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Planar Defects and their Role in Physics-Mechanical Properties of Ordered Alloys and Intermetallides
Online since: December 2007
Authors: Mikhail D. Starostenkov, Evgenia Dudnik, Galina Popova, Evgeniya Chernykh
It is evident that simulations realization of the conditions APB TAPB
W W> , 12
APB TAPB
W W> or the
conditions 12
2 APB TAPB TAPB
W W W> + allows to transform the pair of shear APB into a thermal
complex.
When the displacements of atoms are symmetric relatively a boundary plane, two types of defects (symmetric) are distinguished - simple types of defects: APB, TbAPB, SA, TAPB, SFD, superstructure twin FD, superstructure extrinsic FD, some types of CFD asymmetric - PAPB, a big group of CFD.
When the displacements of atoms are symmetric relatively a boundary plane, two types of defects (symmetric) are distinguished - simple types of defects: APB, TbAPB, SA, TAPB, SFD, superstructure twin FD, superstructure extrinsic FD, some types of CFD asymmetric - PAPB, a big group of CFD.
Online since: May 2011
Authors: Jian Ping Lin, Zhi Guo Lu, Dan Dan Hua
The whole-field temperature distribution of the whole system including the joint, the enclosure and the medium, was solved based on the conjugate heat transfer model using ANSYS CFD software.
Finite element modeling development Given the fluid properties of the air, ANSYS CFD for fluid-solid coupling analysis was used for modeling the whole system including the joint, the enclosure and the air.
[8] A.Cheung, Y.Yu, K.Pochiraju: Three-dimensional finite element simulation of curing of polymer composites.
Finite element modeling development Given the fluid properties of the air, ANSYS CFD for fluid-solid coupling analysis was used for modeling the whole system including the joint, the enclosure and the air.
[8] A.Cheung, Y.Yu, K.Pochiraju: Three-dimensional finite element simulation of curing of polymer composites.
Online since: August 2013
Authors: Zhi Hui Sha, Jun Sheng Li, Xing Guo Cheng, Hua Li Gao, Hui Yong Li
The protection of the environment should be paid special attention in the agro-ecological zone. 3) The adoption of CFD to simulate the city air duct to build the space frame of the low-carbon eco-city which benefits the natural cycling.
CFD technology develops in modern times and is an effective fluid motion simulation technology.
CFD technology develops in modern times and is an effective fluid motion simulation technology.
Online since: November 2012
Authors: P. Srinivasa Murthy, Syed Mohammed Aminuddin Aftab
Hence this model is used for simulation [8].
For exhaustive vortex generator CFD analysis, a lot of parametric studies have to be done in terms of chord wise location and span wise location, size and shape of the vortex generator and orientation of the vortex generator.
Abbreviations Symbol Meaning C Chord CL Co-efficient of Lift CD Co-efficient of Drag M∞ Free stream Mach number P∞ Pressure, N/m2 T Temperature, K δ Boundary layer thickness Re Reynolds number CFD Computational Fluid Dynamics VG Vortex Generator References [1] M.
For exhaustive vortex generator CFD analysis, a lot of parametric studies have to be done in terms of chord wise location and span wise location, size and shape of the vortex generator and orientation of the vortex generator.
Abbreviations Symbol Meaning C Chord CL Co-efficient of Lift CD Co-efficient of Drag M∞ Free stream Mach number P∞ Pressure, N/m2 T Temperature, K δ Boundary layer thickness Re Reynolds number CFD Computational Fluid Dynamics VG Vortex Generator References [1] M.
Online since: June 2012
Authors: Jun Zheng, Xiao Lin Zhang, Hao Bo Qiu
Variable fidelity optimization (VFO) is a recently developed method to solve computationally expensive problem in simulation-based design [3].
There has several kind of variable fidelity model sources: (1) different physical or mathematical description, such as Navier-Stokes viscous Newton equation and Euler non-cohesive equation (2) different resolution, such as coarse and refined finite element grid (3) different precision, such as simplified boundary conditions, the 2 d model instead of 3 d model(4) different experiment method, such as wind tunnel test, CFD finite element simulation and engineering experience estimate and so on.
But in the variable fidelity modeling, the samples derived from multilevel fidelity simulations.
However, the variable-fidelity modeling approach only used 15 high-fidelity simulations while the high fidelity approximation needed 30.
Simulation-based design using varible fidelity optimization.
There has several kind of variable fidelity model sources: (1) different physical or mathematical description, such as Navier-Stokes viscous Newton equation and Euler non-cohesive equation (2) different resolution, such as coarse and refined finite element grid (3) different precision, such as simplified boundary conditions, the 2 d model instead of 3 d model(4) different experiment method, such as wind tunnel test, CFD finite element simulation and engineering experience estimate and so on.
