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Online since: February 2014
Authors: Shan Ling Han, Zhi Yong Li, Ru Xing Yu, Jin Bin Li
Simulation Research on Aerodynamic Characteristics of Vehicle under Steady Crosswind based on XFlow
Shanling Han1, a, Zhiyong Li1, b, Jinbin Li1,c , Ruxing Yu1, d
1 College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, P.R.China
aS.L.HAN@163.com, blzy5552270@163.com, c2008zibolijinbin@163.com, dyrxheroo@163.com,
Keywords: Steady crosswind, Aerodynamic characteristics, XFlow, Simulation
Abstract.
E.Guilmineau et al have used CFD software with the relative motion theory to simulate the yawing motion and gained how the surface pressure coefficient changed[3].
By direct calculation of the fluid density and velocity, the influence of statistical noise on the simulation results is eliminated.
The Xflow software is a new generation CFD software which developed by Next Limit cooperation, using patented, particle-based, non-matching method that can easily handle the traditional complex problems.
Xflow overcomes many drawbacks of the traditional CFD method, it adopts the dynamics solver of LBM[6], which is characterized by modern large-eddy simulation model (LES) modeling capabilities and is equipped with advanced non-equilibrium isolated model.
E.Guilmineau et al have used CFD software with the relative motion theory to simulate the yawing motion and gained how the surface pressure coefficient changed[3].
By direct calculation of the fluid density and velocity, the influence of statistical noise on the simulation results is eliminated.
The Xflow software is a new generation CFD software which developed by Next Limit cooperation, using patented, particle-based, non-matching method that can easily handle the traditional complex problems.
Xflow overcomes many drawbacks of the traditional CFD method, it adopts the dynamics solver of LBM[6], which is characterized by modern large-eddy simulation model (LES) modeling capabilities and is equipped with advanced non-equilibrium isolated model.
Online since: June 2011
Authors: Geng Chen Shi, Shao Chun Sun
Numerical Simulations
In order to verify the prediction formulas and get an accurate performance data of the turbine machine, commercial CFD (Computational Fluid Dynamics) software is used with FEA (Finite Element Analysis).
Based on the simulations with CFD software, accurate driving torque and driving power are got.
Buffard: Axial-Flow Microturbine with Electromagnetic Generator: Design, CFD Simulation, and Prototype Demonstration. 17th IEEE International Conference on Micro Electro Mechanical Systems, (2004), p. 568
Dhariwal: Experimental and Simulation Analysis of Microturbines.
Dhariwal: Modelling and Simulation of A Fluid-Driven Microturbine.
Based on the simulations with CFD software, accurate driving torque and driving power are got.
Buffard: Axial-Flow Microturbine with Electromagnetic Generator: Design, CFD Simulation, and Prototype Demonstration. 17th IEEE International Conference on Micro Electro Mechanical Systems, (2004), p. 568
Dhariwal: Experimental and Simulation Analysis of Microturbines.
Dhariwal: Modelling and Simulation of A Fluid-Driven Microturbine.
Online since: January 2019
Authors: Yuan Cheng Sun, Xue Fu Song, Xiao Qiang Zhang, Xiu Rong Du, Ning Hua
The temperature and flow field were calculated by CFD method and motion of particles with different diameter (100 μm, 10 μm, 0.1 μm and 0.01 μm) in rf plasma deposition process were studied.
The objective of the present study is to investigate movement of particles with different diameter in rf plasma deposition process by CFD calculation method, in order to understand the deposition behavior of particles and give reference to improve the deposition process.
(3) Computational Grid The CFD software package FLUENT 6.3.26 was used for calculation. 3-D simulation model was established according to the physical model.
(4) Simulation Conditions and Boundary Conditions The input parameters were chosen as typical conditions as shown in Table 1.
Table 1 Simulation conditions Content Inlet Angle(◦) Inlet Velocity (m/s) Inlet Temperature(K) Plasma torch 30 4.34 1800 Feeding pipe 67 1.5 300 The plasma pipe and feeding pipe inlet were set as mass flow inlet boundary condition.
The objective of the present study is to investigate movement of particles with different diameter in rf plasma deposition process by CFD calculation method, in order to understand the deposition behavior of particles and give reference to improve the deposition process.
(3) Computational Grid The CFD software package FLUENT 6.3.26 was used for calculation. 3-D simulation model was established according to the physical model.
(4) Simulation Conditions and Boundary Conditions The input parameters were chosen as typical conditions as shown in Table 1.
Table 1 Simulation conditions Content Inlet Angle(◦) Inlet Velocity (m/s) Inlet Temperature(K) Plasma torch 30 4.34 1800 Feeding pipe 67 1.5 300 The plasma pipe and feeding pipe inlet were set as mass flow inlet boundary condition.
Online since: February 2013
Authors: Zheng Lan Yuan, Yu Zhang, Zhen Hua Xie
Numerical Simulations and Analysis
Distribution Law of Blasting Fume.
In this simulation, arranges a distance of 5 meters.
