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

Autor: Diana-Andreea Sterpu, Daniel Măriuța, Lucian-Teodor Grigorie
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Biomimetics, Vol 9, Iss 6, p 339 (2024)
Druh dokumentu: article
ISSN: 2313-7673
DOI: 10.3390/biomimetics9060339
Popis: 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=2.8×104 up to Re5=1.04×106. Airfoil oscillations were settled for all cases at ω=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.
Databáze: Directory of Open Access Journals
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