But in the variable fidelity modeling, the samples derived from multilevel fidelity simulations.
However, the variable-fidelity modeling approach only used 15 high-fidelity simulations while the high fidelity approximation needed 30.
Simulation-based design using varible fidelity optimization.
Online since: August 2009
Authors: O.A. Morales-Contreras, J.G. Barbosa, J.A. Jiménez-Bernal, Claudia del Carmen Gutiérrez Torres
Numerical simulation for the three-dimensional laminar flow through a forward facing
step channel was simulated by Fluent 6.3 code.
Nakamura et al. [3] obtained results for a three-dimensional analysis by means of a DNS simulation.
A density of ρ=1.225kg/m3 and dynamic viscosity µ=1.78x10-5kg/m-s corresponding to air were considered in the numerical simulation.
The numerical simulation of a laminar flow trough a forward-facing step was presented in this paper.
Carswell: Comparison of CFD simulation to the experiments for forward-facing step, ASME FEDSM. pp. 1-6, 2003
Nakamura et al. [3] obtained results for a three-dimensional analysis by means of a DNS simulation.
A density of ρ=1.225kg/m3 and dynamic viscosity µ=1.78x10-5kg/m-s corresponding to air were considered in the numerical simulation.
The numerical simulation of a laminar flow trough a forward-facing step was presented in this paper.
Carswell: Comparison of CFD simulation to the experiments for forward-facing step, ASME FEDSM. pp. 1-6, 2003
Online since: October 2014
Authors: Tian Lin Wang, Yong Zhao
A numerical study of flow in two-dimensional turbulent boundary layer flow with mass injection through a porous wall is conducted by Reynolds averaged numerical simulation (RANS) in this paper.
This physical quantity is determined by the derivative of velocity and eddy viscosity, so it’s an appropriate candidate for checking numerical simulation.
Numerical simulation shows that mass injection plays a very active role in resistance reducing.
Turbulence Modeling for CFD, 3rd edition, DCW Industries, Inc., La Canada CA, 2006
This physical quantity is determined by the derivative of velocity and eddy viscosity, so it’s an appropriate candidate for checking numerical simulation.
Numerical simulation shows that mass injection plays a very active role in resistance reducing.
Turbulence Modeling for CFD, 3rd edition, DCW Industries, Inc., La Canada CA, 2006
Online since: February 2011
Authors: Yong Qiang Shi, Qing Zhen Yang, Xin Hai Zhou
At present, numerical modeling unsteady flow around oscillating cascade and analyzing aerodynamic force loading on blade by CFD technique, analyzing the interaction between vibrating blade and flow, has been an important mean and method to study flutter and forced vibration.
And the conclusion points out that this method at least one to two orders of magnitude faster than conventional nonlinear time-domain CFD simulations.
And the conclusion points out that this method at least one to two orders of magnitude faster than conventional nonlinear time-domain CFD simulations.
Online since: December 2011
Authors: Mei Jie Zhang, Xiao Long Lin, Hua Zhi Gu, Cheng Ji Deng, Hong Xi Zhu, Zhan Wu Xin
Then the flow fields and inclusion removal efficiency in a two-strand tundish were numerically calculated by CFD software.
The mathematical simulations were run on a P-IV processor computer with the CFD software CFX.
The mathematical simulations were run on a P-IV processor computer with the CFD software CFX.
Online since: March 2015
Authors: Yue Fa Fang, Ya Qiong Chen
Nowadays, the aerodynamic data of airfoils is obtained mainly by the viscous-nonviscous iteration method[7] considering potential flow and boundary layer, the computational fluid dynamics method(CFD) based on N-S equations[8] and wind tunnel experiments[9] and so on.
In this paper, the XFOIL software is selected in the optimized design of airfoils due to the complexity of the CFD method in the calculating process.
[8] Ma Linjing, Chen Jiang, Du Gang, Cao Renjing.Numerical Simulation of Aerodynamic Performance for Wind Turbine Airfoils[J].ACTA ENERCIAE SOLARS SINICA,2010,32(2):203-209
In this paper, the XFOIL software is selected in the optimized design of airfoils due to the complexity of the CFD method in the calculating process.
[8] Ma Linjing, Chen Jiang, Du Gang, Cao Renjing.Numerical Simulation of Aerodynamic Performance for Wind Turbine Airfoils[J].ACTA ENERCIAE SOLARS SINICA,2010,32(2):203-209