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Online since: August 2011
Authors: Cun Xiang Liu, Jun Hui Zhang, Da Xu Zhao
Tests and simulations provide strong proofs for the structure design and motion control of the robot.
CFD (Computational Fluid Dynamics) software package is used to pre-process (including geometric modeling and mesh generation), calculate and analyze the flow field force acting on robot [7].
The dynamics equation based on space operator algebraic (SOA) method is established, and flow field acting on the robot pre-calculated by CFD software package, on this basis, the dynamic behavior of the in-pipe robot has been analyzed.
Numerical Simulation and Experimental Study for Vascular Interventional Treatment by Bifurcated Artery[D].
Collaborative Simulation Based on MATLAB/Simulink and FLUENT. 2007, 19(1) 1824-1827, 1856(in Chinese).
CFD (Computational Fluid Dynamics) software package is used to pre-process (including geometric modeling and mesh generation), calculate and analyze the flow field force acting on robot [7].
The dynamics equation based on space operator algebraic (SOA) method is established, and flow field acting on the robot pre-calculated by CFD software package, on this basis, the dynamic behavior of the in-pipe robot has been analyzed.
Numerical Simulation and Experimental Study for Vascular Interventional Treatment by Bifurcated Artery[D].
Collaborative Simulation Based on MATLAB/Simulink and FLUENT. 2007, 19(1) 1824-1827, 1856(in Chinese).
Online since: December 2013
Authors: Mohammad Mobassher Bin Tofa, Adi Maimun, Yasser Mohamed Ahmed, Saeed Jamei, Ab Saman Kader, Hassan Abyn
Chaplin et al. [5] reviewed and compared Some existing CFD codes for riser VIV analysis Experimental details for a long riser under a variety of current conditions were presented by Trim et al. [6].
Chaplin et al. [5] reviewed Some existing CFD codes for analyzing VIV for practical riser.
Holmes et al. [8] used a fully 3D simulation approach to analyze riser VIV.
[7] Holmes, S., Oakley, O.H., Constantinides, H. (2006), “Simulation of Riser VIV Using Fully Three Dimensional CFD Simulations,” OMAE 2006-92124, 25th International Conference on Offshore Mechanics and Artic Engineering, Hamburg, Germany
Mukundan, H, Triantafyllou, M.S. (2006), “Riser Modal Identification in CFD and Full-scale Experiments”, Journal of Fluids and Structures, Vol 22, pp 905-917
Chaplin et al. [5] reviewed Some existing CFD codes for analyzing VIV for practical riser.
Holmes et al. [8] used a fully 3D simulation approach to analyze riser VIV.
[7] Holmes, S., Oakley, O.H., Constantinides, H. (2006), “Simulation of Riser VIV Using Fully Three Dimensional CFD Simulations,” OMAE 2006-92124, 25th International Conference on Offshore Mechanics and Artic Engineering, Hamburg, Germany
Mukundan, H, Triantafyllou, M.S. (2006), “Riser Modal Identification in CFD and Full-scale Experiments”, Journal of Fluids and Structures, Vol 22, pp 905-917
Online since: September 2008
Authors: Naomi Kato, Hiroyoshi Suzuki
Next, it presents the development of
CFD-based motion simulator for guidance and control of PLATYPUS[4].
We have developed a CFD-based motion simulator for guidance and control of PLATYPUS.
Point to Point (PTP) Control Simulation using Fuzzy Control Algorithm.
We analyzed fluid-structure interaction using FEM program and CFD program iteratively at each step.
Fukui: Motion Simulation of an Underwater Vehicle with Mechanical Pectoral Fins Using a CFD-based Motion Simulator, Int.
We have developed a CFD-based motion simulator for guidance and control of PLATYPUS.
Point to Point (PTP) Control Simulation using Fuzzy Control Algorithm.
We analyzed fluid-structure interaction using FEM program and CFD program iteratively at each step.
Fukui: Motion Simulation of an Underwater Vehicle with Mechanical Pectoral Fins Using a CFD-based Motion Simulator, Int.
