Examination of the details of 2D vorticity generation around the airfoil during starting and stopping phases

Alwin R. Wang, Hugh M. Blackburn

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

This paper presents a numerical study of vorticity generation around a 2D airfoil during the starting and stopping phases of motion. The study focuses on a single NACA0012 airfoil of unit chord at 4° angle of attack where the two-dimensional Navier-Stokes equations are solved using a spectral element DNS code. Peaks in the boundary vorticity flux on the trailing edge surface support recent findings about the establishment of the Kutta condition. The peaks in lift force during the starting and stopping phases appear to be well-explained by thin airfoil theory for non-uniform motion while the peaks in the drag force appear well-explained by vortex impulse and added mass.

Original languageEnglish
Title of host publicationProceedings of the 21st Australasian Fluid Mechanics Conference
EditorsTimothy C.W. Lau, Richard M. Kelso
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9780646597843
Publication statusPublished - 2018
EventAustralasian Fluid Mechanics Conference 2018 - Adelaide Convention Centre, Adelaide, Australia
Duration: 10 Dec 201813 Dec 2018
Conference number: 21st
https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Conference

ConferenceAustralasian Fluid Mechanics Conference 2018
Abbreviated titleAFMC 2018
CountryAustralia
CityAdelaide
Period10/12/1813/12/18
Internet address

Cite this

Wang, A. R., & Blackburn, H. M. (2018). Examination of the details of 2D vorticity generation around the airfoil during starting and stopping phases. In T. C. W. Lau, & R. M. Kelso (Eds.), Proceedings of the 21st Australasian Fluid Mechanics Conference Australasian Fluid Mechanics Society.