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Online since: October 2006
Authors: Mathias Liewald, M. Schneider, Peter Unseld
Discretization
For the mesh generation the STL-CAD geometry was imported into ANSYS ICEM CFD 5.1® .
Within the simulation the CFD-code ANSYS CFX-10® was combined with the FEM-code ANSYS 10 Multiphysics® .
The interpolations of the pressure, as the results of the CFD simulation, the pressure onto the woven fibre fabricate (Fig. 8), resulting from the infiltration, are applied as boundary conditions onto the FEA model.
The displacements as structural solution of the FE analysis are feed back as boundary conditions into the CFD mesh.
This interaction between the CFD and FE analysis is continued iteratively until the solution criteria is reached.
Within the simulation the CFD-code ANSYS CFX-10® was combined with the FEM-code ANSYS 10 Multiphysics® .
The interpolations of the pressure, as the results of the CFD simulation, the pressure onto the woven fibre fabricate (Fig. 8), resulting from the infiltration, are applied as boundary conditions onto the FEA model.
The displacements as structural solution of the FE analysis are feed back as boundary conditions into the CFD mesh.
This interaction between the CFD and FE analysis is continued iteratively until the solution criteria is reached.
Online since: December 2011
Authors: Zhong Yun, Chuang Xiang, Xiao Yan Tang, Fen Shi
The turbulent flow in the designed HSBP have been simulated and analyzed by using the multiphase suspend body CFD simulation technology.
The simulation results indicate that the turbulence in the designed HSBP can meet the requirements of blood physiology.
By using the means of computational fluid dynamics (CFD) when optimizing the shape of impeller, we can predict the function of blood pump and the disadvantage of inner flow field more precisely so as to lighten the shear stress of the blood cell.
So it’s important to use CFD technology on studying the improvement of blood pump’s mechanical efficiency and reducing the blood turbulent injury.
The length of impller is 15mm; the designed flow is 5L/min;the pressure drop of inlet and outlet is 100mmHg;the speed of impeller is 7500rpm. Ⅱ CFD Simulation results of IMFBP’s Inner turbulent flow field Fig.2 The distribution of TKE in HSBP Fig.3 The distribution of the axial TKE Fig.4 The distribution of TDR in HSBP Fig.5 The distribution of the axial TDR Fig.2 shows the distribution of TKE in IMFBP’s flow field.
The simulation results indicate that the turbulence in the designed HSBP can meet the requirements of blood physiology.
By using the means of computational fluid dynamics (CFD) when optimizing the shape of impeller, we can predict the function of blood pump and the disadvantage of inner flow field more precisely so as to lighten the shear stress of the blood cell.
So it’s important to use CFD technology on studying the improvement of blood pump’s mechanical efficiency and reducing the blood turbulent injury.
The length of impller is 15mm; the designed flow is 5L/min;the pressure drop of inlet and outlet is 100mmHg;the speed of impeller is 7500rpm. Ⅱ CFD Simulation results of IMFBP’s Inner turbulent flow field Fig.2 The distribution of TKE in HSBP Fig.3 The distribution of the axial TKE Fig.4 The distribution of TDR in HSBP Fig.5 The distribution of the axial TDR Fig.2 shows the distribution of TKE in IMFBP’s flow field.
Online since: October 2011
Authors: Ling Bai, Ke Liu
A fluid-structure interaction numerical simulation technique based on CFD has been developed to study the vortex-induced vibration behavior of steel arch bridge hanger.
CFDNST application The CFDNST is developed by using commercial CFD software Fluent and its User Defined Function (UDF).
The boundary condition in CFD model is shown as below
Simulation wind speed varies from 2.0 to 9.0 m/s.
[4] F.J.Wang, Computational Fluid Dynamics – CFD Theory and Its Application, 1st ed., Tsinghua University Press, Beijing, China, 2004.
CFDNST application The CFDNST is developed by using commercial CFD software Fluent and its User Defined Function (UDF).
