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Online since: November 2007
Authors: Paul Stratton
Extensive CFD modelling of cooling using nitrogen jets showed that an array of high
velocity gas jets close to its surface could cool the part at a similar speed to oil.
The model When the rig had been constructed it was modelled in three dimensions with Fluent 6.0.12 CFD code.
The heat transfer data from Fluent was therefore applied to a carburised section in a metallurgical simulation program (Dante).
The model When the rig had been constructed it was modelled in three dimensions with Fluent 6.0.12 CFD code.
The heat transfer data from Fluent was therefore applied to a carburised section in a metallurgical simulation program (Dante).
Online since: March 2020
Authors: Wen Sheng Cao, Christoph Bluth
Simulation of CO2 Separation Process in Cryogenic Liquefaction
3.1.
In this simulation, HYSYS software was used for calculation, and PR and LKP physical properties packages and COMThermo database were selected.
HYSYS software is a large-scale expert system software developed by the world famous oil and gas processing simulation software engineering company.
The use of a new generation of object-oriented programming tools makes integrated engineering simulation software a reality.
[11] Roegiers Jelle, Denys Siegfried, CFD - modelling of activated carbon fibers for indoor air purification, Chemical Engineering Journal, (2019) 80-87.
In this simulation, HYSYS software was used for calculation, and PR and LKP physical properties packages and COMThermo database were selected.
HYSYS software is a large-scale expert system software developed by the world famous oil and gas processing simulation software engineering company.
The use of a new generation of object-oriented programming tools makes integrated engineering simulation software a reality.
[11] Roegiers Jelle, Denys Siegfried, CFD - modelling of activated carbon fibers for indoor air purification, Chemical Engineering Journal, (2019) 80-87.
Online since: March 2011
Authors: Ying Hua Wang, Bao Shan Jia, Jun Rui Shi, Yang Bo Deng, Yu Tian
Numerical Simulation of Ventilation Air Methane
Counter-current Oxidation Reaction
WANG Ying-Hua1, a, JIA Bao-Shan1, b, SHI Jun-Rui2, c,
DENG Yang-Bo3, d, TIAN Yu1, e
1School of Safety Science and Engineering, Liaoning Technical University, Liaoning Fuxin 123000, China
2ShenYang Institutes of Engineering, Shenyang Circulating Fluidized-bed Combustion Technology Key Laboratories Liaoning Shenyang 110136, China
3Mechanical and Electronic and Materials Engineering Institute, Dalian Maritime University, Liaoning Dalian 116026, China
awyh850903@163.com, bjbs1972@126.com, cshijunrui2002@163.com,
ddengyb1970@163.com, ety880503@126.com
Keywords: ventilation air methane; countercurrent oxidation; numerical simulation; equivalence ratio; half cycle
Abstract: In this paper, based on the theoretical analysis and reasonable simplification, one-dimensional mathematical model is presented for the counter-current oxidation of ventilation air methane.
The process of counter-current oxidation reaction is simulated by applying the computational fluid dynamics (CFD) software (Fluent), and the effect of the dominating working parameters (such as flow velocity and equivalence ratio and half cycle) are discussed on the temperature and rate of reaction within the counter-current oxidation reaction.
are simplified as follows: Inlet: , Outlet: Outer wall temperature: Initial temperature: 2 Simulated results and analysis Based on the simulation research of the countercurrent oxidation device, the burning mechanism and characteristics are understood, and the effects of different working parameters are obtained on the combustion characteristics.
Porous medium reciprocating flow burning a numerical simulation.
Numerical Simulation on Reciprocating Super adiabatic Combustion Of Premixed Gases in Porous Media Journal Combustion science and technology, 2005 11(3),pp.230-235
The process of counter-current oxidation reaction is simulated by applying the computational fluid dynamics (CFD) software (Fluent), and the effect of the dominating working parameters (such as flow velocity and equivalence ratio and half cycle) are discussed on the temperature and rate of reaction within the counter-current oxidation reaction.
are simplified as follows: Inlet: , Outlet: Outer wall temperature: Initial temperature: 2 Simulated results and analysis Based on the simulation research of the countercurrent oxidation device, the burning mechanism and characteristics are understood, and the effects of different working parameters are obtained on the combustion characteristics.
Porous medium reciprocating flow burning a numerical simulation.
Numerical Simulation on Reciprocating Super adiabatic Combustion Of Premixed Gases in Porous Media Journal Combustion science and technology, 2005 11(3),pp.230-235
Online since: May 2011
Authors: Dan Zhang, Zhi Fang Yin, Hong Ming Fan, Kai Yuan He
Through theoretical analysis and numerical simulation, take "Siamese model” results as the boundary condition and establish a mathematical model of rail transit hub with CFX.
