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Online since: May 2012
Authors: Jin Feng Wang, Jing Xie, Chen Miao, Yi Zheng, Yi Tang
CFD simulation approach
A huge cold store chosen as the object in this study was 48m(L)×46m(W)×6m(H), which was planned to be built by a low-temperature logistics company.
The empty CFD store model was showed as Fig.1 (a).
CFD simulation of effects of operating parameters and product on heat transfer and moisture loss in the stack of bagged potatoes[J].
Effect of design parameters on flow and temperature fields of a cold store by CFD simulation[J].
Simulation of air- to-refrigerant fin-and-tube heat exchanger with CFD-based air propagation[J].
The empty CFD store model was showed as Fig.1 (a).
CFD simulation of effects of operating parameters and product on heat transfer and moisture loss in the stack of bagged potatoes[J].
Effect of design parameters on flow and temperature fields of a cold store by CFD simulation[J].
Simulation of air- to-refrigerant fin-and-tube heat exchanger with CFD-based air propagation[J].
Online since: December 2013
Authors: Jian Hua Fang, Qiang Ji, Yi Qi Zhou, De Li Zhu
Through CFD simulation computation and practical measuring tests of above three parameters for practical muffler with complex configurations, the mathematical relation of them was proved to be correct.
With the development of computer technique, CFD method was becoming to a valid method for studying pressure loss of mufflers [1-3], which proved the validity of CFD method in muffler simulation research.
CFD Simulation Analysis on Typical Resistance Mufflers In this paper, typical resistance mufflers included typical expanding muffler, insert-pipe muffler and perforated pipe muffler.
[3] Hu X D, Zhou Y Q, Fang J H, et al, Muffler Structure Optimization Research of Digging Machine Based on CFD, Journal of System Simulation. 13(2007)3126-3129
[4] Fang J H, Zhou Y Q, Hu X D, et al, CFD Simulation of Exhaust Muffler with Complicated Structures for an Excavator, Transaction s of CSICE. 1(2009)68-73
With the development of computer technique, CFD method was becoming to a valid method for studying pressure loss of mufflers [1-3], which proved the validity of CFD method in muffler simulation research.
CFD Simulation Analysis on Typical Resistance Mufflers In this paper, typical resistance mufflers included typical expanding muffler, insert-pipe muffler and perforated pipe muffler.
[3] Hu X D, Zhou Y Q, Fang J H, et al, Muffler Structure Optimization Research of Digging Machine Based on CFD, Journal of System Simulation. 13(2007)3126-3129
[4] Fang J H, Zhou Y Q, Hu X D, et al, CFD Simulation of Exhaust Muffler with Complicated Structures for an Excavator, Transaction s of CSICE. 1(2009)68-73
Online since: August 2014
Authors: Natapol Korprasertsak, Thananchai Leephakpreeda, Nataporn Korprasertsak
In this study, we perform CFD simulation (Utilizing XFlow CFD [5]) of a designed wind booster in order to analyze what effects it has on a wind stream that lead to an increase in the overall angular speed of the vertical axis wind turbine (VAWT) at low wind speed conditions of approximately 1 m/s to 8 m/s.
CFD simulation of wind flow through the wind booster.
The experiment is performed based on CFD simulation.
Fig. 5 shows the example of CFD simulation at steady state of rotation of the standalone wind turbine (a), and the wind turbine which is equipped with the booster (b).
Retrieved from http://www.xflow-cfd.com/
CFD simulation of wind flow through the wind booster.
The experiment is performed based on CFD simulation.
Fig. 5 shows the example of CFD simulation at steady state of rotation of the standalone wind turbine (a), and the wind turbine which is equipped with the booster (b).
Retrieved from http://www.xflow-cfd.com/
Online since: October 2011
Authors: Wei Zheng Zhang, Yan Wang, Xue Xing Ding, Shu Rong Yu
Liquid Film Features Analysis on Mechanical Seals with Micro-pore Face by CFD
Weizheng Zhang1,a, Shurong Yu1,b, Yan Wang1,c, Xuexing Ding1,d
1 College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China
azhangweiz@163.com, byusr@lut.cn, civy132@163.com, ddingxx1@163.com
Keywords: mechanical seals, micro-pores face, stiffness, CFD, numerical simulation
Abstract.
This paper selected the film which was the type of cylindrical porous section contour line for CFD simulation.
This simulation conclusion was consistent with the theoretical data [7].
Fluid state analysis on flow field of gas seal with spiral groove based on CFD. [ J ].