The boundary condition in CFD model is shown as below
Simulation wind speed varies from 2.0 to 9.0 m/s.
[4] F.J.Wang, Computational Fluid Dynamics – CFD Theory and Its Application, 1st ed., Tsinghua University Press, Beijing, China, 2004.
Online since: November 2012
Authors: Xiao Xing, Guo Ming Ye
A three-dimensional grid and the realizable turbulence model are used in this simulation.
Based on the simulation, the principle of yarn splicing of the pneumatic splicer is discussed.
Jianheng Zhou and Pengfei Qin [2] firstly applied the Computational Fluid Dynamics (CFD) technology to the design of the pneumatic splicer, but they adopted the standard model to calculate turbulence in the simulation.
In this simulation, the Cartesian coordinate system is adopted.
The CFD Technology for Pneumatic Splicer Virtual Product Development [J] .
Based on the simulation, the principle of yarn splicing of the pneumatic splicer is discussed.
Jianheng Zhou and Pengfei Qin [2] firstly applied the Computational Fluid Dynamics (CFD) technology to the design of the pneumatic splicer, but they adopted the standard model to calculate turbulence in the simulation.
In this simulation, the Cartesian coordinate system is adopted.
The CFD Technology for Pneumatic Splicer Virtual Product Development [J] .
Online since: February 2012
Authors: Ming Wei Ge, Hai Tao Dai, Ming Qin
Evaluation of water cooling system of 1.5MW rotor based on CFD
Ming Qin 1,2,a, Hai Tao Dai 1,2,b, Ming Wei Ge 1,2, c
1Guodian United Power Technology Company Limited, Beijing 100039, P.
In this paper, the focus on the cooling pipe arrangement of the cooling system via CFD based on the 3D model.
During the simulation, the thermal conductivity, the convective heat transfer and the Radiation are all taken into consideration.
In the CFD simulation, the imcompressible Reynolds Averaged Navier Stokes equation is used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the cooling water density, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the coordinates and grids used in the simulation, to validate the grids, the grid-independent is verified by three different grids.
In this paper, the focus on the cooling pipe arrangement of the cooling system via CFD based on the 3D model.
During the simulation, the thermal conductivity, the convective heat transfer and the Radiation are all taken into consideration.
In the CFD simulation, the imcompressible Reynolds Averaged Navier Stokes equation is used (2) (3) where the subscript i or j is the i/j-th component of cooresponding vector. ρ is the cooling water density, p is the pressure and is the kinetic viscosity of the fluids.
Fig.2 shows the coordinates and grids used in the simulation, to validate the grids, the grid-independent is verified by three different grids.
Online since: May 2015
Authors: Min Li, Shao Rong Xiao, Qing Quan Liu, Xiao Li Mao, Jia Hong Zhang
To solve this problem, this paper presents a novel numerical analysis method for the error correction of RH based on computational fluid dynamics(CFD).
By using CFD commercial software package Fluent, we get the temperature error caused by solar radiation heating varying with different influencing factors.
After comparison, we find that the simplified model (only a humidity sensor) has no effect on the results of numerical simulation because of the symmetry of two sensors.
The grids of the simplified model and air domain Finally, the file of the divided mesh is imported to software Ansys Fluent for numerical simulation.
Then the convection-solar radiation coupled thermal boundary conditions are adopted in the numerical simulation for analysis of fluid-solid coupled heat transfer.
By using CFD commercial software package Fluent, we get the temperature error caused by solar radiation heating varying with different influencing factors.
After comparison, we find that the simplified model (only a humidity sensor) has no effect on the results of numerical simulation because of the symmetry of two sensors.
The grids of the simplified model and air domain Finally, the file of the divided mesh is imported to software Ansys Fluent for numerical simulation.
Then the convection-solar radiation coupled thermal boundary conditions are adopted in the numerical simulation for analysis of fluid-solid coupled heat transfer.
