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Online since: October 2014
Authors: Mujibur M. Rahman, H.Y. Rahman, T.J. Hua
Simulation using Computational Fluid Dynamics (CFD) for both cooling systems has been carried out to have better understanding.
CFD results are compared with some of the analytical results.
Two working fluids were considered for both analytical and CFD simulation, i.e., water and ethylene glycol.
Computational Fluid Dynamics (CFD) simulation is carried out for liquid cooled plate heat exchanger.
For water flow, the simulation results for five different mass flow rates were compared with analytical results (Table 3).
CFD results are compared with some of the analytical results.
Two working fluids were considered for both analytical and CFD simulation, i.e., water and ethylene glycol.
Computational Fluid Dynamics (CFD) simulation is carried out for liquid cooled plate heat exchanger.
For water flow, the simulation results for five different mass flow rates were compared with analytical results (Table 3).
Online since: February 2011
Authors: Rui Li, Liang Jing Jing, Ming Ming He
Research on CFD of Fluidization of Biomass Waste Fast Pyrolysis Reactor
Rui Li a, Liangjing Jingb and Mingming Hec
College of Materials Science and Technology, Beijing Forest University, Beijing 100083, China
aboxlr@126.com, bliangjing777@163.com
Keywords: Pyrolysis; Fluidization; Simulation; Reactor.
The understanding of computational fluid dynamics (CFD) of its fluidized bed is necessary basis for particulate heat transfer and pyrolysis kinetics research.
Therefore, the CFD method and values of parameters used in this paper can apply to the calculation of fast pyrolysis fluidized bed reactor.
Fig.4 Simulation results on the pressure Fig.5 Experimental data on the pressure Simulation results under the cold state.
The simulation results of the pressure in the reactor are in good agreement with the simulation results and experiment data, and the resultant error is lower than 10%.
The understanding of computational fluid dynamics (CFD) of its fluidized bed is necessary basis for particulate heat transfer and pyrolysis kinetics research.
Therefore, the CFD method and values of parameters used in this paper can apply to the calculation of fast pyrolysis fluidized bed reactor.
Fig.4 Simulation results on the pressure Fig.5 Experimental data on the pressure Simulation results under the cold state.
The simulation results of the pressure in the reactor are in good agreement with the simulation results and experiment data, and the resultant error is lower than 10%.
Online since: November 2012
Authors: Liang Zhang, Khalid Syed Shah
China (Harbin)
1, 2Deep Water Engineering Research Centre (Harbin Engineering University)
ashahkhalidshah@yahoo.com (corresponding author), bzhangliang@hrbeu.edu.cn
Keywords: Tidal energy, Vertical axis tidal turbine, Renewable energy, CFD, CFX simulation, Variable pitch
Abstract.
The modeling and meshing of turbine rotor is performed in ICEM-CFD.
ICEM CFD is used to model a rotor domain, blade domain and stationary fluid domain.
Discussion & Conclusion A comprehensive CFD study is carried out for variable pitch VATT in ANSYS CFX, and numbers of hydrodynamic parameters are studied.
Airfoil optimization of vertical-axis turbines based on CFD method. 2nd International conf. on computer modeling & simulation (2010), p.199-202
The modeling and meshing of turbine rotor is performed in ICEM-CFD.
ICEM CFD is used to model a rotor domain, blade domain and stationary fluid domain.
Discussion & Conclusion A comprehensive CFD study is carried out for variable pitch VATT in ANSYS CFX, and numbers of hydrodynamic parameters are studied.
Airfoil optimization of vertical-axis turbines based on CFD method. 2nd International conf. on computer modeling & simulation (2010), p.199-202
Online since: May 2011
Authors: Guang Xue Chen, Bao Lin Tang, Qi Feng Chen, Shi Lin Yuan, Jing Lei Tai
Key words: Inkjet; CFD; Equipment; Hydrokinetics
Abstract.
According to the analysis of theoretical calculation and CFD, we designed a new type of equipment for supplying ink, including the structure of the transition pipe.
The computer simulation of the ink flowing in the pressure automatic adjustment equipment The software and mathematical model of the computer simulation.
In the FLUENT software, as long as given with the physical properties of the fluid simulation, mathematical models, algorithms and the corresponding initial conditions, the simulation software would simulate the flow patterns of the fluid, furthermore, the numerical results were calculated and shown by the graphical visualization [6, 7].
Figure 1 The structural design of the supplying ink equipment The computer simulation results.
According to the analysis of theoretical calculation and CFD, we designed a new type of equipment for supplying ink, including the structure of the transition pipe.
The computer simulation of the ink flowing in the pressure automatic adjustment equipment The software and mathematical model of the computer simulation.
In the FLUENT software, as long as given with the physical properties of the fluid simulation, mathematical models, algorithms and the corresponding initial conditions, the simulation software would simulate the flow patterns of the fluid, furthermore, the numerical results were calculated and shown by the graphical visualization [6, 7].
