Numerical Simulation of Low Reynolds Number Flows Based on CFD

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Abstract:

Low Reynolds number aerodynamics is important for various applications including high altitude unmanned vehicles, wind turbines and propellers. Few researches were concerned on this area. Low Reynolds number (60000,100000,300000,460000) flows around Eppler387 airfoil of different angles of attack (0°~12°) were simulated using Computational Fluid Dynamics (CFD). Transition shear-stress transport (SST) model which combined with the SST model and the model was demonstrated. Simulation results show good agreement with the experimental data. The model is able to predict the position of low Reynolds laminar separation bubbles and display the complex phenomenon of the flows, which can form the basis for solving boundary layer separation problem and designing of airfoil.

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73-78

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Michael S. Selig, James J. Guglielmo, Andy P. Broern and Philippe Giguere, Experiments on Airfoils at Low Reynolds Numbers, AIAA 96-00621996.

DOI: 10.2514/6.1996-62

Google Scholar

[2] Mueller T J, The Influence of Laminar Separation and Transition on Low Reynolds Number Hysteresis, Journal of Aircraft, vol. 22, No. 9, Sept. (1985).

DOI: 10.2514/3.45199

Google Scholar

[3] Horton H P, Laminar Separation Bubbles in Two and Three Dimensional Incompressible Flow, University of London, (1968).

Google Scholar

[4] Fluent Incorporated. Fluent(V13. 0)User's Guides [CP]. (2010).

Google Scholar

[5] Robert J. McGhee, Betty S. Walker and Betty F. Millard, Experiment Results for the Eppler387 Airfoil at Low Reynolds in the Langley Low-Turbulence Pressure Tunnel. NASA Technical Memorandum 4062. (1988).

Google Scholar

[6] Gregory M. Cole and Thomas J. Mueller, Experimental Measurements of the Laminar Separation Bubble on an Eppler387 Airfoil at Low Reynolds Numbers, UNDAS-1418-FR, Jan. (1990).

Google Scholar