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Online since: April 2011
Authors: Chun Ming Shen, Bo Quan Lin, Fan Wei Meng
ANSYS software is the financial structure, thermal, fluid, electromagnetic, acoustic at one of the major CAE finite element analysis software, is the first integrated computational fluid dynamics (CFD) capabilities, and is the first developed a multi-physics coupling analysis functions software.
Table 4 The characteristic parameter table of all nozzle models entrances Model No. 1 2 3 4 5 6 7 8 9 X direction of the speed of imports [m/s] 23.0 16.6 13.2 13.6 13.1 26.4 12.5 8.6 8.0 Inlet diameter [mm] 4.3 5.0 5.7 5.6 5.7 7.0 5.8 7.0 7.3 According to the above design load of the external conditions on the model simulation, simulated through ANSYS software and shown in Figure 1 that the fluid velocity clouds within 9 nozzle models, the whole process speed change curves of the center of the models from the entrance to the exit shown in Figure 2, each nozzle can be obtained through statistical maximum value of the flow velocity.
According to the method described above, established the nozzle model according to the structural parameters in Table 6 and experimented the numerical simulation of flow to out from the nozzle model, to get the maximum flow velocity is 5456.1m/s, so can calculate the acoustic noise ratio: It can be seen that the same of with the result of Taguchi method.
Online since: August 2013
Authors: Atsushi Mitani, Phuong Hoai Le, Thien Xuan Dinh, Shinichi Hirai
., Sapporo-Hokkaido, 005-0864, Japan agr0081se@ed.ritsumei.ac.jp, bthien@cfd.ritsumei.ac.jp, ca.mitani@scu.ac.jp, dhirai@se.ristumei.ac.jp Keywords: Micro-parts Feeding, Saw-tooth Surface Feeder, Experiment.
The dynamic of micro-part have also investigated, including two linear motions and rotation orientation, using an experimental procedure and a proposed simulation model [14].
System Design and Dynamics, Vol. 6, No. 1 (2012) [14] Phuong Le, Xuan Thien Dinh, Atsushi Mitani, and Shinichi Hirai, Experiment and Simulation of Micro-parts Dynamics with Roughness Effect, 2012 IEEE/ASME Int.
Online since: October 2010
Authors: Zu Wen Wang, Ang Sun
In order to calculate the pressure distribution of flow field in gas bearing, the N-S equation and appropriate turbulent equation will be solved with CFD software due to the complicated flowing state in the entrance area under the condition that the thickness of gas film is large.
We can see from the above simulations that the load capacity of ring inlet tapered recess gas bearing is high, especially the tapered recess height can be significantly reduced, its gas volume ratio decreases, and the stability is enhanced as well.
Fig. 7 Tapered recess height on the pressure distribution (P=1.4MPa, r0=0.025mm, hm=40µm, r1=5.025mm, r2=40mm) Fig. 8 Gas film thickness on the pressure distribution (P=1.4MPa,h0=30µm, r0=0.025mm, r1=3.025mm, r2=40mm) Table 1 Tapered recess height on gas volume and load capacity (central gas supply) Tapered recess height [µm] Gas volume ratio Load capacity [kg] 60 19.0381/200.96 (9.47%) 283.8 40 12.692/200.96 (6.32%) 277.2 20 6.346/200.96 (3.16%) 267.2 Table 2 Gas film thickness on gas volume and load capacity (ring gas supply) Gas film thickness [µm] Gas volume ratio load capacity [kg] 40 7.6655/200.96 (3.81%) 269.1 30 7.6655/150.72 (5.08%) 326 20 7.6655/100.48 (7.62%) 368.7 Conclusion On the numerical simulation and experiment about tapered recess gas bearing with two different ways of gas supply, we can get conclusions as below: (1) Under the condition that the clearance is large for the tapered recess gas bearing with central
Online since: February 2017
Authors: Elena Felicia Beznea, Ionel Chirica, Adrian Presura
A finite element tool for structural analysis of composite multi-hull structures have been developed to solve fluid structure interaction by coupling finite element analysis and CFD.
[5] Md Hafizur Rahman, Siyuan Ma, Hassan Mahfuz, Finite element simulation of composite ship structures under extreme wave and slamming loads, GCMS '13 Proceedings of the 2013 Grand Challenges on Modeling and Simulation Conference, 2013, Article No.9
Online since: August 2013
Authors: Shi Ding Zhang, Hai Lian Wang, Jing Ping Mei
There are many spectrum sensing techniques, such as energy detection (ED), matched filter (MF), cyclostationary feature detection (CFD), and maximum eigenvalue detection (ME) [4-6].
