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Online since: August 2011
Authors: Xia Qing Zhang, Cheng You Xing, Liang Yu Zhao
The time-averaged thrust coefficient and the propulsive efficiency are evaluated using CFD techniques.
The commercial CFD package, FLUENT 6.3.26, is employed with assuming incompressible laminar flow.
The method is attractive because it produces high-order response information and is computationally cheap compared to techniques with similar capabilities, such as Monte Carlo Simulations (MCS).
Online since: August 2013
Authors: Chao Wang, Shan Tu, Yu Lin Tang, De Dong, Yue Juan Shi
Morita et al. [1] used CFD computational and experimental methods to analyze the reason for steam control valve piping vibration in the semi-opening degree of the regulating valve, had experimental study on the flow-induced vibration of the control valve under the weak constraints, and analyzed the characteristics of the vibration model in the case of half-open degree.
CFD simulations and experiments of flow fluctuations around a steam control valve[J].
Online since: September 2011
Authors: Yu Jian, Ying Yuan Tian, Guo Zhao Yu
Numerical simulation model of trajectory without wind.
Opening canopy fully is a complicated aerodynamic process, and many scholars has done many CFD simulation and established nonlinear theory model.
Contrast analysis of testing and numerical simulation Simulation theory for trajectory of bomb with parachute at low altitude condition.
The trajectory simulation of bomb with parachute at low altitude condition can be divided into all trajectory simulation at single bombing and spread simulation of multiple bombing.
Contrast analysis of testing results and simulation data.
Online since: November 2012
Authors: Xing Jun Hu, Peng Guo, Bo Yang, Feng Tao Ren
Effect of Sunroofs and Side Windows on Aerodynamic Characteristics of Transit Bus HU Xingjun1, a, REN Fengtao1,b ,YANG Bo1,c, and GUO Peng1,d 1State Key Laboratory of Automotive Simulation and control, Jilin University, Changchun 130022, China ahxj@jlu.edu.cn,btao-ss@163.com,ciaa@jlu.edu.cn,dppnfs@hotmail.com Keywords: Aerodynamics, transit bus, flow field, numerical simulation, sunroofs and side windows Abstract.
Analysis of Simulation Results Flow Field of the Transit Bus under Different Working Conditions.
References [1] Shiwei Li, Experimental study and numerical simulation of the aerodynamic characteristics of the class passenger car body and drag reduction measures, China Aerodynamics Research and Development Center, Mianyang, China(2010)
[3] Anonymous authors, SC/Tetra Version 9.0 User Guide, User's Guide Basics of CFD Analysis, P2-26, P2-27(2010)
[4] Min-Ho Kim, Jong-Young Kuk and In-Bum Chyun, A Numerical Simulation on the Drag Reduction of Large-Sized Bus using Rear-Spoiler, SAE paper 2002-01-3070(2002)
Online since: October 2013
Authors: Jing Lei Xu, Xing Chen Shao, Qing Yang, Ge Gao, Ya Chao Di
The results show that the method is correct and provides a reference for the simulation of the unsteady multi-body separation. 1.
Numerical simulation of multi-body separation is faced with many challenging issues, mainly due to the impact of moving boundaries, so the grid needs to generate constantly.
Complex overlapping grid method and multi-body motion unsteady flow simulation[D].
Numerical simulation of unsteady flows around aircrafts experiencing forced motion and free-flight[D].
CFD Wing/Pylon/Finned Store mutual interference wind tunnel experiment[R].
Online since: September 2024
Authors: Helio Pedro Amaral Souto, Ralph Alves Bini da Silva Almeida, Guilherme Pereira Emmerick, Grazione de Souza
Numerical simulation of petroleum reservoirs Numerical reservoir simulation was commonplace in the petroleum industry in the 1960s [1], and we have since applied it in several areas.
Currently, simulators are more robust and incorporate more physical phenomena than their precursors, including recent Computational Fluid Dynamics (CFD) techniques [4].
Simulation of unconventional reservoirs The numerical simulation of flow in petroleum reservoirs [6] is a conventional tool in the oil and gas industry, mainly applied to predict production scenarios.
Thurnau, H. van Pooçen, The fluid flow simulation equations, SPE Symposium on Numerical Simulation of Reservoir Performance, Dallas, Texas, USA, 1968
Phillips, GPU Accelerated Approach to Numerical Linear Algebra and Matrix Analysis with CFD Applications, MSc thesis, University of Central Florida, USA, 2014
Online since: December 2012
Authors: Zhe Liu
Introduction Buffeting response of bridge is a important problem in bridge wind engineering, the traditional method to study it is the one in frequency domain, such as Scanlan [1], Chen etc [2], Zhe Liu [3], with the development of CFD technique, the buffeting response prediction on it is worthwhile to be studied.
Since the across-flow oscillation is important to predict the buffeting response of bluff body, in current simulations the movement of bluff body is controlled in the across-flow direction, and two types of inlet boundary conditions are considered to compare the different influence of them on the flow around the square cylinder, one is the steady inlet boundary and the other is the unsteady one. 2 Descriptions of Simulation Cases The block structured grid is also used in current simulation cases, see Fig.1.
To compare the different response of square cylinder from different LES models, the standard LES, LES dynamic and LES WALE models are considered in current simulations.
And the oscillation induced by the flow of current simulations can be approximated as a narrow band response approximately after the reduced time step 100, but the whole response process is a mix-band response including the broad and narrow band.
(1) Current simulations basically capture the characteristics of square cylinder, and the FSI procedure of buffeting response simulation proposed by Zhe Liu [6] can be used in future buffeting response predication.
Online since: October 2015
Authors: Roberto B.R. Costa, Ramon Molina Valle, Raphael Braga, Fábio Radicchi, Raniro A. Coelho
Fig. 1(b) presents the internal volume which was extracted for the simulation.
“Numerical simulations of a prechamber autoignition engine operating on natural gas.” 
“Numerical simulation of two-stage combustion in SI engine with prechamber.” 
Modeling of a Torch Ignition System Using One-Dimensional Model of Computational Simulation.
Simulation of pre-chambers in an engine combustion chamber using available software.
Online since: December 2018
Authors: Erika O. Avila-Davila, Victor M. Lopez-Hirata, Luis M. Palacios-Pineda, Ignacio Ramirez-Vargas, Luis G. Trapaga-Martinez, Juan M. Alvarado-Orozco, Maria M. Cueto-Rodriguez, M.L. Saucedo-Muñoz
Previously, it was carried out a computational fluid dynamics (CFD) calculation [10] to obtain the temperature produced by the gas flow on the blade surface.
The CFD domain was considered between the end of the first stage and the beginning of the second stage nozzle.
Lu, Finite Element Simulation on Thermal Fatigue of a Turbine Blade with Thermal Barrier Coatings, J.
Online since: October 2011
Authors: Mohammad Wadizadeh, Mohammad Mahdi Doustdar, Mohammad Mojtahedpoor
Combustion phenomenon is very unintelligible; therefore fully simulation of flow in this process needs a large amount of cost and time.
Understanding these processes and being able to represent them in the context of a CFD simulation program is of great importance both for researchers and for the industry.
CFD offers a significant and a powerful tool to evaluate the operation of practical combustion systems and helps designers of these systems to come up with modified versions that have better performance characteristics.
Different previous researches investigate, both experimentally and by numerical simulation, the vaporizing sprays and the droplet interaction under different operating conditions; see for example references [1–8].
The numerical procedure used in this simulation is based on the discrete-droplet model (DDM).
Showing 3971 to 3980 of 5269 items