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Online since: November 2012
Authors: Pei Qing Liu, Zhong Zhe Duan, Li Chuan Ma
Till the end of the 20th century, with the development of computer technology, CFD did not play a greater role..
Accordingly, the simulation with compressible N-S equation is required to be used to bypass the propeller's flow field.
Propeller's numerical simulation was conducted in this rotating coordinate where the rotating speed of the rotating fluid was 2575rpm.
Unsteady CFD Simulations of Propeller Installation Effects.AIAA 2006-4969
Trameland Jennie Barber.Modeling Propeller Flow-Fields Using CFD.
Online since: January 2012
Authors: Dong Qing Zhou, Qi Jie Liu, Ying Gao, Da Wei Qu, Jun Li
Research on LPG dual-spark Ignition Engine Combustion by CFD Dongqing Zhou, Jun Li, Ying Gao, Dawei Qu; Qijie Liu State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun China zhoudq09@mails.jlu.edu.cn Keywords: Power Machinery and Engineering; LPG engine; Ignition Methods; Combustion process Abstract .To study the dual-spark ignition methods of combustion of LPG, numerical simulation is conducted on the lean burn LPG turbocharged engine by three-dimensional simulation software.
Fig.1 2D grids of combustion chamber Fig.2 CFD grids of chamber Experimental Validations Indicator diagram is one of the ways to check out the validity of the model.
So in the simulation the variation trend of temperature field can be understood as the spread trend of flame.
Through the simulation analyze the influence of dual-spark ignition mode to cylinder combustion of the engine.
This simulation provides the theoretical guidance for the performance optimization of a dual-spark combustion process.
Online since: August 2013
Authors: Xing Jun Hu, Yu Kun Liu, Qi Fei Li, Guan Qun Li, Ao Liu
Numerical Simulation of Influence of Different Deflectors on Aerodynamic Characteristics of the Heavy Duty Truck Yukun Liua,Qifei Lib,Guanqun Lic,Ao Liud,and Xingjun Hue State Key Lab of Automobile Simulation and Control, Jilin University, Changchun 130022,China aliuyk1510@mails.jlu.edu.cn,bliqf1510@mails.jlu.edu.cn,cligq6510@mails.jlu.edu.cn dliuao1510@mails.jlu.edu.cn,ehxj@jlu.edu.cn Key words: Automotive Aerodynamics; heavy-duty truck; new deflector; CFD Abstract: In order to reduce the aerodynamic drag of heavy-duty truck, four different shape and style of deflectors based on the original one are added.
The deflector has been widely put into practical production and application [3].CFD software is used in this paper to realize the numerical simulation of flow field of the vehicle, and analyze the characteristics of the aerodynamic drag of a certain model of heavy-duty truck with a trailer.
Numerical Simulation The Computational Domain.
Numerical simulation of drag reduction by non-smooth surfaces in turbulent[J].
[3] HU Xing-jun,LI Teng-fei, and WANG Jing-yu, et al.Numerical simulation of influence of rear-end panels on flow field in wake of a heavy duty truck.Journal of Jilin University,2012,42
Online since: May 2023
Authors: Mohd Asri Mohd Nor, Muhammad Ammar Imran Mohamad Razki, Nor Fazli Adull Manan
Simulation of Liquefied Natural Gas (LNG) Fluid Flow on Ambient Air Vaporizer M.A.
The hexagon vaporizer model is designed using Solidworks, and heat transfer model is simulated using computational fluid dynamics (CFD) tool, Ansys Fluent solver.
Detail dimension of hexagon AAV (a) Isometric view of the model (b) Top view of the model CFD Simulation Geometry Modelling In this simulation phase, only a row of the finned tubes with total of 6 finned tubes is considered due to the limitation of time, vaporizer size and hardware specification.
Comparison of LNG temperature with previous study To validate the simulation model that is developed in this study, results from simulation are compared with the other literature.
Liu et al., is then used to validate the simulation results.
