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Online since: May 2014
Authors: Rahman T. Nakkas, Masud Behnia, Babak Fakhim, Ashkan Javadzadegan
Bernad et al [6] has studied the feasibility of using Computational Fluid Dynamics (CFD) to simulate pulsatile blood flow in-vivo in coronary arteries of patients.
However, the main outcome of this study was that it clearly showed that the analysis of transient/pulsatile blood flow using CFD software is indeed feasible in-vivo in realistic coronary artery models, since CFD allows the relevant flow parameters to be characterised with acceptable accuracy.
ANSYS CFX (v14.0, ANSYS-Fluent Inc., Lebanon, NH, USA), a finite volume based software, was coupled to ANSYS Structural (v14.0, ANSYS-Fluent Inc., Lebanon, NH, USA), a finite element based software, for the numerical simulation of the fluid structure interaction (FSI) between the solid (wall) and the fluid (lumen) domains.
Hoffman, Numerical simulations of blood flow in arteries using fluid structure interactions, PhD dissertation, Graduate School of Witchita State University, 2007.
Online since: June 2013
Authors: Lin Qiu, Min Yan, Jin Yang, Run Ping Niu
Simulation Research of Angle Action on Fold-type Board in Air-Heating Collector Lin Qiu1, a, Runping Niu1, b, Min Yan1, c,Jin Yang1, d 1Beijing University of Civil Engineering and Architecture, Beijing, China aqiulin@bucea.edu.cn, bniurunping@bucea.edu.cn, c yanmin @bucea.edu.cn, dyangjin@bucea.edu.cn Keywords: numerical simulation, collector; fold-type board, angle Abstract.
Numerical simulation of the thermal properties of fold-type collector on different angle with Fluent software.
Numeric simulation calculations shown: the fold-type board collector angle action has a greater influence for the thermal properties of collector in air-heating ,the thermal efficiency when is 30°is better than is 45°and is 60°and under this work simulation condition the optimum angle for folded-type panel air collector will be recommend nearby at =30°.
From the simulation results, the different angle plate temperature distribution and velocity distribution of folded-type air collector under the same conditions shown in Fig.3 and Fig.4.
A CFD heat transfer analysis of the transpired solar collector under no-wind conditions.
Online since: August 2013
Authors: Da Zheng Wang, Jun Wei Zhou
Simulation of Tidal Stream Turbine Working Near Free Surface Junwei Zhoua and Dazheng Wang School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology in Weihai, Weihai 264209, China azhou_junwei@foxmail.com Keywords: tidal stream turbine, free surface, immersion depth, wave Abstract.
Turbine simulation with wave Numerial method.
The CFD method was validated by Myers’s experimental result.
The wave shape was compared with turbines of the same scale, immersion depth, inflow velocity and thrust coefficient, while the water region of the CFD is deeper and wider.
Since the simulation based on a similar geometry, the difference of the two conditions is not caused by parameter of D.
Online since: May 2012
Authors: Yi Wen Chen, Qian Liu, Wei Lin, Wen Hao Yang, Jing Zhu, Li Jun Liu, Si Hao Nie, JiuYang Yu
The mechanism of heat transfer enhancement of pulsating flow in a spiral fluted tube was researched by CFD (computational fluid dynamics) software FLUENT.
In the present paper, a number of pulsating flow with different frequencies and amplitudes in a three-dimensional spiral fluted tube were investigated by CFD software FLUENT.
Model and Boundary Conditions Because of the asymmetric structure of spiral fluted tube, in numerical simulation, we use three-dimensional modeling of it.
Results from the numerical simulation indicate that, comparing with the steady flow, the pulsating flow increases the heat transfer efficiency of the spiral fluted tube in laminar flow by 60%.
Online since: October 2013
Authors: Cheng Chu Yue Fu, Li Li Liu, Shu Ren Yang
Numerical simulation of multi-cup isoflux gas anchor Physical model creating.
The purpose is to mesh to accurate simulation.
Outputs of numerical simulation Extract useful data for thesis.
[3] P.chow,M.Cross,K.Pericleous.A natural extension of the conventional finite volume method into polygonal unstructured meshes for CFD application[J].App Math Modelling.1996 (20):170-183
[4] L.Suarez,F.Kenyery,M.Asuaje.3D CFD Simulation of Rotary Gas-Separator Performance Under Two-Phase-Flow Condition[C].SPE 94959,2005.
Online since: February 2014
Authors: Xiang Ming Zheng
Results of simulation and flight test show that our design on aerial robot is effective.
In this paper, we introduce CFD (Computational Fluid Dynamics) method to analyze the aerodynamic performance of the aerial robot.
In the process of simulation, the Gauss normal distribution noise model is used.
Results of Simulation and flight test show that our design on aerial robot is effective.
Tramel2, and Jennie Barber3, Modeling Propeller Flow-Fields Using CFD, Digital Fusion Solutions, Inc., Huntsville, AL 35805, AIAA 2008-402 [6] Greg Welch and Gray Bishop.
Online since: January 2016
Authors: Jiří Holman
This work deals with the numerical simulation of unsteady compressible turbulent flow past a circular cylinder.
X-LES model The X-LES X-LES - eXtra-Large Eddy Simulation.
The X-LES model is clearly the most suitable option from presented models for the simulation of unsteady turbulent flows.
Wilcox: Turbulence Modeling for CFD, DCW Industries, Inc.
Wallin: Engineering turbulence modeling for CFD with focus on explicit algebraic Reynoldes stress models, dissertation thesis, Royal Institute of Technology, 2000
Online since: February 2014
Authors: Yi Xiang Hu, Shun Ming Li, Qing Liu
Through the CFD analysis, the temperature characteristics of the different element can be obtained, which can more accurately determine the fluid properties, and accurately analyze the muffler acoustic performance.
A commercial CFD package, Fluent 6.3 was used.
Fig.1 shows the results of the CFD analysis of expanded-muffler.
Base on the result of CFD, the temperature of nodes in FEM model was exported, and then the average temperature of the nodes which consists of an element was subjected to the element.
Based on temperature gradient model, the boundary conditions of flow velocity which is obtained in fluid simulation are imposed on temperature gradient model in SYSNOISE [6].
Online since: July 2013
Authors: Seppo Louhenkilpi, Shan Yu, Jyrki Miettinen
., computational fluid dynamics (CFD), has been receiving much more attention recently with the rapid development of computer technologies.
The CFD model, which is based on the Euler-Euler approach, was employed to simulate the multiphase (gas-steel-slag) flow in non-isothermal system.
The authors [7] of the present paper simulated the process of dehydrogenation in vacuum tank degasser by applying an integrated CFD model.
The calculations are accomplished by ANSYS FLUENT 14.0 augmented with user defined functions (UDF) [9] and the simulations are validated with measurements from the plant.
In this study, 250 kg lime is added in ladle furnace before VD and 2 wt% [11] hydrogen of the total hydrogen in Ca(OH)2 is assumed as the hydrogen source in the simulation.
Online since: September 2013
Authors: Xiao Ping Ma, Yu Li Zhang
The plume model used in this paper was simulated using a computation fluid dynamic (CFD) software package, FLUENT (Fluent, Inc.).
CFD is used to generate the flow.
Compared with the static plume model, the simulated plume in CFD is more precise because the airflow velocity and odor concentrations are estimated throughout the space of interest [7].
Simulation experiments are carried out, and the comparative result is illustrated.
Lu, “A simulation framework for plume-tracing research,” Proceedings of ACRA.
Showing 2821 to 2830 of 5269 items