Numerical simulation of computational fluid dynamics( CFD) of the micro-scale flow field in the spiral groove dry gas seals[J].Chemical Engineering&Machinery, 36( 5) : 287-290.
This paper selected the film which was the type of cylindrical porous section contour line for CFD simulation.
This simulation conclusion was consistent with the theoretical data [7].
Fluid state analysis on flow field of gas seal with spiral groove based on CFD. [ J ].
Numerical simulation of computational fluid dynamics( CFD) of the micro-scale flow field in the spiral groove dry gas seals[J].Chemical Engineering&Machinery, 36( 5) : 287-290.
Online since: July 2014
Authors: Amol Devidas Gawde, Pradyumna R. Dhamangaonkar
This work also deals with validation of calculated orifice diameter through CFD simulation for pressure drop in pipe line.
CFD simulation used to validate given orifice diameter was correct for given pressure drop.CFD Post software was used for post processing.
For evaluating the performance of CFD simulation, around 106 iteration were performed.
Results and Discussion Validation of orifice plate used in experimental setup is done through CFD simulation.
It is found that, the difference between theoretically calculated pressure drop value and CFD simulation result value is approximately same at distance in between 17D to 19D in downstream.
CFD simulation used to validate given orifice diameter was correct for given pressure drop.CFD Post software was used for post processing.
For evaluating the performance of CFD simulation, around 106 iteration were performed.
Results and Discussion Validation of orifice plate used in experimental setup is done through CFD simulation.
It is found that, the difference between theoretically calculated pressure drop value and CFD simulation result value is approximately same at distance in between 17D to 19D in downstream.
Online since: February 2013
Authors: Lin Li, Jun Luo, Chang Ji Shan
The result manifests that the employment of CFD simulation technology to hydraulic muffler can provide evident theoretical support for further development and study of hydraulic muffler, and is possible to lay a foundation for continuous studies of the hydraulic muffler.
In the CFD simulation process, the pressure periodic variation signal has to be achieved from the TABLE files
The Fluid Analysis of Rectangular Wave Signals’ CFD When the system gives out the rectangular wave signal as the input signal[5]-[6] as released in Fig. 3, the analytical results of CFD fluids will be as shown in Fig. 4 and Fig. 5.
Conclusion It can be indebted from the above fluid analysis on the basis of the rectangular wave input signals of hydraulic muffler, which helps to have a further understanding of the CFD fluid simulation function and lay a foundation for the further study of hydraulic muffler [7].
[6] Xiao-bing, Deng: A Study of the Uncondensed Large Eddy Simulation,Beijing: The Graduate Department of China Air Dynamic Researches and Development centers, 2008, p:47-68
In the CFD simulation process, the pressure periodic variation signal has to be achieved from the TABLE files
The Fluid Analysis of Rectangular Wave Signals’ CFD When the system gives out the rectangular wave signal as the input signal[5]-[6] as released in Fig. 3, the analytical results of CFD fluids will be as shown in Fig. 4 and Fig. 5.
Conclusion It can be indebted from the above fluid analysis on the basis of the rectangular wave input signals of hydraulic muffler, which helps to have a further understanding of the CFD fluid simulation function and lay a foundation for the further study of hydraulic muffler [7].
[6] Xiao-bing, Deng: A Study of the Uncondensed Large Eddy Simulation,Beijing: The Graduate Department of China Air Dynamic Researches and Development centers, 2008, p:47-68
Online since: January 2013
Authors: Hui Jun Zhao, Xiao Ming Yuan, Jing Yi Qu
Numerical Simulation of Double Inlet Cylinder Cyclone Using CFD
YUAN XIAO MING1, a, ZHAO HUI JUN1 and QU JING YI2
1School of Petroleum Engineering, Changzhou University,China,213000
2 Sinopec Qingdao LNG Co., Ltd, China, 266400
amagic_ming_c4@126.com
Keywords: Cylindrical Cyclone; Numerical Simulation; Oil/Water Separation; Double Inlet; CFD
Abstract.
And now, the CFD technology, with the advantage of less investment and shorter processing, is widely used.
Taking the CFD technology to predict internal flow field characteristics and separation efficiency of hydrocyclone has been very mature.
Numerical simulation of turbulent flow Basic control equation.
During the simulation, inlet velocity is 5m/s, discrete phase (oil) of the volume fraction of 8%, based on the simulation results are obtained after processing, the hydrocyclone flow characteristics.
And now, the CFD technology, with the advantage of less investment and shorter processing, is widely used.