Online since: October 2013
Authors: Xi Bing Li, Dong Sheng Li, Yun Shi Ma, Jian Jia Wang, Xun Wang, Ming Zhu Li
Ma1, e
and Mingzhu Li1, f
1Qiqihar University, Qiqihar, Heilongjiang, 161006, China
alds911@163.com, blxbwjj@163.com, cwangjianjia@126.com, d2494245130@qq.com, e376223524@qq.com, f45525598@qq.com
Keywords: Vertical lathe; Hydrostatic thrust bearing; Feedback; CFD; Fluent
Abstract.
Then the hydrostatic thrust bearing temperature field distribution and lubricating properties were obtained with the use of computational fluid dynamics (CFD) theory and the finite volume method combined with the segregated solver of FLUENT.
The radial air bearing pressure field of the numerical simulation was done by Liu Bin using the finite difference method.
Simulation was repeated in trial until the calculation results basically does not change with the number of grid changes.
Han: Journal of System Simulation.
Then the hydrostatic thrust bearing temperature field distribution and lubricating properties were obtained with the use of computational fluid dynamics (CFD) theory and the finite volume method combined with the segregated solver of FLUENT.
The radial air bearing pressure field of the numerical simulation was done by Liu Bin using the finite difference method.
Simulation was repeated in trial until the calculation results basically does not change with the number of grid changes.
Han: Journal of System Simulation.
Online since: July 2014
Authors: Jiang Chuan Liu, Zhi Gang Yin, Wei Ji
The numerical simulation of the flow field in the micro-pressure inner loop reactor
LIU Jiang-chuan1, a, YIN Zhi-gang1,b and JI Wei1,c
1School of Water Resources and Environmental Engineering, Changchun Institute of Technology, Changchun 130012, China
aLiujiangchuan@yeah.net, bYinzhigang1972@163.com, cJiwei2012gc@163.com
Keywords: the micro-pressure inner loop reactor, numerical simulation, mixture model
Abstract.
The continuity equation: The Momentum equation is got though the summation of all respective phase momentum equation, it can be represented as the following: The relative speed is defined as the second phase: The relationship between the relative speeds and the drift velocity can be represented by the following formula: The equation of volume fraction: Numerical Simulation The micro-pressure inner loop reactor which is used in this model is shown as the figure 3, The length of the container is 80 cm, The height of the container is 60 cm, The width which is located at the top of the right side of the tube is 8 cm, and the height is 30 cm, it is connected with the atmosphere.
The Simulation Results and Discussion By calculating, we can get the velocity distribution field; trace the whole calculation domain and the volume fraction of air, the calculation results are shown in the figure 4 to figure 7. (1)The figure 4 is a velocity vector diagram of the hybrid model, the boundary of the contact with the atmospheric outlets meets the reality, because the gas which is squeezed out constantly can cause the velocity of gas-liquid mixing, and the velocity vector is Sometimes positive, sometimes the reverse.
Numerical Simulation and Experimental Study on Micro-Pressure Internal Circulation Reactor, J.
Edi.), 14(4). 11-14(2013) (In Chinese) [7] XU W, YU G, XUE C H, etal, Biochemical Changes Associated with Fast Fermentation of Squid Processing By-Products for Low Salt Fish Sauce, Food Chemistry, 107(4).1597-1604(2008) (In Chinese) [8] XIAO Hao-fei, ZHOU Mei-hua, CFD Simulation of Gas-Liquid Flow in Aeration Tank, Journal of Anhui Agri.
The continuity equation: The Momentum equation is got though the summation of all respective phase momentum equation, it can be represented as the following: The relative speed is defined as the second phase: The relationship between the relative speeds and the drift velocity can be represented by the following formula: The equation of volume fraction: Numerical Simulation The micro-pressure inner loop reactor which is used in this model is shown as the figure 3, The length of the container is 80 cm, The height of the container is 60 cm, The width which is located at the top of the right side of the tube is 8 cm, and the height is 30 cm, it is connected with the atmosphere.
The Simulation Results and Discussion By calculating, we can get the velocity distribution field; trace the whole calculation domain and the volume fraction of air, the calculation results are shown in the figure 4 to figure 7. (1)The figure 4 is a velocity vector diagram of the hybrid model, the boundary of the contact with the atmospheric outlets meets the reality, because the gas which is squeezed out constantly can cause the velocity of gas-liquid mixing, and the velocity vector is Sometimes positive, sometimes the reverse.
