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Online since: January 2024
Authors: Zazuli Mohid, Kamaruddin Kamdani, Mohd Rasidi Ibrahim, Maizatulazrina Yaakob, Fareza Fazidi, Razali Abidin, Tarmizi Ahmad, Saiful Anwar Che Ghani, Daing Nafiz Daing Idris
A study on the wing design and orientation of a WIG vehicle from an industry was performed through simulation.
In the simulation study, the Cl values were referred to the NACCA66.
Both wing simulations were carried out by ignoring the ground surface exitance.
However, this simulation study was not considered the Wing-in-Ground effect.
Geeri, “Flow behaviour on aerofoils using CFD,” J.
Online since: September 2017
Authors: Adelaida Fanfarová, Ladislav Mariš
Possibilities of Using Simulation Simulation means scientific or technical imitation of certain action, process or object, in most cases using IT technology.
Simulation enables change of entry parameters.
Nowadays, computer simulations are complementary to real simulations on a reference object (e.g. extinguishment of a vehicle fire, evacuation of people, fire in a tunnel).
It would offer connecting live and constructive simulations.
Dubec, Design and Assessment of Shape of Protective Structure by Usage of CFD Software Environment Ansys Fluent, in: Durability of Critical Infrastructure, Monitoring and Testing, Proceedings of the ICDCF 2016, Lecture Notes in Mechanical Engineering, pp. 200-210.
Online since: March 2011
Authors: Arup Kumar Borah
Now, by applying the average normal velocity as an estimate of the constant average phase speed [19] On the other hand, the advective derivative condition for the streamfunction can be obtained Taking into account the and the auxiliary expression can be Eq. (16) can be expressed as second order differential equation Discretizing the Eq. (18) with respect to the time variable we obtained the final expression of the outflow boundary condition for the streamfunction We are interested only in transient results or stationary results obtained from pseudotransient simulations and the advective derivative conditions at outflow. 3.
Gresho, Some current CFD issues relevant to the incompressible Navier-Stokes equations, Comput.
M., Some interesting issues in incompressible fluid dynamics both in the Continum and in Numerical simulations, Advances in Applied Mech. 28, pp. 45-140, 1992
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: November 2012
Authors: Ming Yu Yang, Jian Ying Xu, Si Yuan Chen
Presently the sustainable building environment and urban ecology team of Chongqing University is building up the model framework based on the existing software such as the series of Autodesk Revit design software, the professional performance simulation analysis software, the construction scheme simulation software and the facility operation simulation software etc.
At the same time, to process the CFD numerical simulation by GBXML data format transferred to PHOENICS, to analyze the air movement and the temperature distribution with non-air movement and different velocity in semi-outdoor and to provide the basic support for the comfort evaluation of the outdoor space personnel.
In fact, there are various information interaction, information feedback and iteration process between performance simulation software and the architecture, structure and facility design software and among different performance simulation software.
Fig. 6   The information flow Fig.7 An information flow model among performance simulation software   of simulation software It is known from the above example that performance simulation software of different specialties is not independent but highly related information dependence during the planning and design process of green building.
Construction engineering design process simulation model [D] Chongqing University
Online since: November 2016
Authors: Hiromi Nagaumi, Kang Cai Yu, Shi Jie Guo
Simulation Three-dimensional geometry of a half section model was applied in numerical simulation taking advantage of the inherent symmetry.
A transient thermal conduction and fluid flow analysis were carried out for the casting process using a commercial CFD package, FLUENT, and the dynamic mesh was applied to simulate the casting process.
Based on the datum from temperature measurements and simulation results, the liquidus and the solidus positions are calculated and demonstrated in the Fig.5 (b).
(1) The results of sump depth measured by temperature recording with thermocouples and by simulation are both thought to be accuracy
And the solid fraction that Cu could diffuse is estimated to be 0.9 according to the numerical simulation result.
Online since: November 2012
Authors: Chao Xiong, Kai Xiang Yang, Yi Nong Wu, An Kuo Zhang
A computer simulation model has been established for performance prediction and optimization, which is taken as the primary guide for warm end heat exchanger design.And computational fluid dynamic(CFD) software fluent and CFdesign developed by the analyze of thermodynamic behaviors of gas parcels in the oscillating flow are used to help analyzing the design structure.Schematics of the basic warm end heat exchangers the cylinder copper screen warm end heat exchange and the cylinder gap warm end heat exchangers in coaxial pulse tube cryocooler are shown in figure 1 and figure2.The ideal warm end heat exchanger can supply three main functions: (1) High efficiency for the heat exchange,especially in those situation of low temperature and large cooling capacity (2) Restrain the instability and vortex  flow in the gap, and strengthen the heat exchange of internal gas and solid (3) Debase the warm end heat exchanger's volume and mass to make the configuration of pulse tube cryocooler more
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