Online since: February 2015
Authors: Mu Qing Yang, Dong Li Ma
In this paper, computational fluid dynamic (CFD) was used to simulate the dynamic ground effect.
The dynamic simulation condition is shown in Fig. 3.
At the beginning of the simulation, the head of the UAV is 50m behind the edge of the deck, and at the ending of the simulation, the head of the UAV is 30m ahead of the edge of the deck.
The velocity of the UAV is 50m/s, simulation time is 1.6s, and time step is 0.04s.
CFD method was used to compute the unsteady aerodynamic force.
Online since: November 2011
Authors: G. Buvanashekaran, K. R. Balasubramanian, K. Krishna Murthy, T. Suthakar, K. Sankaranarayanasamy
Effect of Peclet Number on the Thermo Capillary Convection and Molten Pool Shape Formation during Laser Welding Using CFD T.
Keywords: Laser beam welding, CFD, Peclet Number, Marangoni convection, AISI-304, Finite control volume method.
A mathematical model is developed for the simulation of keyhole and molten pool formation during laser beam welding.
Numerical modeling and simulation A three dimensional model is developed.
Numerical simulation A non uniform well structured grid system is used for the simulation in which smaller grids are arranged near the weld area and larger grids for the remaining part.
Online since: August 2012
Authors: Hua Chun Wu, Zi Yan Wang, Xu Jun Lv
With the development of the computer technology, fluid mechanics and finite element theory, computational fluid dynamics (CFD) has been applied to the internal flow field and flow performance simulation of the heart pumps.
Basic Parameters Because blood is not pure Newtonian fluid, if use the non-Newtonian fluid to simulation, can make the simulation process to be very complicated.
CFD Simulation Results Analysis Both schemes converges around 160 steps, and the corresponding physical quantities no longer change.
Performance Characterization and CFD Analysis of an Axial Blood Pump [J].
Effect of Rotor Blade Angle and Clearance on Blood Flow[C]//The 7th International Conference on CFD in the Minerals and Process Industries, December 9-11, 2009, Melbourne, Australia, 2009:1~6
Online since: August 2013
Authors: Wen Hua Song, Zhen Chen, Miao Zhang, Qing Gong Li
The model of FDS is three-dimensional computational fluid dynamics software (CFD) based on large eddy simulation (LES), and can simulate the flow process of fire turbulent [3].
e) The simulation space is selected for the cube.
Exploratory CFD modeling of pool fire instabilities without cross-wind[J].
CFD Fire Simulation Using Mixture Fraction Combustion and Finite Vol2 ume Radiative Heat Transfer[J].
The numerical simulation research of pool fire[J].
Online since: November 2014
Authors: Ling Di Tang, Shou Qi Yuan, Yue Tang
In this paper, the helically coiled water pipe was simulated by CFD software.
Piazza and Ciofalo [7] predicted the pressure drop in helically coiled pipe in turbulent condition by numerical simulation.
Therefore, the CFD prediction and analysis technology were used in this paper.
Numerical Simulation Simulation object models are shown in Fig.4.
In these simulations, reel diameters range from 500mm to 2000mm with 50mm interval, Reynolds numbers range from 43040 to 172166, and Dean numbers range from 8587 to 66315.
Online since: September 2012
Authors: Xiao Liang, Yu Qin, Jia Ning Zhang
The Ship and Ocean Engineering Dept. of UK University of Glasgow used the CFD method and ship model testing method to make a research comparison on forces on water surface speedboat in static water [7].
In recent years, with the computer technology developing rapidly, the numerical simulation technique has also had a great development with various pieces of CFD software being more and more powerful in function and the calculation accuracy being increasingly higher.
Numerical simulation calculation results and analyses 3.1 Resistance calculation result analysis Numerical simulation calculation of hydroplane direct route motion is done on the FLUENT platform.
Fig. 5 Curves for resistance varying with speed 3.2 Flow field numerical simulation display The following is an investigation of the flow field change in the numerical simulation calculation process for hydroplane direct route motion.
The Analysis of Computational Fluid Dynamics – Principles and Applications of CFD Software [M].
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