Numerical Simulation and Experimental Study on Micro-Pressure Internal Circulation Reactor, J.
Edi.), 14(4). 11-14(2013) (In Chinese) [7] XU W, YU G, XUE C H, etal, Biochemical Changes Associated with Fast Fermentation of Squid Processing By-Products for Low Salt Fish Sauce, Food Chemistry, 107(4).1597-1604(2008) (In Chinese) [8] XIAO Hao-fei, ZHOU Mei-hua, CFD Simulation of Gas-Liquid Flow in Aeration Tank, Journal of Anhui Agri.
Online since: June 2014
Authors: Hai Ming Fu, Yu Fu, Fang Xu
Overall pressure drop of pleated aerosol filters
The pressure drop of pleated air filters could be expressed as:
(5) (6)
Since
The pleat angle in equation (6) could be expressed as :
Therefore: (7)
Where, is permeability of filtration medium,; is tilt angle of filtration medium, is face flow velocity,
PRESSURE DROP SIMULATION IN PLEATED FILTRATION MEDIUM
Fluid field flow was simulation calculated by CFD software package in this paper.
In order to save computer resources, from the 80 pleats to select the four parts of them to conduct simulation.
Comparison of simulation results and experimental results was shown in table 1.The results of the simulation were different from the results of literature [3], but the simulation results were relatively close to results of experimental tests, it indicating that the simulation method of this paper was acceptable.
The simulation results of RSM turbulence model were in agreement with results of experimental test. 4.
Minimization of Resistance in Pleated-Media Air Filter Designs: Empirical and CFD Approaches.
In order to save computer resources, from the 80 pleats to select the four parts of them to conduct simulation.
Comparison of simulation results and experimental results was shown in table 1.The results of the simulation were different from the results of literature [3], but the simulation results were relatively close to results of experimental tests, it indicating that the simulation method of this paper was acceptable.
The simulation results of RSM turbulence model were in agreement with results of experimental test. 4.
Minimization of Resistance in Pleated-Media Air Filter Designs: Empirical and CFD Approaches.
Online since: June 2010
Authors: Saden H. Zahiri, Syed H. Masood, Mahnaz Z. Jahedi, Thanh Duoc Phan
Recently, a few authors have focused on the impact and deformation
behaviors of spray particle by simulation such as in [1, 2].
�umerical Method As can be seen in Fig.1, the high pressure and high temperature Helium gas was taken into a converging/diverging gun, also called de Laval nozzle, using Ansys/CFX® Computer Fluid Dynamics (CFD) simulation program.
Then, the total simulation time for explicit dynamic analysis was set as 66ns.
It should be also recognized that all the simulation were conducted without considering the oxide films and the possible adhesion between particle/substrate as well as particle/particle, which will commonly cause the bounce of particle after simulation.
With all the previous settings and from the CFD model outputs, the explicit dynamic analysis finished normally in 66ns by using Ansys/Autodyn® simulation software.
�umerical Method As can be seen in Fig.1, the high pressure and high temperature Helium gas was taken into a converging/diverging gun, also called de Laval nozzle, using Ansys/CFX® Computer Fluid Dynamics (CFD) simulation program.
Then, the total simulation time for explicit dynamic analysis was set as 66ns.
It should be also recognized that all the simulation were conducted without considering the oxide films and the possible adhesion between particle/substrate as well as particle/particle, which will commonly cause the bounce of particle after simulation.
With all the previous settings and from the CFD model outputs, the explicit dynamic analysis finished normally in 66ns by using Ansys/Autodyn® simulation software.
Online since: February 2014
Authors: Zhi‘en Liu, Yu Xu
CFD Analysis of the EGR Cooler’s Heat Transfer Performance
Zhi’en Liu 1, a, Yu Xu 1, b
Wuhan University of Technology School of Automobile, Wuhan, China 430070;
a lzen@whut.edu.cn, b smile4xy@sina.com
Keywords: EGR cooler; Heat-flux coupling; temperature field;
Abstract.