This paper performs the simulation of CO diffusion process in blind roadway in Shachang mining area of Shou Yun iron mine, getting the actual completion time required to meet the safety standard by the application of CFD software Fluent.
The simulation results are in line with the theory and engineering practice.
CFD Simulation Study on Jet Ventilation Flow Field in Heading Face [J].
In this simulation, arranges a distance of 5 meters.
This paper performs the simulation of CO diffusion process in blind roadway in Shachang mining area of Shou Yun iron mine, getting the actual completion time required to meet the safety standard by the application of CFD software Fluent.
The simulation results are in line with the theory and engineering practice.
CFD Simulation Study on Jet Ventilation Flow Field in Heading Face [J].
Online since: May 2015
Authors: Panagiotis Kyratsis, Athanasios Manavis
Different researchers have developed a variety of simulation methodologies.
Drilling Simulations CAD based simulation has been applied in a number of different applications.
The effect of the friction development was investigated with FE simulations as well.
Zhang et al. [6] presented a CAD/CFD method in order to optimize the design parameters of the chip removal structure in deep-hole drilling.
Li, Optimisation design of chip removal structure in the deep-hole drilling based on CAD/CFD, 4th International Seminar on Modern Cutting and Measurement Engineering.
Drilling Simulations CAD based simulation has been applied in a number of different applications.
The effect of the friction development was investigated with FE simulations as well.
Zhang et al. [6] presented a CAD/CFD method in order to optimize the design parameters of the chip removal structure in deep-hole drilling.
Li, Optimisation design of chip removal structure in the deep-hole drilling based on CAD/CFD, 4th International Seminar on Modern Cutting and Measurement Engineering.
Online since: July 2014
Authors: P. Karthikeyan, M. Muthukumar, B. Kavin, A. Kavyaraj, V. Lakshminarayanan, A.P. Senthil Kumar
The model was created and simulated under various pressures and temperature with a constant mass flow rate by using fluent CFD and the influence of the single pass flow channel on the performance of PEM fuel cell has been investigated.
Generally the trend is going to do the analysis of PEM fuel cell with various flow field designs and their influence using Computational Fluid Dynamics (CFD) [6].
The second step involved, creating the mesh from the geometry using ICEM CFD 14.0 (a module of Ansys 14.0).
In order to solve the myriad of equations associated with a fuel cell simulation, the entire cell was divided into a finite number of discrete volume elements or computational cells.
The simulation has been solved simultaneous equations like conservation of mass, momentum, energy, species, Butler–Volmer equation, Joule heating reaction and the Nernst equation to obtain reaction kinetics of PEM fuel cell, namely mass fraction of H2, O2, and H2O, temperature, static pressure and current flux density distribution on flow channel.
Generally the trend is going to do the analysis of PEM fuel cell with various flow field designs and their influence using Computational Fluid Dynamics (CFD) [6].
The second step involved, creating the mesh from the geometry using ICEM CFD 14.0 (a module of Ansys 14.0).
In order to solve the myriad of equations associated with a fuel cell simulation, the entire cell was divided into a finite number of discrete volume elements or computational cells.
The simulation has been solved simultaneous equations like conservation of mass, momentum, energy, species, Butler–Volmer equation, Joule heating reaction and the Nernst equation to obtain reaction kinetics of PEM fuel cell, namely mass fraction of H2, O2, and H2O, temperature, static pressure and current flux density distribution on flow channel.
Online since: January 2013
Authors: Jin Jin Tian, Yong Gang Guo, Zhe Zhang
CFD Simulation on Flow distribution in plate-fin heat exchangers
Zhe Zhanga, Jinjin Tian and Yonggang Guo
Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, China 300134
axjtuzz@163.com
Keywords: Plate-fin heat exchanger, flow distribution, header configuration
Abstract: The influences of the conventional header configuration used in industry at present on the fluid flow distribution in plate-fin heat exchanger were numerically investigated.
Study of the flow maldistribution in a plate-fin heat exchanger CFD models A schematic view of conventional header is shown in Fig. 1, which has the geometrical characteristics listed as follows.
inlet tube header distributor Fig.1 Schematic drawing of the plate-fin heat exchanger (mm) In this work, CFD software FLUENT was employed to simulate the fluid flow distribution in the header of plate-fin heat exchanger.
It can be found from the above contrast that the tendency of the numerical simulation results and experimental results are the same and the error is little.
Study of the flow maldistribution in a plate-fin heat exchanger CFD models A schematic view of conventional header is shown in Fig. 1, which has the geometrical characteristics listed as follows.
inlet tube header distributor Fig.1 Schematic drawing of the plate-fin heat exchanger (mm) In this work, CFD software FLUENT was employed to simulate the fluid flow distribution in the header of plate-fin heat exchanger.
It can be found from the above contrast that the tendency of the numerical simulation results and experimental results are the same and the error is little.
