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Online since: August 2011
Authors: Qin Dai, Tie Neng Guo, Li Gang Cai
Wang Xinhua [5] proposed it could improve the reliability of the design by using two-dimensional CFD simulation for designing oil pad and a new type oil pad with oil groove was presented by using this method.
Numerical Simulation Research of Round Hydrostatic Oil Pads Based on CFD
Numerical Simulation Research of Round Hydrostatic Oil Pads Based on CFD
Online since: August 2014
Authors: Xing Li, Xiao Yong Li, Yun Chun Jiang, Jing Peng Chen, Cun Yan Cui, Yuan Li
Some numerical simulations are made to investigate on the effects of the tank pressure, docking mechanism and buoyancy.
This paper conducts the research of hydrogen leakage, combining the dynamic mesh technique and the numerical simulation method, in view of the above research situation.
Simulation of hydrogen releases The diffusion area is roughly square in shape with dimensions 2 ´2 m in length and height, using triangle grid, see Fig. 1, the coordinate of leakage face is (-0.1,0).
These kinds of simulations have obtained hydrogen dispersion results and the relative law of dispersion.
Proficient in CFD dynamic grid engineering simulation and practice case[M].
This paper conducts the research of hydrogen leakage, combining the dynamic mesh technique and the numerical simulation method, in view of the above research situation.
Simulation of hydrogen releases The diffusion area is roughly square in shape with dimensions 2 ´2 m in length and height, using triangle grid, see Fig. 1, the coordinate of leakage face is (-0.1,0).
These kinds of simulations have obtained hydrogen dispersion results and the relative law of dispersion.
Proficient in CFD dynamic grid engineering simulation and practice case[M].
Online since: June 2014
Authors: Zhi Xia He, Jian Ping Yuan, Bang Lun Zhou, Feng Hong
Effect of Different Airfoils on Performance of Axial Fan
BanglunZhou1, a, JianpingYuan2,b, ZhixiaHe3,c and FengHong4,d
1Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu, China
2Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu, China
3School of Energy and Power Engineering, Jiangsu University,Zhenjiang, Jiangsu, China
4Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu, China
azblujs@163.com, byh@ujs.edu.cn, czxhe@ujs.edu.cn, dzjjaihf@163.com
Keywords:axial flow fan; numerical simulation; airfoil; total pressure
Abstract.Airfoil has great influence on the performance of axial fan.
Main parameters of blade airfoil Hub Mid-span tip Operating Radius (mm) 180 470 400 Chord Length (mm) 190 174 146 Airfoil Stagger Angle ( °) 42 31 18 Fig.1 Computational domain Meshing The whole mesh generation wasdone by the ANSYS ICEM CFD 14.5 software, and the multi-block structured grid was utilized to discretize the computational domain.A hexahedral grid system was employed as the mesh in thecomputational domain.The grid number of the whole computational and impeller were 9,870,000 and2,756,000 respectively.The mesh qualities of impeller werethat Determinant 3×3×3 was 0.4, and Angle was 18°.
The turbulence was set as low with the intensity of 5%.The simulations performed were steady-state, and the working substance was 25°C air.The inlet boundarywas normal speed and the outlet boundarywas static pressure.
CFD Simulation of 3DFlow in Large-bore Axial-flow Pump with Half-elbowSuction Sump[J].J Hydro, Ser.
Main parameters of blade airfoil Hub Mid-span tip Operating Radius (mm) 180 470 400 Chord Length (mm) 190 174 146 Airfoil Stagger Angle ( °) 42 31 18 Fig.1 Computational domain Meshing The whole mesh generation wasdone by the ANSYS ICEM CFD 14.5 software, and the multi-block structured grid was utilized to discretize the computational domain.A hexahedral grid system was employed as the mesh in thecomputational domain.The grid number of the whole computational and impeller were 9,870,000 and2,756,000 respectively.The mesh qualities of impeller werethat Determinant 3×3×3 was 0.4, and Angle was 18°.
The turbulence was set as low with the intensity of 5%.The simulations performed were steady-state, and the working substance was 25°C air.The inlet boundarywas normal speed and the outlet boundarywas static pressure.
CFD Simulation of 3DFlow in Large-bore Axial-flow Pump with Half-elbowSuction Sump[J].J Hydro, Ser.
Online since: November 2012
Authors: Chia Chun Yu, Cherng Shing Lin, Shih Cheng Wang
It provides a computational fluid dynamics (CFD) calculation method mainly based on the turbulence model of so-called large eddy simulation (LES).
The simulation results showed reasonable agreement with post accident reports.
Yu: Dynamic Simulation of Backdraft Phenomena in a Townhouse Building Fire.
Chien: Using fire dynamic simulation (FDS) to reconstruct an arson fire scene.
Xin: Experimental study and numerical simulation for a storehouse fire accident.
The simulation results showed reasonable agreement with post accident reports.
Yu: Dynamic Simulation of Backdraft Phenomena in a Townhouse Building Fire.
Chien: Using fire dynamic simulation (FDS) to reconstruct an arson fire scene.
Xin: Experimental study and numerical simulation for a storehouse fire accident.
Online since: February 2014
Authors: Li Feng Zhao, Wei Liu
A thermosetting coupling model of a hot-film sensor was established based on CFD which is used to simulate dynamic response characteristics; the temperature field of the hot-film flow sensor probe was simulated.