Figure 1 The structural design of the supplying ink equipment The computer simulation results.
Online since: January 2011
Authors: Xin Hua Wang, Shu Wen Sun, Jia Qing Chang, Gang Zheng
By the CFD(computational fluid dynamics) simulation, firstly, the pressure distributions of the flapper face and the fore end face of the nozzle are obtained.
T. [3] did some simulation research on hydraulic bridge of water hydraulic valve by CFD software, and got some results on the flow force of the flapper different from the present paper.
Software Simulation of the Hydraulic Bridge Based on the formula deductions above, the simulation model is therefore established to compute simplified hydraulic bridge.
Fig. 3 Simulation model of the hydraulic bridge Fig. 4 shows the relationship between flapper displacement and differential pressure of spool ends which is implied in Eq. 9 and simulation data points obtained by CFD software.
These data points are obtained by software simulation and the curve is plotted by data fitting.
T. [3] did some simulation research on hydraulic bridge of water hydraulic valve by CFD software, and got some results on the flow force of the flapper different from the present paper.
Software Simulation of the Hydraulic Bridge Based on the formula deductions above, the simulation model is therefore established to compute simplified hydraulic bridge.
Fig. 3 Simulation model of the hydraulic bridge Fig. 4 shows the relationship between flapper displacement and differential pressure of spool ends which is implied in Eq. 9 and simulation data points obtained by CFD software.
These data points are obtained by software simulation and the curve is plotted by data fitting.
Online since: December 2025
Authors: Andrea Manes, Edison Shehu, Luca Lomazzi
CFD simulations are performed independently to calculate pressure histories, then they are subsequently mapped onto structural FE models as input loads.
In this approach, the pressure field generated by the blast wave is first computed through computational fluid dynamics (CFD) simulations, capturing the effects of confinement.
In this method, the pressure field, p(x, y, t), representing the blast load on a structure is obtained either through empirical models or via computational fluid dynamics (CFD) simulations that focus solely on the fluid domain.
In this work, CFD simulations are carried out using blastFoam [8], a new, entirely open-source toolbox based on OpenFOAM.
Complementing the CFD analysis, FE simulations are conducted using Abaqus/Explicit, that was chosen primarily for its flexibility in accommodating user-defined Fortran subroutines, which enable the implementation of customized material models and the integration of CFD-derived pressure histories into FE analyses.
In this approach, the pressure field generated by the blast wave is first computed through computational fluid dynamics (CFD) simulations, capturing the effects of confinement.
In this method, the pressure field, p(x, y, t), representing the blast load on a structure is obtained either through empirical models or via computational fluid dynamics (CFD) simulations that focus solely on the fluid domain.
In this work, CFD simulations are carried out using blastFoam [8], a new, entirely open-source toolbox based on OpenFOAM.
Complementing the CFD analysis, FE simulations are conducted using Abaqus/Explicit, that was chosen primarily for its flexibility in accommodating user-defined Fortran subroutines, which enable the implementation of customized material models and the integration of CFD-derived pressure histories into FE analyses.
Online since: December 2012
Authors: Chia Chun Yu, Shih Cheng Wang, Cherng Shing Lin, Te Chi Chen
CFD Application for Performance Based Safety Verification of Reinforced Concrete Beam in Computer Simulation Building Fire
Chia-Chun YU1, Shih-Cheng WANG2, Cherng-Shing LIN3 and Te-Chi CHEN4
1~4 Department of Mechanical Engineering Yuan Ze University Taoyuan, Taiwan 32003, R.O.C
email: jjy5418@gmail.com
Keywords: Fire, Reinforced concrete beam, Numerical simulation, Field model, FDS.
Therefore, computational fluid dynamic (CFD) integration to simulate fire scenarios has been widely utilized in fire protection engineering.
Therefore, CFD models have been developed to investigate building structure safety after a fire.
This study utilizes fire model FDS and CFD code PHOENICS software to investigate temperature distribution of RC beams during a room fire.
The PHOENICS is a general CFD code using Reynolds Averaged Navier-Stokes (RANS) method to investigate fluid flow, heat flow, chemical reaction, and stresses in solids.
Therefore, computational fluid dynamic (CFD) integration to simulate fire scenarios has been widely utilized in fire protection engineering.
Therefore, CFD models have been developed to investigate building structure safety after a fire.
This study utilizes fire model FDS and CFD code PHOENICS software to investigate temperature distribution of RC beams during a room fire.
The PHOENICS is a general CFD code using Reynolds Averaged Navier-Stokes (RANS) method to investigate fluid flow, heat flow, chemical reaction, and stresses in solids.
Online since: January 2013
Authors: Yin Hu Qu, Hong Mei Zheng, Cui Liu, Tao Liang, Feng Wang, Xin Feng Liu, Qiong Wang, Min Hua Zhang
China,471009
aquyinhu@sina.com, bquyinhu@xpu.edu.cn
Keywords: Hema-type nozzle, inner channel, numerical simulation, Fluent,Gambit, optimal design
Abstract. the inner flow fields of twelve Hema-type ATY nozzles which have different structure and parameters are simulated by the Fluent software, which is based on the CFD (Computational Fluid Dynamics) theory.Then the simulation results are analyzed,through wich the best designed nozzle is determined.