Through theoretical analysis and numerical simulation, take "Siamese model” results as the boundary condition and establish a mathematical model of rail transit hub with CFX.
This paper fully considered the actual situation of the rail transport hub, reference [3] to reach 6.22MW in 600s with heat release rate of t2 as fixed fire load, and to reach 0.026 Kg/s in 600s with gas release rate of t2 as smoke production volume in numerical simulation.
Mesh and boundary conditions ANSYS ICEM CFD is used to establish the physical model, use hexahedral mesh, and the grid is about 100 million with local location refinement of fire source and outlet.
Simulation results and analysis Suppose that the fan was set in 60s after the fire broke out and turn to normal operation in 90s.
Through theoretical analysis and numerical simulation, take "Siamese model” results as the boundary condition and establish a mathematical model of rail transit hub with CFX.
This paper fully considered the actual situation of the rail transport hub, reference [3] to reach 6.22MW in 600s with heat release rate of t2 as fixed fire load, and to reach 0.026 Kg/s in 600s with gas release rate of t2 as smoke production volume in numerical simulation.
Mesh and boundary conditions ANSYS ICEM CFD is used to establish the physical model, use hexahedral mesh, and the grid is about 100 million with local location refinement of fire source and outlet.
Simulation results and analysis Suppose that the fan was set in 60s after the fire broke out and turn to normal operation in 90s.
Online since: March 2017
Authors: Renan Spilka Miranda, Maria Luiza Sperb Indrusiak, Felipe Roman Centeno
The use of CFD codes, particularly those employing LES [5], is very useful for fire modelling, predicting plume characteristics, combustion products dispersion and heat transfer to adjacent bodies.
Ryder et al. [6] consider the FDS software, which was developed by the NIST (National Institute of Standards and Technology – USA), more suitable for simulation of complex geometries in actual explosion and fire analysis than multipurpose CFD codes.
Table 1 presents fuel properties used in the simulations.
Results and Discussions Simulations considering gasoline type C.
The numerical simulation was performed neglecting wind effects.
Ryder et al. [6] consider the FDS software, which was developed by the NIST (National Institute of Standards and Technology – USA), more suitable for simulation of complex geometries in actual explosion and fire analysis than multipurpose CFD codes.
Table 1 presents fuel properties used in the simulations.
Results and Discussions Simulations considering gasoline type C.
The numerical simulation was performed neglecting wind effects.
Online since: June 2013
Authors: Juan Xu, Zong Rui Hao, Bo Yan Xu, Zhong Hai Zhou
The used CFD code is AVL Fire v2008.
The simulation results at the same conditions as the PLIF experiments are shown in Fig 1 (b).
The basic parameters of the engine used in the simulation are shown in Tab 3.
The simulation of mixture formation process for the proposed combustion chamber geometry is performed.
Simulation and Visualization of Liquid Phase LPG Spray.
The simulation results at the same conditions as the PLIF experiments are shown in Fig 1 (b).
The basic parameters of the engine used in the simulation are shown in Tab 3.
The simulation of mixture formation process for the proposed combustion chamber geometry is performed.
Simulation and Visualization of Liquid Phase LPG Spray.
Online since: July 2013
Authors: Yoshifumi Ogami, Xuan Thien Dinh
Sensitivity and Response of a Triple–Axis Thermal MEMS–Based Acceleration Sensor
DINH Xuan Thiena and OGAMI Yoshifumib
Ritsumeikan University, 1–1–1 Nojihigashi, Kusatsu, Shiga 525–8577 Japan
athien@cfd.ritsumei.ac.jp, by_ogami@cfd.ritsumei.ac.jp
Keywords: Thermal accelerometer, buoyancy flow, MEMS.
Simulation In order to capture the density–temperature dependence due to large temperature change, the conservative law of mass, momentum, and energy for a compressible fluid are employed to describe the thermo–fluidic phenomena in the accelerometer, which can be expressed as follows: (1) (2) (3) where , p are velocity and pressure of the fluid flow. r, cp, m, and l are density, specific heat, viscosity, and thermal conductivity of the fluid. is acceleration vector.
Simulation In order to capture the density–temperature dependence due to large temperature change, the conservative law of mass, momentum, and energy for a compressible fluid are employed to describe the thermo–fluidic phenomena in the accelerometer, which can be expressed as follows: (1) (2) (3) where , p are velocity and pressure of the fluid flow. r, cp, m, and l are density, specific heat, viscosity, and thermal conductivity of the fluid. is acceleration vector.
