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Online since: August 2010
Authors: Zhi Jun Zhang, De Xi Wang
The mathematical model
of hot flow was resolved by computer fluid dynamics simulation (CFD).
It was also expatiated by the distribution temperature of CFD simulation.
The objective of this investigation is to examine the performance of domestic EWHs by CFD simulation method.
The mathematical model of hot flow was resolved by computer fluid dynamics simulation (CFD).
It was also expatiated by the distribution temperature of CFD simulation.
It was also expatiated by the distribution temperature of CFD simulation.
The objective of this investigation is to examine the performance of domestic EWHs by CFD simulation method.
The mathematical model of hot flow was resolved by computer fluid dynamics simulation (CFD).
It was also expatiated by the distribution temperature of CFD simulation.
Online since: September 2011
Authors: Ming Zhou Chen, Qi Dou Zhou
Then unsteady CFD simulation with different time step intervals was conducted for determining suitable time step interval, the results show that it is suitable for propeller rotating 3° per step.
Based on the chosen mesh and time step interval, unsteady CFD simulation of propeller P4118 was conducted in 3-cycle and 4-cycle inflow, the unsteady thrust, torque and horizontal force agree well with experimental data, the results show that CFD method has good accuracy in predicting unsteady propeller forces.
The numerical simulations are based on RANS equations closed by realizable k-ε model.
Therefore, CFD method gives good enough accuracy for propeller open water simulation.
Based on the chosen mesh and the time step interval, for P4118 unsteady CFD simulation in 3-cycle inflow and 4-cycle inflow, the unsteady thrust, torque and horizontal force agree well with experimental data and this means CFD has a good capability of predicting propeller unsteady performance.
Based on the chosen mesh and time step interval, unsteady CFD simulation of propeller P4118 was conducted in 3-cycle and 4-cycle inflow, the unsteady thrust, torque and horizontal force agree well with experimental data, the results show that CFD method has good accuracy in predicting unsteady propeller forces.
The numerical simulations are based on RANS equations closed by realizable k-ε model.
Therefore, CFD method gives good enough accuracy for propeller open water simulation.
Based on the chosen mesh and the time step interval, for P4118 unsteady CFD simulation in 3-cycle inflow and 4-cycle inflow, the unsteady thrust, torque and horizontal force agree well with experimental data and this means CFD has a good capability of predicting propeller unsteady performance.
Online since: December 2014
Authors: Abbas Rahimi, Andy Cordonier, Abhilash J. Chandy
This study presents statistical analysis of particle size distribution from a CFD simulation of polymer devolatilization in contactor, that uses superheated steam to isolate the polymers.
CFD simulation of polymerization In this simulation, solution of dissolved polymer in solvent (cement) flows into the contact zone through an annular slit and the superheated steam cuts into the cement flow from both a circumferential inner wall slit and a circumferential outer wall slit; the mixture of steam and developing crumb then flows to the coagulator vessel (not shown here) through the outlet (Fig. 1).
The operating conditions employed for these simulations are presented in Table 1.
(5), fDTD,T=cFD,FTfDDfT(T)
(8) fD|TD|T=T*=cFD,FT≤T*fDD
CFD simulation of polymerization In this simulation, solution of dissolved polymer in solvent (cement) flows into the contact zone through an annular slit and the superheated steam cuts into the cement flow from both a circumferential inner wall slit and a circumferential outer wall slit; the mixture of steam and developing crumb then flows to the coagulator vessel (not shown here) through the outlet (Fig. 1).
The operating conditions employed for these simulations are presented in Table 1.
(5), fDTD,T=cFD,FTfDDfT(T)
(8) fD|TD|T=T*=cFD,FT≤T*fDD
Online since: November 2013
Authors: Tian Jiang Hu, Guang Ming Wang, Han Zhou, Dai Bing Zhang, Yun Xiao Lv
Fig.1 shows how CFD method proceeds.
Fig.1 Self-propulsion simulation flow using CFD A commercial CFD package, Fluent, is taken as basic solver.
Fig. 4 Architecture of simulation environment Application :Burst & Coast swimming Burst & Coast swimming of 2D case is applied using CFD method.
Simple CFD simulation is regarded as a dynamic iterative process with fixed parameters.
