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Online since: August 2015
Authors: K. Mayilsamy, G. Murali
Tests have been simulated in CFD software for validating results.
Simulation Tests The test results of storage tank is validated by simulation in CFD-Fluent (Version 6.3.26) software.
The simulation has been held out by applying the boundary conditions of the wall with convective heat flux and ambient temperature.
The temperatures at the end of the cooling test simulation are found to be matching with the experimental outputs.
Also, it is clearly understood from the Fig .8, the cooling test results are very close to the CFD results.
Simulation Tests The test results of storage tank is validated by simulation in CFD-Fluent (Version 6.3.26) software.
The simulation has been held out by applying the boundary conditions of the wall with convective heat flux and ambient temperature.
The temperatures at the end of the cooling test simulation are found to be matching with the experimental outputs.
Also, it is clearly understood from the Fig .8, the cooling test results are very close to the CFD results.
Online since: December 2013
Authors: Song Ping Wu, Wen Xin Hou, Jie Yang
Thus computational fluid dynamics (CFD) becomes an important and efficient tool for hypersonic vehicle design.
Flow field simulation with CFD can provide much more data of different conditions than experiments with much higher accuracy than engineering calculation.
Hypersonic flow field simulation Hypersonic flow around a three-dimensional vehicle is complex due to strong shocks and their coupling effects with the viscous boundary layer.
The total number of grid nodes is above 3 million. 2.3 Simulation results The flight conditions under which flow field simulations implemented are: Ma=6.0, altitude=25Km, angle of attack α=-2°, 0°, 2°, 4°, 6°, 8°, angle of elevator deflection δ=-3°, -1.5°, 0°, 1.5°, 3°.
Therefore, the method of flow field numerical simulation and the response surface model presented can improve aerodynamic characteristics analysis reliably and efficiently.
Flow field simulation with CFD can provide much more data of different conditions than experiments with much higher accuracy than engineering calculation.
Hypersonic flow field simulation Hypersonic flow around a three-dimensional vehicle is complex due to strong shocks and their coupling effects with the viscous boundary layer.
The total number of grid nodes is above 3 million. 2.3 Simulation results The flight conditions under which flow field simulations implemented are: Ma=6.0, altitude=25Km, angle of attack α=-2°, 0°, 2°, 4°, 6°, 8°, angle of elevator deflection δ=-3°, -1.5°, 0°, 1.5°, 3°.
Therefore, the method of flow field numerical simulation and the response surface model presented can improve aerodynamic characteristics analysis reliably and efficiently.
Online since: June 2014
Authors: Qing Wang, Yu Lin Chen, Cong Cong Liu, Jian Xin Ge
Numerical simulation of the flow characteristics of 35t/h Internally circulating fluidized bed
CHEN Yulin1, a, WANG Qing2, b, LIU Congcong2, c, Ge Jianxin2, d
1Jinneng Project Management Co.
The simulation results provided a reference for the flow structure optimization of the inner circulating fluidized bed and the enlargement of the inner circulating fluidized bed boiler. 1 Introduction The inner circulating fluidized bed boiler , a type of fluidized bed different from the traditional bubbling or circulating fluidized bed, have the characteristics of rapid burning, uniform temperature, clean emission and controlled combustion process.
The simulation results provided a reference for the flow structure optimization of the inner circulating fluidized bed and the enlargement of the inner circulating fluidized bed boiler.
CFD modeling of gas-solid flow in an internally circulating fluidized bed.
Thermal Power Generation, 1999,(3), 18-29 [4] Nan Zhang, Jinghai Li. 3D CFD simulation of hydrodynamics of a 150 MWe circulating fluidized bed boiler.
The simulation results provided a reference for the flow structure optimization of the inner circulating fluidized bed and the enlargement of the inner circulating fluidized bed boiler. 1 Introduction The inner circulating fluidized bed boiler , a type of fluidized bed different from the traditional bubbling or circulating fluidized bed, have the characteristics of rapid burning, uniform temperature, clean emission and controlled combustion process.
The simulation results provided a reference for the flow structure optimization of the inner circulating fluidized bed and the enlargement of the inner circulating fluidized bed boiler.
CFD modeling of gas-solid flow in an internally circulating fluidized bed.
Thermal Power Generation, 1999,(3), 18-29 [4] Nan Zhang, Jinghai Li. 3D CFD simulation of hydrodynamics of a 150 MWe circulating fluidized bed boiler.
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: October 2013
Authors: Xiao Liu, Jie Guo, Sheng Jing Tang
H.Jin [10] calculated the axis force by CFD method.
This paper used the CFD numerical method, and calculated the numerical value of the TTCP wrap-around fins and the planar fins.
The tendency of the curves are alike and the difference should be smaller than the numerical simulation because the convergence condition.
J: Simulation-Based Optimization Design for Fins of a Missile with Wrap-Around Fins (MS.
Z: Journal of System Simulation, Vol.20 (2008) No.13, p. 3401-3403
This paper used the CFD numerical method, and calculated the numerical value of the TTCP wrap-around fins and the planar fins.
The tendency of the curves are alike and the difference should be smaller than the numerical simulation because the convergence condition.
J: Simulation-Based Optimization Design for Fins of a Missile with Wrap-Around Fins (MS.