Taking the CFD technology to predict internal flow field characteristics and separation efficiency of hydrocyclone has been very mature.
Numerical simulation of turbulent flow Basic control equation.
During the simulation, inlet velocity is 5m/s, discrete phase (oil) of the volume fraction of 8%, based on the simulation results are obtained after processing, the hydrocyclone flow characteristics.
Online since: June 2012
Authors: Qing Jian Jia, Ning Zhao
Research on windage power loss of spur gear base on CFD
Ning Zhaoa, Qing-jian Jiab
(School of Mechantronics,Northwest Polytechnical University,Xi’ an 710072 China)
azhaon@nwpu.edu.cn, bjiaqj066@sohu.com
Keyword: Windage, Power loss, Spur gear, Computational Fluid Dynamics (CFD), Oil-air mixture
Abstract.
The paper established three-dimensional Computational fluid dynamic (CFD) model of the oil-air mixture in the gearbox after meshing by ICEM CFD simulated the turbulence model by the CFD.
And some investigator carried out studies on the windage losses of the spur gear and bevel gear using the CFD simulation [2-6], the result is agree with the experiment.
Reference [1] CHEN Shixuan The windage problem of the Aeroengine gear transmission system Journal of Aeroapace Power Vol.8 No.3 July 1993(in Chinese) [2] Investigations on CFD simulation for predicting windage power loss in spur gears.3rd International Conference on Integrity, Reliability and Failure, Porto/ Portugal, 20-24 July 2009 .Paper Ref: S0602_P0222 [3] K Al-Shibl, K Simmons, C N Eastwick.
The application of CFD to model windage power loss from a spiral bevel gear.
The paper established three-dimensional Computational fluid dynamic (CFD) model of the oil-air mixture in the gearbox after meshing by ICEM CFD simulated the turbulence model by the CFD.
And some investigator carried out studies on the windage losses of the spur gear and bevel gear using the CFD simulation [2-6], the result is agree with the experiment.
Reference [1] CHEN Shixuan The windage problem of the Aeroengine gear transmission system Journal of Aeroapace Power Vol.8 No.3 July 1993(in Chinese) [2] Investigations on CFD simulation for predicting windage power loss in spur gears.3rd International Conference on Integrity, Reliability and Failure, Porto/ Portugal, 20-24 July 2009 .Paper Ref: S0602_P0222 [3] K Al-Shibl, K Simmons, C N Eastwick.
The application of CFD to model windage power loss from a spiral bevel gear.
Online since: February 2012
Authors: Su Ying Yan, Su Fang Xing, Wei Wei Zhang
E-mail address: zhangweiwei1978@163.com
Keywords: parallel connected manifolds, numerical simulation, flow distribution, pressure
Abstract.
The simulated results are compared with the experimental data by Luo et al. and satisfactory agreements are found between the simulations and experiment.
Some simulations on flow distribution and pressure drop of plate heat exchangers have been presented by a large number of investigators.
The simulation domain and boundary condition arrangement 3 Results and Discussion The computation was performed by using commercial software FLUENT 6.3.
(2) Using the proposed CFD model, the influences of flow rate on the flow distribution were investigated.
The simulated results are compared with the experimental data by Luo et al. and satisfactory agreements are found between the simulations and experiment.
Some simulations on flow distribution and pressure drop of plate heat exchangers have been presented by a large number of investigators.
The simulation domain and boundary condition arrangement 3 Results and Discussion The computation was performed by using commercial software FLUENT 6.3.
(2) Using the proposed CFD model, the influences of flow rate on the flow distribution were investigated.
Online since: February 2012
Authors: Qi Dou Zhou, Ming Zhou Chen, Zhi Yong Xie
The results of CFD agree well with experimental data.
Basic Theory The numerical simulations are based on RANS equations closed by realizable k-ε model.
Validation of CFD Method Geometric Model.
Simulation with no propeller was firstly conducted in both 3-cycle and 4-cycle inflow, and nominal velocity distribution were gotten at propeller plane.
The corrected results of CFD show that CFD has enough accuracy for predicting unsteady propeller forces.
Basic Theory The numerical simulations are based on RANS equations closed by realizable k-ε model.
Validation of CFD Method Geometric Model.
Simulation with no propeller was firstly conducted in both 3-cycle and 4-cycle inflow, and nominal velocity distribution were gotten at propeller plane.
The corrected results of CFD show that CFD has enough accuracy for predicting unsteady propeller forces.