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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.
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: July 2022
Authors: Oleksii Tsapko, Ruslan Likhnyovskyi, Vitalii Kovalenko, Andrii Onyshchuk
Finally, the challenges and problems in both the fundamental research, using laboratory wires and numerical simulations, and the applied research, using commercial cables and empirical function approaches, are thoroughly discussed to guide future wire fire research and the design of fire-safe wire and cables.
A three-dimensional (3-D) transient computational fluid dynamics (CFD) code FDS is adopted in this paper to simulate these characteristics related to cable burning.
In order to assess the CFD fire models used in this code, a burning test using the control cable with the outer jacket of polyvinylchloride (PVC) and the inner insulation of cross-linked polyethylene (XLPE) is conducted.
The present simulation works can provide useful information for the plant staff or the researcher as they would perform the fire hazard analysis in the NPPs using the FDS code.
Insulated cable temperature calculation and numerical simulation.
A three-dimensional (3-D) transient computational fluid dynamics (CFD) code FDS is adopted in this paper to simulate these characteristics related to cable burning.
In order to assess the CFD fire models used in this code, a burning test using the control cable with the outer jacket of polyvinylchloride (PVC) and the inner insulation of cross-linked polyethylene (XLPE) is conducted.
The present simulation works can provide useful information for the plant staff or the researcher as they would perform the fire hazard analysis in the NPPs using the FDS code.
Insulated cable temperature calculation and numerical simulation.
Online since: May 2014
Authors: Sammy Diasinos, James Keogh, Graham Doig, Tracie J. Barber
Barber1, Sammy Diasinos2
1School of Mechanical and Manufacturing Engineering, University of New South Wales,
Sydney NSW 2052, Australia
2Science Faculty, Department of Engineering, Macquarie University
North Ryde NSW 2109, Australia
j.keogh@student.unsw.edu.au
Keywords: ground effect, cornering condition, inverted wing, aerodynamics, automotive aerodynamics, CFD
Abstract.
All simulations were run in 64 bit double precision using a second-order upwinding discretization scheme for all equations.
Simulations were run across 64 processes on the UNSW Trentino cluster.
The walls for all simulations were modelled as slip, zero-shear walls.
All simulations were run in 64 bit double precision using a second-order upwinding discretization scheme for all equations.
Simulations were run across 64 processes on the UNSW Trentino cluster.
The walls for all simulations were modelled as slip, zero-shear walls.
Online since: July 2012
Authors: Zheng Kui Guo, Heng Zhi Chen, Jing Liu
So, the reforming reaction kinetic and adsorbing reaction kinetic rate were reviewed at firstly, and then the simulation on the SESMR process was also summarized in this article.
Sadeghi et al [16] used a three-dimensional CFD technique to simulate SMR process in an industrial fixed bed.
Simulation results showed that a steam to carbon ratio of more than 4 increased in the ratio did not have a notable influence on methane conversion, while it strongly depended on the reactor skin temperature.
Simulation of gas-solids flow in sorption-enhance SMR process Intensifying the SMR process with in situ adsorptive CO2 is a complicated multiphase reaction system and the numerical research is important for SESMR process because it is much easer to study the more factors that affect this complicated reaction system [26].
Most of the simulations for SESMR process were carried out under steady-state operation.
Sadeghi et al [16] used a three-dimensional CFD technique to simulate SMR process in an industrial fixed bed.
Simulation results showed that a steam to carbon ratio of more than 4 increased in the ratio did not have a notable influence on methane conversion, while it strongly depended on the reactor skin temperature.
Simulation of gas-solids flow in sorption-enhance SMR process Intensifying the SMR process with in situ adsorptive CO2 is a complicated multiphase reaction system and the numerical research is important for SESMR process because it is much easer to study the more factors that affect this complicated reaction system [26].
Most of the simulations for SESMR process were carried out under steady-state operation.
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
Online since: October 2014
Authors: Radu Rosca, Ioan Tenu, Andreea Diaconu, Tibor Rittner
Ade, Design of a Recycling Tunnel Sprayer using CFD Simulations, Transactions of the ASAE, Vol. 48(2), 2005, pp. 463-468
Online since: December 2012
Authors: Jin Tang, Bao Li Zhang, Chuan Zhi Mei, Lin Hua Piao
(a) rectangular acvity (b) streamlined acvity 1 (c) streamlined acvity 2
Fig. 2 Two-dimonsional simplified models of sensitive cavity of three structures
Solve with Finite Element Method
The FLOTRAN CFD analysis of ANSYS software is an advanced tool used to study two-dimensional and three-dimensional flow field, which can be used to analyze the movement of airflow in cavity [4], it typically comprises modeling, loading and solving
Wang: Numerical Simulation Technology of Practical Engineering and its Practice (Northwestern Polytechnical University Press, Xi’an 1999).
Wang: Numerical Simulation Technology of Practical Engineering and its Practice (Northwestern Polytechnical University Press, Xi’an 1999).
Online since: November 2011
Authors: Wei Xia, Qing Hua Wang, Dong Hua Deng, Zhi Min Hou
A study of abrasive waterjet characteristics by CFD simulation[J].
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.
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.
Online since: September 2008
Authors: Hans Joachim Winkel, Henning Knuths, Mathias Paschen
All simulation models are based on two significant assumptions namely all parts of the gear are
exposed to the same undisturbed water current and the hydrodynamic loads may be represented by
dimensionless hydrodynamic coefficients which depend on the Reynolds number, the extended
Froude number, see Stengel & Fridman (1977), and a couple of different geometrical and physical
parameters of the net respectively the net material only.
It is sufficiently known that the application of these coefficients may lead in some cases to excellent simulation results but in other cases to those which don't satisfy the expectations of experts.
Because of size and flexibility of modern nets and due to substantial fluid-structure interactions it does not seem to be realistic to expect a powerful as well as a handy CFD-based computer programme which can be used for a precise prediction of shape, load and stress distribution of a complete trawl net in the next few years.
Lee: Contributions of Theory of Fishing Gears and related marine Systems, Vol.4, Pukyong National University, Busan, 2006 Hu, F.; Shiode, D.; Wan, R.; Tokai, T. (2006) Accuracy evaluation of numerical simulation of mid-water trawl nets.
KG, Rostock, 2002 Priour, D. (2000) Study of a grid in a cod-end: numerical simulations.
It is sufficiently known that the application of these coefficients may lead in some cases to excellent simulation results but in other cases to those which don't satisfy the expectations of experts.
Because of size and flexibility of modern nets and due to substantial fluid-structure interactions it does not seem to be realistic to expect a powerful as well as a handy CFD-based computer programme which can be used for a precise prediction of shape, load and stress distribution of a complete trawl net in the next few years.
Lee: Contributions of Theory of Fishing Gears and related marine Systems, Vol.4, Pukyong National University, Busan, 2006 Hu, F.; Shiode, D.; Wan, R.; Tokai, T. (2006) Accuracy evaluation of numerical simulation of mid-water trawl nets.
KG, Rostock, 2002 Priour, D. (2000) Study of a grid in a cod-end: numerical simulations.