Results of experiment test and computational simulation Figure 8 shows the sensor voltage and the simulated curve with the effect of step pulse airflow.
The response time obtained in test is longer than that obtained by simulation.
The boundary conditions used in simulation is a constant temperature of heating resistor.
Results of experiment test and computational simulation Figure 8 shows the sensor voltage and the simulated curve with the effect of step pulse airflow.
The response time obtained in test is longer than that obtained by simulation.
The boundary conditions used in simulation is a constant temperature of heating resistor.
Online since: January 2012
Authors: Mostafa Varmazyar, Majid Bazargan
Introduction
The conventional computational fluid dynamics (CFD) methods are based on direct discretization of the Navier–Stokes equations.
The kinetic methods for CFD, however, are derived from the Boltzmann equation.
Due to their mesoscopic nature, kinetic methods are particularly appealing in modeling and simulations of complex fluids [1].
In addition the results of the unsteady Couette flow simulation between two cylinders have been discussed.
The kinetic methods for CFD, however, are derived from the Boltzmann equation.
Due to their mesoscopic nature, kinetic methods are particularly appealing in modeling and simulations of complex fluids [1].
In addition the results of the unsteady Couette flow simulation between two cylinders have been discussed.
Online since: June 2012
Authors: Ai Min Zhou, Yong Jiang, Jian Chen, Shi Zhong Wang
Numerical simulation for subcooled boiling flow process of high pressure liquid
Zhou Aimin,Jiang Yong,Chen Jian,Wang ShiZhong
Wuhan 2nd Ship Design and Research Institute,Wuhan 430064,China
epe-zhouaimin@163.com
Keywords: subcooled boiling;two-fluid model;void fraction;numerical simulation
Abstract.
A numerical simulation has been performed for subcooled boiling process of high pressure liquid.
With the development of computer hardware, numerical methods and the multiphase flow models, some researchers have studied the water subcooled boiling flow process by the CFD tools.
Numerical simulation of subcooled boiling water in vertical concentric annulus under low pressure [J].
Numerical simulation for subcooled boiling process of liquid nitrogen in vertical tube [J].
A numerical simulation has been performed for subcooled boiling process of high pressure liquid.
With the development of computer hardware, numerical methods and the multiphase flow models, some researchers have studied the water subcooled boiling flow process by the CFD tools.
Numerical simulation of subcooled boiling water in vertical concentric annulus under low pressure [J].
Numerical simulation for subcooled boiling process of liquid nitrogen in vertical tube [J].
Online since: June 2019
Authors: Qiang Wang, Jian Lu, Ting Xi Wu
Numerical Simulation Study on Influence of Geometric Parameters of Spin-Coating Pallet on Wafer Deformation
Ting-Xi Wu1,a, Jian Lu2,b, Qiang Wang1,c*
1School of Electronic and Information, Nantong University, Nantong, Jiangsu, 226019, China
2School of Electronic and Information, Jiangsu Vocational College of Business, Nantong, Jiangsu, 226019, China
a1140296861@qq.com, b1561833576@qq.com, cwang_q@ntu.edu.cn
Keywords: Spin-coating pallet; Wafer; Deformation; Numerical simulation
Abstract.
Numerical simulations and experiments based on Fluent were carried out, including discussing geometric parameters of spin-coating pallet that affect wafer deformation.
In this paper, the numerical simulation experiments were carried out based on Fluent and the experiments of the geometric parameters of the spin-coating pallet that affect the 3-inch wafer deformation were investigated.
The effect of the geometric parameters of the spin-coating pallet on the wafer deformation was discussed by numerical simulations.
Wang: Computational Fluid Dynamics Analysis-Principle and Application of CFD Software (Tsinghua University Press, Beijing 2004).
Numerical simulations and experiments based on Fluent were carried out, including discussing geometric parameters of spin-coating pallet that affect wafer deformation.
In this paper, the numerical simulation experiments were carried out based on Fluent and the experiments of the geometric parameters of the spin-coating pallet that affect the 3-inch wafer deformation were investigated.
The effect of the geometric parameters of the spin-coating pallet on the wafer deformation was discussed by numerical simulations.
Wang: Computational Fluid Dynamics Analysis-Principle and Application of CFD Software (Tsinghua University Press, Beijing 2004).
Online since: February 2012
Authors: M.S.J. Hashmi, Abdul Ghani Olabi, M.M. Rahman
FIDAP has been used due to the ability of rigorous computational fluid dynamics (CFD) code.
SIMULATION METHODS 2.1 Implementation of the rheological model in FIDAP.
The FE model use CFD code to obtain independent numerical results for the pseudoplastic and the rheopectic behaviour of bone cements.
Simulation was performed for a period of twelve minutes using the transient analysis option.
“A computational fluid dynamics simulation of PMMA cement flow upon insertion of a femoral stem into a bone cavity during a total hip prosthesis procedure”.
SIMULATION METHODS 2.1 Implementation of the rheological model in FIDAP.
The FE model use CFD code to obtain independent numerical results for the pseudoplastic and the rheopectic behaviour of bone cements.
Simulation was performed for a period of twelve minutes using the transient analysis option.
“A computational fluid dynamics simulation of PMMA cement flow upon insertion of a femoral stem into a bone cavity during a total hip prosthesis procedure”.