In Section IV, the simulation results are showed.
Simulation Results In this section, we show the performance of the proposed algorithm and compare with other algorithms by Monte-Carlo simulation.
In the simulation, there are 16 SUs to participate in the cooperative sensing and A=0.5, the number of samples was set to N = 512.
Simulation results show that the performance of MEC algorithm outperforms that of the equal weight and the SNR-weight algorithm.
Online since: September 2016
Authors: Qiang Zhu, You Feng He, Da Quan Li, Jiao Jiao Wang, Fan Zhang
Viscosity estimation of semi-solid alloys based on thermal simulation compression tests, Int.
Gouveia, Modeling and Simulation of Maximum Power Point Tracker in Ptolemy, J.
Broadly speaking, there are three types of CFD models for multiphase models, namely, volume of fluid, and mixture and Eulerian model [[] T.
Schreiber, Numerical Simulation of Dense Gas-Solid Multiphase Flows Using Eulerian-Eulerian Two-Fluid Model.
The heat transfer was taken into account for all the cases of numerical simulation.
Online since: August 2013
Authors: Xiang Jun Fang, Wen Long Sun, Qi Tai Eri, Shi Long Liu, Wen Chuan Wang
Energy separation phenomena of different gases were investigated by means of three-dimensional Computational Fluid Dynamics (CFD) method.
Grid Model Fig. 2, Gird of the vortex tube The significance effect of numerical calculation accuracy is decided by quality and quantity Grid, thus the grid division becomes a key link with specific conditions in the simulation.
Encrypted grids, which are used in the hot end is shown in Fig. 2, can be clearly seen and its first thickness is 10-6m.At the same time encrypted grids are also put to use for ensuring the accuracy of numerical simulation at hot circumferential end exit and swirl chamber nozzle place.
The mass numerical simulations results indicate that the heat conduction process is relatively slow so that viscosity has little influence during this process.
Acknowledgments I would like to appreciate the support from various sides and extend my sincere thanks to my lab which gave me this opportunity to conduct simulation.
Online since: March 2025
Authors: Siti Nor Asimah Hamid, Kannigah Thirunanasambantham, Zuhaila Ismail, Lim Yeou Jiann
Numerical Simulation of Heat Transfer in MHD Hybrid Blood Nanofluid Flow through a Bifurcated Stenosed Artery Siti Nor Asimah Hamid1,a, Kannigah a/p Thirunanasambantham1,b, Zuhaila Ismail1,c,*, Lim Yeou Jiann1,d 1Department of Mathematical Sciences, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia asitinorasimah@graduate.utm.my, bkannigah@graduate.utm.my, c*zuhaila@utm.my, djiann@utm.my Keywords: Magnetohydrodynamic; Stenosis; Bifurcated Artery; Heat Transfer; Hybrid Nanofluid.
Using COMSOL Multiphysics, simulations of velocity, heat flux, and WSS were conducted to analyze the flow dynamics.
Eldin, “Numerical computations of blood flow through stenosed arteries via CFD tool OpenFOAM,” Alexandria Eng.
Waqas et al., “Numerical and Computational simulation of blood flow on hybrid nanofluid with heat transfer through a stenotic artery: Silver and gold nanoparticles,” Results Phys., vol. 44, no.
Vafai, “Computational biomedical simulations of hybrid nanoparticles (Au-Al2O3/ blood-mediated) transport in a stenosed and aneurysmal curved artery with heat and mass transfer: Hematocrit dependent viscosity approach,” Chem.
Online since: June 2014
Authors: Zhong He Han, Fu You Li, Ya Lei Jia, Ji Xuan Wang, Ya Kai Bai
Troldborg has calculated Steady aerodynamics of the fixed trailing edge flap using CFD method. and show that trailing edge flap can increase the lift force of the airfoil [4].
[3]Zhao Wanli,Zhang Lida, Numerical simulation on the flow control mounting gurney flaps for a large horizontal wind turbine.
Online since: March 2011
Authors: Matthew O. Zacate, Herbert Jaeger
The timing information is derived from the fast signal by so-called constant fraction discrimination (CFD).
The gated CFD signals are then logically ORed to provide the start signal for the TAC.
In particular a long delay of the CFD signals is required in order to gate them by the slower energy discriminator signals.
A simulation of fp for a sequence of anneals is shown in Fig. 12.
A simulation of fp for a sequence of anneals is shown in Fig. 13.
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