation and measurement temperature data, it shows that simulation results are in good agreement with experimental data.
CFD method can solve the steady heat transfer.
The results demonstrate effectiveness of the simulation results.
Online since: July 2014
Authors: Li Sheng Liu, Qing Zheng Meng, Cheng Yang, Zhen Wang
This paper calculate water hammer pressure based on computational fluid dynamics [5-6] (CFD) method.
CFX is the first CFD software who have achieved a breakthrough on the complex geometry of the mesh and solution, leading the development of a new generation of high-performance commercial CFD software by virtue of its unique technology.
Data for the simulation model were obtained from experiment information.
The boundary conditions play an important role in numerical simulation.
Simulation results After all the simulations, it is evident that shape of pipe disproportionately affects in waveform, amplitude, period, attenuation of the water hammer wave.
CFX is the first CFD software who have achieved a breakthrough on the complex geometry of the mesh and solution, leading the development of a new generation of high-performance commercial CFD software by virtue of its unique technology.
Data for the simulation model were obtained from experiment information.
The boundary conditions play an important role in numerical simulation.
Simulation results After all the simulations, it is evident that shape of pipe disproportionately affects in waveform, amplitude, period, attenuation of the water hammer wave.
Online since: July 2012
Authors: Ya Xin Su, Cui Wu Chen
Fig 2 presents the mesh for CFD calculation.
Numerical simulation of combustion of natural gas with high-temperature air.
Numerical simulations of highly preheated air combustion in an industrial furnace.
Simulation of high temperature air combustion with modified Eddy-Break-Up combustion model.
Numerical simulation of properties of a LPG flame with high-temperature air.
Numerical simulation of combustion of natural gas with high-temperature air.
Numerical simulations of highly preheated air combustion in an industrial furnace.
Simulation of high temperature air combustion with modified Eddy-Break-Up combustion model.
Numerical simulation of properties of a LPG flame with high-temperature air.
Online since: January 2013
Authors: A.S. Noskov, A.V. Khait, V.N. Alekhin
Yeltsin
a haitanatoliy@gmail.com, hait@mail.ru, b referetSF@yandex.ru
Keywords: Ranque-Hilsch effect, energy separation, temperature separation, vortex tube, computational fluid dynamics, numerical simulation, energy conservation equation.
Standard k-ε turbulence model had been used in the simulations.
Numerical solution of the equations system was carried out in open source CFD software OpenFOAM.
Numerical simulation results Results of numerical simulations of air spiral flow with use of all three types of energy conservation equation are presented on Fig. 2 and Fig. 3.
Turbulence modeling for CFD.
Standard k-ε turbulence model had been used in the simulations.
Numerical solution of the equations system was carried out in open source CFD software OpenFOAM.
Numerical simulation results Results of numerical simulations of air spiral flow with use of all three types of energy conservation equation are presented on Fig. 2 and Fig. 3.
Turbulence modeling for CFD.