Online since: May 2011
Authors: Jia Bo He, Xian Qiang Zhao, Guo Xing Tang, Bai Qing Zhang
Clay materials extrusion process resulting field simulation and analysis
Baiqing Zhang a, Xianqiang Zhao b, Jiabo He c and Guoxing Tang d
The Electromechanical College of Jingdezhen Ceramic Institute, China
azbqxjq168@sina.com, bzxq8188@163.com, cwo19970701@163.com, dguoxingtang68@126.com
Keywords: de-airing pug mill, numerical simulation, ceramic paste
Abstract.
Numerical simulation by CFD to analyze the mechanism of mud out of mud extrusion process of the velocity field in the simulation, the influence of the quality of the clay mud section the nature of materials were studied.
In this paper, using CFD simulation technology [3, 4, 5], simulate the flow field of the mud in the extrusion process in de-airing pug mill, calculate the three-dimensional laminar flow field within a continuous spiral vane based on FLUENT, be focus on discussing the speed change of the different soil moisture content of pug in spiral reamer flow field in de-airing pug mill.
Numerical simulation results and analysis The simulation we use the large-scale flow calculation software Fluent to discuss the results of simulation analysis for the mud in the post-processing in a continuous spiral vane three-dimensional flow field.
This simulation did not consider the effect of temperature.
Numerical simulation by CFD to analyze the mechanism of mud out of mud extrusion process of the velocity field in the simulation, the influence of the quality of the clay mud section the nature of materials were studied.
In this paper, using CFD simulation technology [3, 4, 5], simulate the flow field of the mud in the extrusion process in de-airing pug mill, calculate the three-dimensional laminar flow field within a continuous spiral vane based on FLUENT, be focus on discussing the speed change of the different soil moisture content of pug in spiral reamer flow field in de-airing pug mill.
Numerical simulation results and analysis The simulation we use the large-scale flow calculation software Fluent to discuss the results of simulation analysis for the mud in the post-processing in a continuous spiral vane three-dimensional flow field.
This simulation did not consider the effect of temperature.
Online since: August 2014
Authors: Yun Fei Zhao, Xu Liu, Wei Liu
Dynamics Characterization of Missiles with Control Flaps Based on CFD
Liu Xua, Liu Weib and Zhao Yunfeic
College of Areospace Science and Engineering, National University of Defense Technology, Changsha, China
anudt@sina.cn, bfishfather6525@sina.com, czhaoyf08@126.com
Keywords: CFD; Damping-in-pitch derivative; Damping-in-roll derivative; Forced-harmonic analysis
Abstract.
Numerical simulation and physical characteristics analysis for slender wing rock [J].
NND schemes and their applications to numerical simulation of two-and three-dimensional flows [J].
CFD Computation of Magnus Moment and Roll Damping Moment of a Spinning Projectile.
CFD predictions of dynamic derivatives for missiles [C]. 40th AIAA Aerospace Sciences Meeting, 2002
Numerical simulation and physical characteristics analysis for slender wing rock [J].
NND schemes and their applications to numerical simulation of two-and three-dimensional flows [J].
CFD Computation of Magnus Moment and Roll Damping Moment of a Spinning Projectile.
CFD predictions of dynamic derivatives for missiles [C]. 40th AIAA Aerospace Sciences Meeting, 2002
Online since: March 2008
Authors: Jia Wu He, Shi Ning Ma, C.Q. Li, X.M. Wang, X.Q. Feng
Design of ultrasonic ejecting gun used for surface nanocrystallization
based on CFD
X.M.Wang
1, a
, S.N.Ma1, b , C.Q.Li
1,c
, J.W.He
1, d
and X.Q.
Feng 1, e 1 National Key Laboratory for Remanufacturing, The Academy of Armored Forces Engineering, Beijing, China 100072 a wxm19781217@126.com, b mashining@263.net, cLi_chq@sohu.com Keywords: Surface Nanocrystallization; Ultrasonic ejecting gun; Number simulation Abstract.
The gun with excellent features is premise to obtain the nano-structured layer.This paper analysed the advantages of rectangle Laval nozzle compared to annular-shape one and calculated critical structured parameters of the nozzle.Numerical simulation analysis of flow field of the nozzle at inlet temperature 300K and inlet pressure 0.25 MP, 1.0 MP, 1.7 MP and 2.5MP and velocity field of the gun with divergent-angle extended-barrel conduced by a commercial finite volume code FLUENT software of CFD; Consequently, the overall structure of the gun was optimized and determined finally.
Feng 1, e 1 National Key Laboratory for Remanufacturing, The Academy of Armored Forces Engineering, Beijing, China 100072 a wxm19781217@126.com, b mashining@263.net, cLi_chq@sohu.com Keywords: Surface Nanocrystallization; Ultrasonic ejecting gun; Number simulation Abstract.
The gun with excellent features is premise to obtain the nano-structured layer.This paper analysed the advantages of rectangle Laval nozzle compared to annular-shape one and calculated critical structured parameters of the nozzle.Numerical simulation analysis of flow field of the nozzle at inlet temperature 300K and inlet pressure 0.25 MP, 1.0 MP, 1.7 MP and 2.5MP and velocity field of the gun with divergent-angle extended-barrel conduced by a commercial finite volume code FLUENT software of CFD; Consequently, the overall structure of the gun was optimized and determined finally.