At present time, FLUENT is one of the best modern CFD software which can be used to simulate the inner flow filed of nozzle[2,3].
In this paper, the inner flow fields of twelve different Hema-type ATY nozzles which have different structure and parameters are simulated by the Fluent software, which is based on the CFD (Computational Fluid Dynamics) theory.Then the simulation results are analyzed,through wich the best nozzle is determined.
Simulation of the Inner Flow Field of Hema-Type ATY Nozzle.
One Validation Case of the CFD Software Fluent: Part of the Development Effort of a new Reactor Analysis Tool, Proceedings of International Conference on Nuclear Engineering, ICONE, 2002; 913-919
At present time, FLUENT is one of the best modern CFD software which can be used to simulate the inner flow filed of nozzle[2,3].
In this paper, the inner flow fields of twelve different Hema-type ATY nozzles which have different structure and parameters are simulated by the Fluent software, which is based on the CFD (Computational Fluid Dynamics) theory.Then the simulation results are analyzed,through wich the best nozzle is determined.
Simulation of the Inner Flow Field of Hema-Type ATY Nozzle.
One Validation Case of the CFD Software Fluent: Part of the Development Effort of a new Reactor Analysis Tool, Proceedings of International Conference on Nuclear Engineering, ICONE, 2002; 913-919
Online since: July 2014
Authors: Yi Sun, Hai Tao Shi, Yuan Ze Wu, Bai Feng Ji
Study on the downburst field characteristics under the influence of two-dimensional continuous mountains at different distance
Yi Sun1, a, Yuanze Wu1, Haitao Shi1, Baifeng Ji2
1 School of Civil Engineering and Architecture, Wuhan University of Technology Wuhan, China, 430070
2 Hubei Key Laboratory of Roadway Bridge &Structure Engineering, Wuhan University of Technology Wuhan, China, 430070
a274118038@qq.com
Keywords: downburst; wind field characteristics; continuous mountains; CFD numerical simulation;
Abstract.
In this thesis, the changes of the wind field characteristics under the influence of continuous mountains at different distance after the downburst happened are studied by CFD numerical simulation.
And CFD method using commercial software FLUENT can effectively simulates the whole process of the downburst field characteristics under the influence of two-dimensional continuous mountains at different distance.
Numerical Simulations of an Isolated Microburst.
Downburst simulations experimental and numerical challenges[C].Proceedings of the 2004 Structures Congress 2Building on the Past: Securing the Future, 2004: 1657 – 1664 [7] Mason M. physical simulation of thunderstorm downbursts [D].Masters thesis, Lubbock (TX, USA): Texas Tech Unversiity, 2003.
In this thesis, the changes of the wind field characteristics under the influence of continuous mountains at different distance after the downburst happened are studied by CFD numerical simulation.
And CFD method using commercial software FLUENT can effectively simulates the whole process of the downburst field characteristics under the influence of two-dimensional continuous mountains at different distance.
Numerical Simulations of an Isolated Microburst.
Downburst simulations experimental and numerical challenges[C].Proceedings of the 2004 Structures Congress 2Building on the Past: Securing the Future, 2004: 1657 – 1664 [7] Mason M. physical simulation of thunderstorm downbursts [D].Masters thesis, Lubbock (TX, USA): Texas Tech Unversiity, 2003.
Numerical Investigation on the Effect of Injection Pressure on Melt Front Pressure and Velocity Drop
Online since: August 2015
Authors: H. Yusoff, M.S. Rusdi, Abdus Samad Mahmud, C.Y. Khor, S.M. Firdaus, Muhammad Khalil Abdullah, Mohd Zulkifly Abdullah, M.S. Abdul Aziz
Computational Fluid Dynamic (CFD) was used to simulate the injection molding process of a tray.
CFD simulation software ANSYS FLUENT 14 was utilized in this study.
The tray-shape mold cavity (Fig.1) was built by using SOLIDWORKS 2012 and then exported to CFD software for meshing and simulation analysis.
CFD software solved the governing equation by using Cartesian spatial coordinates and velocity component.
Figure 4: Velocity values at different injection pressures Conclusion CFD simulation using ANSYS FLUENT 14 was used to simulate the injection molding process of molten PP into a tray-shape mold cavity.
CFD simulation software ANSYS FLUENT 14 was utilized in this study.
The tray-shape mold cavity (Fig.1) was built by using SOLIDWORKS 2012 and then exported to CFD software for meshing and simulation analysis.
CFD software solved the governing equation by using Cartesian spatial coordinates and velocity component.
Figure 4: Velocity values at different injection pressures Conclusion CFD simulation using ANSYS FLUENT 14 was used to simulate the injection molding process of molten PP into a tray-shape mold cavity.