SU, CFD Simulation of Flow Features and Vorticity Structures in Tuna-Like Swimming, China Ocean Eng., 25:73-82, 2011
Fig.1 Self-propulsion simulation flow using CFD A commercial CFD package, Fluent, is taken as basic solver.
Fig. 4 Architecture of simulation environment Application :Burst & Coast swimming Burst & Coast swimming of 2D case is applied using CFD method.
Simple CFD simulation is regarded as a dynamic iterative process with fixed parameters.
SU, CFD Simulation of Flow Features and Vorticity Structures in Tuna-Like Swimming, China Ocean Eng., 25:73-82, 2011
Online since: July 2014
Authors: Xiao Mi
Research based on CFD for Helical Intake Port Position Defect of Diesel Engines
Xiao Mi
LinYi University, Linyi, China
mixiao@lyu.edu.cn
Keywords: Diesel Engine; Intake Port; 3-Dimensional Numerical Simulation; CFD
Abstract.
The simulation is made using the software AVL FIRE in this paper.
In order to make good comparisons with intake port steady flow test results, the original data of CFD simulation computation is imported into the data handling program of the steady flow test rig and transformed to evaluation parameters of intake port (Ricardo method).
Conclusions The variation tendency of the average Ricardo Flow Coefficient and Swirl Ratio of the position deviations models is in accord with the result of steady flow test, which illustrates that the CFD numerical simulation is a practical method to guide the improvement of the intake port production.
LaimbÖk, Gerhard Meister, Simon Grilc, CFD Application in Compact Engine Development, SAE Paper No.982016, 1998
The simulation is made using the software AVL FIRE in this paper.
In order to make good comparisons with intake port steady flow test results, the original data of CFD simulation computation is imported into the data handling program of the steady flow test rig and transformed to evaluation parameters of intake port (Ricardo method).
Conclusions The variation tendency of the average Ricardo Flow Coefficient and Swirl Ratio of the position deviations models is in accord with the result of steady flow test, which illustrates that the CFD numerical simulation is a practical method to guide the improvement of the intake port production.
LaimbÖk, Gerhard Meister, Simon Grilc, CFD Application in Compact Engine Development, SAE Paper No.982016, 1998
Online since: August 2013
Authors: Wei Cao, Chuan Fu Xu, Zheng Hua Wang
An out-of-core method for CFD simulation in heterogeneous environment
Cao Wei1, a, Wang Zheng-hua2,b and Xu Chuan-fu3,c
1School of Computer, National University of Defense Technology, Changsha 410073, China
acaowei193@gmail.com, bzhhwang188@sina.com, cxuchuanfu@nudt.edu.cn
Keywords: Heterogeneous computing; CFD; Out-of-core method
Abstract. .
However, in most computational fluid dynamics (CFD) simulations, the computational capacity of CPU was ignored.
Following this trend, researchers accelerated scientific applications, including CFD applications in the heterogeneous environment.
In order to run bigger simulations, we propose out-of-core method to increase the simulation scale on single node.
And an out-of-core method is proposed to increase the simulation scale on single node.
However, in most computational fluid dynamics (CFD) simulations, the computational capacity of CPU was ignored.
Following this trend, researchers accelerated scientific applications, including CFD applications in the heterogeneous environment.
In order to run bigger simulations, we propose out-of-core method to increase the simulation scale on single node.
And an out-of-core method is proposed to increase the simulation scale on single node.
Online since: July 2014
Authors: Yi Sun, Hai Tao Shi, Bai Feng Ji, Yuan Ze Wu
The CFD pre-processing software GAMBIT was used to build considering the landscape type's downburst CFD computational model.
Then, the established CFD computational model was imported to the calculated hydrodynamics software FLUENT to take the numerical simulation of the downburst under different landforms.
The current domestic and international use of CFD simulations considered the influence of surface roughness, but didn’t make fine-grained roughness, when doing the wind field experiments, Fine attainment roughness has a greater impact on CFD simulation results, its simulation and study to wind field have an important significance.
[3] Yuanchang Deng, Sha Liu, Zhi Yu, Xuelan Zeng , CFD simulation of the actual impact of the wind farm terrain roughness analysis [J] Solar Technology, 2010,31 (12) 1645-1648
CFD simulation of the atmospheric boundary layer: Wall function problems [J].