A CFD simulation of the performance of an EGR cooler was carried out.
This model based on decomposition methods was applied to the temperature field simulation under different EGR cooler rate and the simulation results were in good agreement with the experimental results.
Pic.7 Simulation result of the EGR gas-outlet part.
We got the average temperature of the outlet through simulation.
A CFD simulation of the performance of an EGR cooler was carried out.
This model based on decomposition methods was applied to the temperature field simulation under different EGR cooler rate and the simulation results were in good agreement with the experimental results.
Pic.7 Simulation result of the EGR gas-outlet part.
We got the average temperature of the outlet through simulation.
Online since: September 2013
Authors: Xu Su, Miao Wang, Jie Nan Dong, Tong Chen, Xiao Xu Li
Numerical optimization of oilfield heating furnace research
Jienan Dong *1,a ,Xu Su*2,b,Tong Chen 3,c,Miao Wang4,d,Xiaoxu Li 5,e
1,2,4,5Northeast Petroleum University, China
3Daqing Oilfield Natural Gas Company, China
a592153337@qq.com,b392884016@qq.com,ctrqchent@petrochina.com.cn,
d55836068@qq.com,e1300555999@qq.com
Keywords: Oil Field Heating Furnace, Numerical Calculation,Chemical Reaction Flow
Abstract.In this paper,using numerical simulation tools PHOENICS for numerical simulation study is made on furnace gas burning in the hearth, and analyses furnace oil furnace temperature distribution in the flow field characteristics the internal flow field of oil field heating furnace hearth temperature distribution characteristics.
Table 1 Inlet boundary conditions Load condition air mass flow (m3/h) gas flow (m3/h) gas Temperature gas pressure kPa 20% 31 300 21 4.2kPa 60% 90 900 100% 150 1500 Numeric Simulation Results and Analysis 20% load condition.
(4) Because of the complexity of the problem, software functions and the limitations of computer performance, making some calculation results of the numerical simulation and the actual situation has certain deviation.
Computational Fluid Dynamics (CFD) and its application in engineering [J].
Multiple Block Grid Generation in the Interactive Environment [J]. 1990 [6] Fujunwang.Computational fluid dynamics analysis-CFD Software Principles and Applications [M].
Table 1 Inlet boundary conditions Load condition air mass flow (m3/h) gas flow (m3/h) gas Temperature gas pressure kPa 20% 31 300 21 4.2kPa 60% 90 900 100% 150 1500 Numeric Simulation Results and Analysis 20% load condition.
(4) Because of the complexity of the problem, software functions and the limitations of computer performance, making some calculation results of the numerical simulation and the actual situation has certain deviation.
Computational Fluid Dynamics (CFD) and its application in engineering [J].
Multiple Block Grid Generation in the Interactive Environment [J]. 1990 [6] Fujunwang.Computational fluid dynamics analysis-CFD Software Principles and Applications [M].
Online since: December 2013
Authors: Yi Fan Wu, Guo Lei Zhu, Hai Jin Cheng, Yu Han Zhao
Numerical simulation of corrugated depth on the performance of plate heat exchanger
Yuhan Zhao, Yifan Wu, Haijin Cheng, Guolei Zhu
Shanghai University of Engineering Science, China
yuhanooo@hotmail.com
Keywords: corrugation depth, plate heat exchanger, numerical simulation
Abstract.
In this paper the numerical simulation is performed by using the CFD soft FLUENT.
In the following sections, numerical simulations will be explored on the flow resistance and heat transfer performance of the plate heat exchanger.
Numerical simulations on flow and heat transfer characteristics The sketch of the plate heat exchanger is shown in Fig. 1.
Simulation of stirred yoghurt processing in plate exchangers, Journal of Food Engineering, 2005, 69: 281-290
In this paper the numerical simulation is performed by using the CFD soft FLUENT.
In the following sections, numerical simulations will be explored on the flow resistance and heat transfer performance of the plate heat exchanger.
Numerical simulations on flow and heat transfer characteristics The sketch of the plate heat exchanger is shown in Fig. 1.
Simulation of stirred yoghurt processing in plate exchangers, Journal of Food Engineering, 2005, 69: 281-290