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

Alwin R. Wang; Hugh M. Blackburn

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

Alwin R. Wang, Hugh M. Blackburn

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

1 Citation (Scopus)

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 language	English
Title of host publication	Proceedings of the 21st Australasian Fluid Mechanics Conference
Editors	Timothy C.W. Lau, Richard M. Kelso
Publisher	Australasian Fluid Mechanics Society
ISBN (Electronic)	9780646597843
Publication status	Published - 2018
Event	Australasian Fluid Mechanics Conference 2018 - Adelaide Convention Centre, Adelaide, Australia Duration: 10 Dec 2018 → 13 Dec 2018 Conference number: 21st http://www.afms.org.au/proceedings/21.html (Proceedings) https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Conference

Conference	Australasian Fluid Mechanics Conference 2018
Abbreviated title	AFMC 2018
Country/Territory	Australia
City	Adelaide
Period	10/12/18 → 13/12/18
Internet address	http://www.afms.org.au/proceedings/21.html (Proceedings) https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Cite this

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title = "Examination of the details of 2D vorticity generation around the airfoil during starting and stopping phases",

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.",

author = "Wang, {Alwin R.} and Blackburn, {Hugh M.}",

year = "2018",

language = "English",

editor = "Lau, {Timothy C.W.} and Kelso, {Richard M.}",

booktitle = "Proceedings of the 21st Australasian Fluid Mechanics Conference",

publisher = "Australasian Fluid Mechanics Society",

address = "Australia",

note = "Australasian Fluid Mechanics Conference 2018, AFMC 2018 ; Conference date: 10-12-2018 Through 13-12-2018",

url = "http://www.afms.org.au/proceedings/21.html, https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018",

}

Examination of the details of 2D vorticity generation around the airfoil during starting and stopping phases. / Wang, Alwin R.; Blackburn, Hugh M.
Proceedings of the 21st Australasian Fluid Mechanics Conference. ed. / Timothy C.W. Lau; Richard M. Kelso. Australasian Fluid Mechanics Society, 2018.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - Examination of the details of 2D vorticity generation around the airfoil during starting and stopping phases

AU - Wang, Alwin R.

AU - Blackburn, Hugh M.

N1 - Conference code: 21st

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

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M3 - Conference Paper

AN - SCOPUS:85084094867

BT - Proceedings of the 21st Australasian Fluid Mechanics Conference

A2 - Lau, Timothy C.W.

A2 - Kelso, Richard M.

PB - Australasian Fluid Mechanics Society

T2 - Australasian Fluid Mechanics Conference 2018

Y2 - 10 December 2018 through 13 December 2018

ER -

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

Abstract

Conference

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