Online since: December 2012
Authors: Shyh Chour Huang, Kuang Hung Hsien
This study used an alternative approach based on the combination of CFD, the Taguchi method, and weight-fuzzy logic to determine the optimal design parameters of the ultrathin fan.
Confirmation Experiments Confirmation experiments were performed to test the weight-fuzzy and the Taguchi method design of the centrifugal fan, which used CFD software, Solidworks Flow Simulation.
Confirmation Experiments Confirmation experiments were performed to test the weight-fuzzy and the Taguchi method design of the centrifugal fan, which used CFD software, Solidworks Flow Simulation.
Online since: June 2014
Authors: Xue Wei Liu, Kai Luo, Yue Ming Yang, Li Min Song, Jun Jin
Implementation about Virtual Experiment for Development of Local Shockwave
Liu Xueweia, Luo Kaib, Yang Yuemingc, Song Liminc, Jin Jun c
Aviation University of Air Force,Changchun 130022,China
alisong_1@126.com,
bliminsong_2012@163.com,
climi_2014@sina.com
Keywords: Virtual Experiment;Local Shockwave;Aerodynamics;Software Design
Abstract: The virtual experiment for development of local shockwave, which is one of a series of virtual experiment software that have been accomplished based on numerical simulation and modern computer technologies by the authors, was taken as an example, the design principles, modules constitution, developing tools, and experiment courses were introduced.
Developing Aerodynamics or Fluid Mechanics virtual experiment software by applying modern CFD[3] and computer technologies, letting students carry on experiments under virtual circumstances, is an effectual approach to solve the above problem, and development and application of virtual experiments will influence practical teaching revolutionarily.
Based on virtual environments (simulation platforms), virtual experiments are focusing on interactive operations and simulation of experimental results[5].The emergence of virtual experiments helps to develop students' learning interest, broaden the students' knowledge, and boost theoretical knowledge studying effectively.
In order to enhance emulational degree, the numerical simulation results based on computational fluid dynamics were corrected by consulting the real experimental results and a variety of professional documents.
The Role of Computer Simulation Experiments in Physics Experiments Teaching.
Developing Aerodynamics or Fluid Mechanics virtual experiment software by applying modern CFD[3] and computer technologies, letting students carry on experiments under virtual circumstances, is an effectual approach to solve the above problem, and development and application of virtual experiments will influence practical teaching revolutionarily.
Based on virtual environments (simulation platforms), virtual experiments are focusing on interactive operations and simulation of experimental results[5].The emergence of virtual experiments helps to develop students' learning interest, broaden the students' knowledge, and boost theoretical knowledge studying effectively.
In order to enhance emulational degree, the numerical simulation results based on computational fluid dynamics were corrected by consulting the real experimental results and a variety of professional documents.
The Role of Computer Simulation Experiments in Physics Experiments Teaching.
Online since: July 2015
Authors: Hong Yan Chu, Li Gang Cai, Wei Huang
Numerical Simulation Analysis of Ink Temperature Field in the Printing Process
Wei Huang1, a*, Hong Yan Chu 1, b and Li Gang Cai 1, c
1Beijing: Beijing University of Technology, China
akatytion@emails.bjut.edu.cn, bchuhongyan@bjut.edu.cn, clgcai321@yahoo.com.cn
*Corresponding author
Keywords: Printing, ink, Rotation speed, Temperature field, Numerical simulation.
In this paper, by using the Workbench CFX fluid simulation software, the ink temperature field of two extrusion ink rollers in printing press is analyzed by numerical simulation , the influence of the ink roller speed on ink temperature and the influence of ink roller thermal conductivity on the ink temperature are analyzed,.
This model is directly established by using the draw model of Workbench, because the ink layer channel thickness is very thin, and in order to improve the computing speed and accuracy, the model is meshed by Ansys ICEM CFD.
Boundary conditions Results of Numerical Simulation Calculation results are extracted from the Workbench post-processing.
Numerical simulation of the ink flow field on the printing press ink fountain roller [J].
In this paper, by using the Workbench CFX fluid simulation software, the ink temperature field of two extrusion ink rollers in printing press is analyzed by numerical simulation , the influence of the ink roller speed on ink temperature and the influence of ink roller thermal conductivity on the ink temperature are analyzed,.
This model is directly established by using the draw model of Workbench, because the ink layer channel thickness is very thin, and in order to improve the computing speed and accuracy, the model is meshed by Ansys ICEM CFD.
Boundary conditions Results of Numerical Simulation Calculation results are extracted from the Workbench post-processing.
Numerical simulation of the ink flow field on the printing press ink fountain roller [J].