Z: Journal of System Simulation, Vol.20 (2008) No.13, p. 3401-3403
Online since: March 2015
Authors: Ali Asmayou, Amir Khalid, Izzuddin Zaman, Bukhari Manshoor
Raja, Batu Pahat, Johor Malaysia
abukhari@uthm.edu.my, bali.smew@yahoo.com, camirk@uthm.edu.my, dizzuddin@uthm.edu.my
Keywords: CFD, Fractal, Mixing, Stirred tank
Abstract.
In order to achieve the objective, the simulation of palm oil-methanol mixing was carried out by using ANSYS Fluent software.
The model of stirred tank that was set up for the simulation work is shown in Figure 2.
In the beginning of the transient simulations, a higher concentration of methanol could be observed at the inlet.
CFD Analysis of Circle Grid Fractal Plate Thickness on Turbulent Swirling Flow, Applied Mechanics and Materials. (2014) 466: 109-113 [5] Manshoor B, Nicolleau FCGA and Beck SBM.
In order to achieve the objective, the simulation of palm oil-methanol mixing was carried out by using ANSYS Fluent software.
The model of stirred tank that was set up for the simulation work is shown in Figure 2.
In the beginning of the transient simulations, a higher concentration of methanol could be observed at the inlet.
CFD Analysis of Circle Grid Fractal Plate Thickness on Turbulent Swirling Flow, Applied Mechanics and Materials. (2014) 466: 109-113 [5] Manshoor B, Nicolleau FCGA and Beck SBM.
Online since: March 2014
Authors: S. Rakheja, G. Yan, Fan Yang
While a number of studies have investigated nonlinear dynamic fluid slosh using computation fluid dynamics (CFD) methods, the integration of a CFD model to the vehicle models has been attempted in only a few studies due to excessive computational demands of CFD analyses and extensive coordinates transformations [5,6].
Moreover, the validity of the CFD models has been demonstrated in a limited sense under nearly linear conditions.
CFD model validity is also illustrated through comparisons with the laboratory-measured data.
Simulations results are presented to illustrate anti-slosh effects of baffles in view of the braking performance.
The simulation results revealed significant interactions between the cargo and the vehicle.
Moreover, the validity of the CFD models has been demonstrated in a limited sense under nearly linear conditions.
CFD model validity is also illustrated through comparisons with the laboratory-measured data.
Simulations results are presented to illustrate anti-slosh effects of baffles in view of the braking performance.
The simulation results revealed significant interactions between the cargo and the vehicle.
Online since: October 2011
Authors: Saparudin Ariffin, Soo Poey Lam, Abdul Wahab Abas, Woon Kiow Lee
The result of the pressure drop which is obtained from simulation shows that the pressure drop in rifled tube is about 1.69-1.77 times much higher than pressure drop in smooth tube.
Therefore, the objective of the present study is to use commercial CFD software, i.e.
The use of commercial CFD software for modeling fluid flow is a very useful tool to predict the flow characteristic in the rifled tube.
Processing Fluent® which is one of the commercial CFD processing software is used as numerical solver for the three-dimensional control volume of rifled tube and smooth tube.
Correlations of single phase friction factor In order to obtain correlations of single phase friction factor for the rifled tube in the present study, the obtained data of friction factor from simulation are fitted as shown in Figure 9.
Therefore, the objective of the present study is to use commercial CFD software, i.e.
The use of commercial CFD software for modeling fluid flow is a very useful tool to predict the flow characteristic in the rifled tube.
Processing Fluent® which is one of the commercial CFD processing software is used as numerical solver for the three-dimensional control volume of rifled tube and smooth tube.
Correlations of single phase friction factor In order to obtain correlations of single phase friction factor for the rifled tube in the present study, the obtained data of friction factor from simulation are fitted as shown in Figure 9.
Online since: October 2012
Authors: Jian Feng Wu, Lu Ping Yi, Cai Hua Wang
They research less on pressure velocity coupling algorithm in numerical simulation.
CFD Numerical Simulation Control equations.
In the case of numerical simulation calculation the selected vector high is 10m.
In order to compare the effect of different pressure velocity coupling algorithm on numerical simulation results, the paper selected three kinds of algorithm in numerical simulation.
[4] Wang, F.J., Computational fluid dynamics analysis of CFD software theory and application [M].
CFD Numerical Simulation Control equations.
In the case of numerical simulation calculation the selected vector high is 10m.
In order to compare the effect of different pressure velocity coupling algorithm on numerical simulation results, the paper selected three kinds of algorithm in numerical simulation.
[4] Wang, F.J., Computational fluid dynamics analysis of CFD software theory and application [M].
Online since: May 2011
Authors: Hua Yang, Shu Hui Sun, Cheng Ying Qi, Guo Qiang Xia
The computational fluid dynamic (CFD) software AIRPAK was adopted in the evaluations.
The purpose of this paper is to evaluate thermal comfort qualitatively under non-steady state process by experiments and simulation.
Simulation of thermal comfort in the heating process On the basis of experimental research, CFD software AIRPAK was used to simulate the temperature field and thermal comfort field when electric valve was opened or closed.
The indoor two-equation turbulence model was used in the simulation.
Experimental research and simulation results show that the thermal comfort is satisfied for heating system with on-off valve regulation. 2.
The purpose of this paper is to evaluate thermal comfort qualitatively under non-steady state process by experiments and simulation.
Simulation of thermal comfort in the heating process On the basis of experimental research, CFD software AIRPAK was used to simulate the temperature field and thermal comfort field when electric valve was opened or closed.
The indoor two-equation turbulence model was used in the simulation.
Experimental research and simulation results show that the thermal comfort is satisfied for heating system with on-off valve regulation. 2.