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Online since: March 2019
Authors: Khanh Hieu Ngo, Minh Triet Pham, Tat Hien Le
Hieu, Reverse engineering based on numerical simulation of ship propeller on the Suzuki 9.9 hp outboard motor, Journal of Transportation Science and Technology - Ho Chi Minh City University of Transport 26: 3 – 7, 2017
Hieu, Turbulence modeling in CFD for performance of the Wageningen B-Series propeller, presented at International Symposium on Computational Design and Engineering, HCM City, Viet Nam, 2017
Hieu, Turbulence modeling in CFD for performance of the Wageningen B-Series propeller, presented at International Symposium on Computational Design and Engineering, HCM City, Viet Nam, 2017
Online since: September 2016
Authors: Rong Shan Wang, Fei Xue, Wei Wei Yu, Jin Hua Shi, Zhi Lin Chen, Ming Ya Chen, Lv Feng
Transient information
The Monte Carlo simulation is used in the PFM assessment, and the total frequency of fast fracture is determined[7]:
(2)
where, is the conditional probabilities of fast fracture for the th representative transient, and is the frequency of the th representative transient.
And computational Fuild Dyanamics (CFD) analysis can be used to calculate more realistic HTCs. 5) Basic data collection for the PFM analysis, such as crack size, direction and probabilistic distribution, and the inspection capability can be used as the intial defect size.
And computational Fuild Dyanamics (CFD) analysis can be used to calculate more realistic HTCs. 5) Basic data collection for the PFM analysis, such as crack size, direction and probabilistic distribution, and the inspection capability can be used as the intial defect size.
Online since: September 2014
Authors: Guo Cai Zhou, Hai Qing Pei
The FEM simulations based of dislocation pile-up theory and crystal plastic theory and experiments are carried out.
The temperature field was calculated by the fluid analysis software CFD shown in Fig. 3(b).
(b) Modeling specimen fracture surface of rabbet The analyses above show that the theoretical researches carried out by the finite element simulation of crack initiation location, crack growth path and fracture locations of rabbet have a good agreement with experimental results and engineering application.
The fracture occurs along the {-1-11} slip plane. 3) The crack initiates in the upper edge of the rabbet contact area and grows alternately along the slip plane {1-1-1} and {-11-1}. 4) Researches carried out by the finite element simulation of crack initiation location, crack growth path and fracture location of rabbet have a good agreement with experimental results and engineering applications.
The temperature field was calculated by the fluid analysis software CFD shown in Fig. 3(b).
(b) Modeling specimen fracture surface of rabbet The analyses above show that the theoretical researches carried out by the finite element simulation of crack initiation location, crack growth path and fracture locations of rabbet have a good agreement with experimental results and engineering application.
The fracture occurs along the {-1-11} slip plane. 3) The crack initiates in the upper edge of the rabbet contact area and grows alternately along the slip plane {1-1-1} and {-11-1}. 4) Researches carried out by the finite element simulation of crack initiation location, crack growth path and fracture location of rabbet have a good agreement with experimental results and engineering applications.
Online since: January 2015
Authors: Hai Ying Wang, Zhi Gang Song, Liang Xu
Dynamic analysis of pedestrian bridges with pedestrian bridges with FEM and CFD [J].
Modelling and simulation of human-floor system under vertical vibration [C], in: Proceedings of SPIE, Smart Structures and Materials, Vol. 4327, March 5–8, Newport Beach, CA, USA, 2001, 513–520
[17] Quqiang Hu, Study of Crowd Load Model Based on Pedestrian Flow Simulation, Yunnan: A Dissertation Presented to Kunming University of Science and Technology for Master Degree of Engineering, 3-8
Simulation of pedestrian dynamics using a two-dimensional cellular automaton [J].
Modelling and simulation of human-floor system under vertical vibration [C], in: Proceedings of SPIE, Smart Structures and Materials, Vol. 4327, March 5–8, Newport Beach, CA, USA, 2001, 513–520
[17] Quqiang Hu, Study of Crowd Load Model Based on Pedestrian Flow Simulation, Yunnan: A Dissertation Presented to Kunming University of Science and Technology for Master Degree of Engineering, 3-8
Simulation of pedestrian dynamics using a two-dimensional cellular automaton [J].
Online since: May 2014
Authors: N. Mai-Duy, T. Tran-Cong, C. D. Tran, C.M.T. Tien, N. Thai-Quang
Introduction
In computational fluid dynamics (CFD), the velocity-pressure formulation can be discretized through the segregated and fully coupled approaches.
