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Online since: December 2014
Authors: Mohammed Al-Ghoul, Fatah O. Al Ghuol, K. Sopian, Shahrir Abdullah, Mohammed Sheldin, Ali Whaad
Simulation result shows the predicted PCM temperature at first and last layer closely match with the analytical data from CFD.
CFD 600Sec. 0.000321Sec.
Table 1 shows RBFNN model calculated first and last layer PCM comparison sample with CFD model, it can observed that the accuracy of the RBFNN and CFD has same superior when compared to each other based on mean average error (MAE).
Both Matlab software and CFD software has been used to get the data for training and testing.
The Simulation results show that Better performance was obtained with RBFNN for reduction of the effort and time required determining the temperature in PCM as compared with CFD.
Online since: November 2012
Authors: Azmin Shakrine Mohd Rafie, Fairuz Izzuddin Romli, Mohamed Thariq Hameed Sultan, Noorfaizal Yidris, X.H. Cheong
The simulation adopted a fully turbulent flow, having Reynolds number of 600 and the spinning of the cylinder at 100 RPM.
Computational Approach I.1 A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to simulate the flow field.
A computational fluid dynamic (CFD) code ANSYS 14 FLUENT TM is used to obtain lift coefficient of the rotating cylinder.
The total of mesh is about 5000 mesh for a 2D simulation; Meshes are concentrated near to the model surfaces to increase the accuracy of the simulation Validation.
All simulation is performed with Reynolds number around 600 and the cylinder spinning at 100 RPM.
Online since: June 2009
Authors: An Shik Yang, Chiang Ho Cheng, Li Yu Tseng, Tsung Hsing Chan
A Novel Piezoelectric Valveless Micropump with an Integrated Diffuser/Nozzle Bulge Piece Design Tsung-Hsing CHAN 1, Chiang-Ho CHENG1, a, An-Shik YANG2, b and Li-Yu TSENG2 1 Department of Mechanical and Automation Engineering, Da Yeh University, Chang Hua 515, Taiwan 2 Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei 106, Taiwan a chcheng@mail.dyu.edu.tw, b asyang@ntut.edu.tw Keywords: Valveless micropump, Piezoelectric actuator, CFD simulation, MEMS.
In the analysis, the computational fluid dynamics (CFD) software ACE+® was utilized to examine the time-varying flow phenomenon in a full-scale PZT micropump throughout an actuation cycle.
Numerical simulations were also conducted to study the time-varying flowfield encountered inside the micropump.
Theoretical Model Simulations were conducted using the ESI-CFD ACE+ ® computer software to explore the internal flowfield in a piezoelectric valveless micropump.
Results and discussion In simulations, Fig. 3 shows the numerical grids of a full-scale piezoelectrically valveless micropump.
Online since: September 2013
Authors: Cun Ming Ma, Jia Li Xie
With the CFD wind tunnel technique, the flutter derivatives are obtained under smooth flow with the method of forced vibration.
According to CFD, the distribution of wind velocity with and without wind screens under the design wind speed of 45.5m/s is shown in Fig. 6.
Study on the crosswind environment around the tower and deck of sea-crossing bridge by CFD[J].
Numerical wind tunnel simulation of wind loads parameters for a specially shaped bridge[J].
Numerical Simulation on Wind Flow over Step-shaped Cliff Topography with Rough Surface[J].
Online since: April 2012
Authors: Mohd Faizal, Md Seri Suzairin, Sh. Ezamuddin, Vijay R. Raghavan
Air flow investigation was carried out on the empty bed via CFD approach.
This study attempts to investigate the swirling motion of the fluidizing gas inside the bed via CFD investigation.
Fig. 2 SFB actual system and computation domain in CFD Periodic Boundry.
Simulation of a SFB on actual scale will result high computation time.
In CFD numerical simulation, truncation error and round-off error occurs simultaneously.
Online since: September 2013
Authors: Agoes Priyanto, Adi Maimun, Y.M. Ahmed, Y. Mohamed
The Ansys Fluent v.6.2 software was used to solve Reynold Average Navier-Stokes (RANS) equations, and Icem CFD as a mesh generator.
The computational fluid dynamics, as known as the CFD [1,2] has become a practical tool in the simulation of hydrodynamics of marine devices, especially propeller.
The CFD study which focused on the effect of the size of computational domain had been carried out by Zadravec, et.al [4].
The local pressure minima in Fig.4 were obtained at the simulation test for the propeller-to-rudder interaction.
Flexible CFD meshing strategy for prediction of ship resistance and propulsion performance.
Online since: January 2013
Authors: Tzu Chen Hung, Hung Chien Chen, Yi Feng Chen
In 2005, S.H.Noie[2] indicated that the lowest effectivenessof heat exchanger would avoid the heat capacity rate equal to 1 according to simulation and experimental results.
Therefore, the case 3 was selected in the following simulations that to reducing computing time.
Fins pitch is the minimum impact parameter in this simulations (about 1%), because increasing pitch would reduce turbulent intensity in the heat exchange process.
Ponnusamy, “Effectiveness charts for counter flow corrugated plate heat exchanger,” Simulation Modelling Practice and Theory, Vol. 19, (2011), pp. 777-784
Subramanian, “CFD Modeling of Compact Offset Strip-Fin High Temperature Heat Exchanger,” University of Nevada, Las Vegas, (2005)
Online since: August 2013
Authors: Xi Liang Chen, Qing Nan Shi
(3) The simulation and prediction of starch gelatinization process.
Computational fluid dynamics (CFD) is used to model the entire bread baking process [18-20].
Designing process controller for a continuous bread baking process based on CFD modelling.
Simulation of starch gelatinisation during baking in a travelling-tray oven by integrating a three-dimensional CFD model with a kinetic model.
Computational fluid dynamics (CFD) modeling for bread baking process-a review.
Online since: October 2010
Authors: Marcos A.S. Barrozo, Claudio Roberto Duarte, I. Petri Junior, D.A. Santos
MIXTURE OF PARTICLES’ INFLUENCE IN COMPUTER SIMULATIONS OF A SPOUTED BED D.
João Naves de Ávila, 2121, Bloco 1K, Campus Santa Mônica, Uberlândia - MG, CEP 38408-100 aclaudiofequfu@gmail.com Keywords: spouted bed, CFD, particle mixture Abstract.
Studies of numerical simulation techniques and computational fluid dynamics (CFD) have become popular in the field of gas-solid two-phase flow.
Table 1-Simulation conditions.
Rahimi: CFD Simulation of Gas-Solid Flow in a Spouted Bed with a Non-Porous Draft Tube, Chemical Engineering and Processing: Process Intensification, In Press, Available online 23 September 2009
Online since: February 2024
Authors: Jingtian Mao, Hiroshi Usuki, Chikara Morigo, Shinji Yukinari
In this study, to improve the machining efficiency (processing time) by using end mill, a prototype of end mill with internal coolant nozzles (both rake side and flank side) was designed and CFD (Computational Fluid Dynamics) simulations were conducted to find out the relatively effective coolant supply method for coolant penetrating in cutting zone of flank face mainly.
Coolant nozzle outlet CFD Simulations The simulations were completed by MSC Cradle.
In the future research, CFD simulation will be conducted with molecular scale coolant as in cutting experiments coolant was sprayed out into mist instead of liquid.
Data acquisition location Fig. 9 shows the simulation results on data point 2 in Fig. 8(a).
Results of CFD simulations Cutting Experiments The cutting experiments were conducted to verify the real effect of UHPC in the cutting of Ti-6Al-4V.
Showing 1481 to 1490 of 5269 items