Then, the established CFD computational model was imported to the calculated hydrodynamics software FLUENT to take the numerical simulation of the downburst under different landforms.
The current domestic and international use of CFD simulations considered the influence of surface roughness, but didn’t make fine-grained roughness, when doing the wind field experiments, Fine attainment roughness has a greater impact on CFD simulation results, its simulation and study to wind field have an important significance.
[3] Yuanchang Deng, Sha Liu, Zhi Yu, Xuelan Zeng , CFD simulation of the actual impact of the wind farm terrain roughness analysis [J] Solar Technology, 2010,31 (12) 1645-1648
CFD simulation of the atmospheric boundary layer: Wall function problems [J].
Online since: September 2013
Authors: Yi Shun Zhang, Ling Zhang, Chang Liang Shi, Yuan Yang Liu, Fei Yue Wang
The Numerical Simulation Study of the Cone Hindered Settling Hydro-sizer Based on CFD
Feiyue Wang1, a, Yishun Zhang1,b , Changliang Shi1,c
Yuanyang Liu1,d and Ling Zhang 1,e
(1.School of Material Science and Engineering ,Henan Polytechnic University, Jiaozuo ,Henan 454000, China)
awfyhpu@163.com, bzys@hpu.edu.cn, cslc303@126.com
dlyyhpu@163.com, ezlcard@163.com
Keywords: The Cone Hindered Settling Hydro-sizer; Fine coal classification; Flow field simulation; Computational Fluid Dynamics
Abstract.
This paper use CFD software for geometric modeling and structural mesh for the Cone Hindered Settling Hydro-sizer and then apply the Fluent software for three-dimensional CFD simulation.
Using RNG K-ε two-equation turbulence model and Swirl Dominated Flow model respectively, and the top speed of different feeding liquid two-phase flow of water under medium CFD numerical simulation results grader internal flow field characteristics.
Taking into account the solid - fluid system complexity and experimental motion detection limitations, the current numerical simulation method has been used for a variety of separation process numerical simulation (such as flotation[8]and heavy medium cyclone[9]), which shows a strong superiority and effectiveness.
Making use of computational fluid dynamics software Fluent 6.3.26 software to numerical Simulation.
This paper use CFD software for geometric modeling and structural mesh for the Cone Hindered Settling Hydro-sizer and then apply the Fluent software for three-dimensional CFD simulation.
Using RNG K-ε two-equation turbulence model and Swirl Dominated Flow model respectively, and the top speed of different feeding liquid two-phase flow of water under medium CFD numerical simulation results grader internal flow field characteristics.
Taking into account the solid - fluid system complexity and experimental motion detection limitations, the current numerical simulation method has been used for a variety of separation process numerical simulation (such as flotation[8]and heavy medium cyclone[9]), which shows a strong superiority and effectiveness.
Making use of computational fluid dynamics software Fluent 6.3.26 software to numerical Simulation.
Online since: December 2013
Authors: Milan Palko
Double-skin façade in Flotran CFD
Ing.arch.
The Aerodynamic simulation with CFD (Computational Fluid Dynamics).
There is a new way based on computer simulation.
In my case, the simulation program ANSYS based upon variation method of finite elements supported by FLOTRAN CFD module has been used for this method.
In ANSYS system there are two basic elements for FLORTAN – CFD.
The Aerodynamic simulation with CFD (Computational Fluid Dynamics).
There is a new way based on computer simulation.
In my case, the simulation program ANSYS based upon variation method of finite elements supported by FLOTRAN CFD module has been used for this method.
In ANSYS system there are two basic elements for FLORTAN – CFD.
Online since: November 2011
Authors: Tao Wang, Wei Sun, Xin Min Yao
To overcome the problem, CFD was used to acquire the information.
CFD is a highlight technique for the research field of ship.
The paper simulated flow field around vehicle based on CFD technique by means of CFD code Fluent.
Common Process of CFD Pre-processing.
Pressure correction method is used widely in many CFD codes.
CFD is a highlight technique for the research field of ship.
The paper simulated flow field around vehicle based on CFD technique by means of CFD code Fluent.
Common Process of CFD Pre-processing.
Pressure correction method is used widely in many CFD codes.