This paper presents a fully coupled approach for the fluid flow simulation with the field variables being approximated on uniform/non-uniform Cartesian grids by the CIRBF approximation scheme [2].
Conclusions In this paper, we introduce high-order compact integrated RBF approximations into a fully coupled approach for the numerical simulation of viscous flows governed by the velocity-pressure formulation.
Application to direct numerical simulations of compressible flows, Int.
This paper presents a fully coupled approach for the fluid flow simulation with the field variables being approximated on uniform/non-uniform Cartesian grids by the CIRBF approximation scheme [2].
Conclusions In this paper, we introduce high-order compact integrated RBF approximations into a fully coupled approach for the numerical simulation of viscous flows governed by the velocity-pressure formulation.
Application to direct numerical simulations of compressible flows, Int.
Online since: October 2012
Authors: Ling Li, Zhi Feng Yan, Zhao Wei Liu
Differ from wake in deep water, where the transverse body dimension D is usually small compared with the water depth H and the flow characteristics are determined mainly by the Reynolds number Re, the flow pattern of shallow wake depended uniquely on a shallow wake parameter S[2], S=CfD/H, where Cf is a quadratic law friction coefficient, which reflects the ratio of bottom friction to inertial force.
In the numerical simulation of shallow wakes, Lloyd et al.[7] made a series of experiments of conical islands with small side slope, and then simulated the results with both 2D and 3D numerical methods.
In order to capture these various wake patterns, the vorticity value is calculated to exhibit the flow patterns in the simulation.
The investigation suggests that 2D model achieves satisfied simulation results when S is small (S=0.19 and 0.27), for 2D large-scale flow structures dominate in wake region.
In the numerical simulation of shallow wakes, Lloyd et al.[7] made a series of experiments of conical islands with small side slope, and then simulated the results with both 2D and 3D numerical methods.
In order to capture these various wake patterns, the vorticity value is calculated to exhibit the flow patterns in the simulation.
The investigation suggests that 2D model achieves satisfied simulation results when S is small (S=0.19 and 0.27), for 2D large-scale flow structures dominate in wake region.
Online since: December 2010
Authors: Bor Jang Tsai, Koo David Huang, Chien Ho Lee
Then the analytic model of original ABE system has to be revised and analytic solution will be resulted and verified by the numerical solution of CFD.
This study has the simulation analysis and experimental proof by the reduced size model.
The model used is in a steady state condition in order to simplify the ABE system air-flow simulation procedure.
Fig.7 The numerical simulation of computational domains Verification of the numerical grids (Fig. 8, Fig. 9): in the same the settings conducted analysis of independent grid.
Temperature simulation results Fig. 11 is the comparison of temperature distribution for the fan was on (above) and off (below).
This study has the simulation analysis and experimental proof by the reduced size model.
The model used is in a steady state condition in order to simplify the ABE system air-flow simulation procedure.
Fig.7 The numerical simulation of computational domains Verification of the numerical grids (Fig. 8, Fig. 9): in the same the settings conducted analysis of independent grid.
Temperature simulation results Fig. 11 is the comparison of temperature distribution for the fan was on (above) and off (below).
Online since: November 2017
Authors: Miguel Vaz Jr., L.H. Perão, Paulo S.B. Zdanski
Turbulent fluid flow and conjugate heat transfer are assumed in the simulations.
The present simulation shows good approximation in both regions; however the SST formulation was not able to capture the maximum values of k/(ut)2, as predicted by DNS [13].
For the range of number of elements studied, the simulations show very small variations of the maximum kinetic energy, k, and its corresponding dimensionless measure, k/(ut)2.
The simulations show that high blockage ratio leads to equally high local heat transfer across the solid-fluid interface at the upper and lower channel walls.
Wilcox, Turbulence Modeling for CFD, third ed., DCW industries, La Cañada, 2008
The present simulation shows good approximation in both regions; however the SST formulation was not able to capture the maximum values of k/(ut)2, as predicted by DNS [13].
For the range of number of elements studied, the simulations show very small variations of the maximum kinetic energy, k, and its corresponding dimensionless measure, k/(ut)2.
The simulations show that high blockage ratio leads to equally high local heat transfer across the solid-fluid interface at the upper and lower channel walls.
Wilcox, Turbulence Modeling for CFD, third ed., DCW industries, La Cañada, 2008