A UDF-Based Approach for the Dynamic Stall Evaluation of Airfoils for Micro-Air Vehicles

被引：0
|
作者：
Sterpu, Diana-Andreea [1 ]
Mariuta, Daniel [2 ]
Grigorie, Lucian-Teodor [1 ]
机构：
[1] POLITEHN Natl Univ Sci & Technol Bucharest, Fac Aerosp Engn, Bucharest 060042, Romania
[2] Mil Tech Acad Ferdinand I Bucharest, Dept Aircraft Integrated Syst & Aviat, Bucharest 050141, Romania
来源：
BIOMIMETICS | 2024年 / 9卷 / 06期
关键词：
aerodynamics; hysteresis; NACA; 0012; DES;
D O I：
10.3390/biomimetics9060339
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A numerical method for generating dynamic stall using ANSYS Fluent and a user-defined function (UDF), with the complete script shared for reference, is introduced and tested. The study draws inspiration from bird flight, exploring dynamic stall as a method for achieving enhanced aerodynamic performance. The numerical method was tested on NACA 0012 airfoils with corresponding chord lengths of c1=40 mm, c2=150 mm, and c3=300 mm at Reynolds numbers ranging from Re1=2.8x104 up to Re5=1.04x106. Airfoil oscillations were settled for all cases at omega=0.55 Hz. Detached eddy simulation (DES) is employed as the turbulence model for the simulations presented, ensuring the accurate representation of the flow characteristics and dynamic stall phenomena. The study provides a detailed methodology, encouraging further exploration by researchers, especially young academics and students.
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页数：13
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