Online since: August 2012
Authors: Mutellip Ahmat, Jing Luo, Qiang Gao, Li Chao Ren
Numerical Calculation to the Fluid-Film of the Sealing Ring
CFD Numerical Theory.
These basic laws can be expressed by mathematical equations.CFD is the integral or partial differential equations was instead by the discrete algebraic.
The CFD pre-processing software GAMBIT was Applied , the 3-D numerical model of the friction pair fluid-film was built up by software GAMBIT based on actual condition finally.
So the result of numerical simulation of the pressure is lower than the result of the theoretical.
It led to the theoretical calculations and the numerical simulation have the larger of error.
These basic laws can be expressed by mathematical equations.CFD is the integral or partial differential equations was instead by the discrete algebraic.
The CFD pre-processing software GAMBIT was Applied , the 3-D numerical model of the friction pair fluid-film was built up by software GAMBIT based on actual condition finally.
So the result of numerical simulation of the pressure is lower than the result of the theoretical.
It led to the theoretical calculations and the numerical simulation have the larger of error.
Online since: August 2011
Authors: Mao Deng, Zong Ming Wang, Chun Xue Zhang
A moving interior boundary method fitted dynamic mesh for the simulation of flow through moving bodies
Mao Deng1, a, Zongming Wang2,b, Chunxue Zhang3,c
1,2,3College of Electromechanical Engineering China University of Petroleum
Dongying city, Shandong province, P.R.China
adengmao19880820@163.com, bwzmcc@upc.edu.cn, chappyzhchx@163.com
Keywords: CFD, dynamic mesh, moving body, porous material, simulation
Abstract.
The geometry was exported from SolidWorksTM in Parasolid format and imported into GAMBITTM, where the CFD mesh was generated.
The mesh was input into FLUENTTM CFD package.
We used dynamic mesh model to do the simulation.
As an example, a three-dimensional CFD study of the flow through a moving screen has successfully been conducted.
The geometry was exported from SolidWorksTM in Parasolid format and imported into GAMBITTM, where the CFD mesh was generated.
The mesh was input into FLUENTTM CFD package.
We used dynamic mesh model to do the simulation.
As an example, a three-dimensional CFD study of the flow through a moving screen has successfully been conducted.
Online since: October 2011
Authors: Zhi Fang Yin, Dan Zhang, Hong Ming Fan, Hui Min Liu
Furthermore, Izadi MJ[11] carried out CFD simulations for different floor heating models.
A standard model was employed in these simulation .
In this simulation, ˚C,AUST=18˚C.
In this simulation, ˚C;˚C.
CFD Simulation of Temperature Distribution in a Room with Various Under Floor Heating System Models.PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE,2009(1):2319-2329
A standard model was employed in these simulation .
In this simulation, ˚C,AUST=18˚C.
In this simulation, ˚C;˚C.
CFD Simulation of Temperature Distribution in a Room with Various Under Floor Heating System Models.PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER CONFERENCE,2009(1):2319-2329
Online since: April 2013
Authors: Dong Yan Zhang, Guo Xiong Ye, Wei Tao Zheng
In order to study the interaction of flow around two full-scaled blades of Canoes which are used in sports competition, the numerical simulation is performed for computation of fluid dynamics (CFD) using Fluent, commercial software.
This is the first research of simulation using computational fluid dynamics (CFD) to investigate the fluid mechanism in rowing.
Large Edyy Simulation of Flow around Two Circular Cylinders.
Numerical Simulation of the Flow around an Oar Blade of Canoe at Square-off.
Numerical Simulation of Oar Blade of Rowing at Higher Angle of Attack.
This is the first research of simulation using computational fluid dynamics (CFD) to investigate the fluid mechanism in rowing.
Large Edyy Simulation of Flow around Two Circular Cylinders.
Numerical Simulation of the Flow around an Oar Blade of Canoe at Square-off.
Numerical Simulation of Oar Blade of Rowing at Higher Angle of Attack.