Numerical evolution of elliptical 3-D vortex arrays in inviscid fluid

Xiong John He; Jacques Lewalle; Jackson Herring

Numerical evolution of elliptical 3-D vortex arrays in inviscid fluid

Xiong John He, Jacques Lewalle, Jackson Herring

Department of Mechanical & Aerospace Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

A numerical evolution of vortex arrays in an inviscid fluid was performed by the Galerkin-Fourier spectral method. The initial flows include Dcissler vortex and Taylor-Green vortex. The initial length scales along different directions are equal (circular) and unequal (elliptical), and the results are compared. The Deissler vortex flows have much stronger vortex interaction than the T-G vortex flows. The elliptization enhances the nonlinear interactions obviously in the doughnut T-G flow, but the enhancement is weak in the plane T-G flow and the Dcissler flow. The results support the concept that a main source of turbulence is the nonlinear interaction between neighboring vortex segments oriented differently.

Original language	English (US)
State	Published - 1991
Event	AIAA 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1991 - Honolulu, United States Duration: Jun 24 1991 → Jun 26 1991

Other

Other	AIAA 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1991
Country/Territory	United States
City	Honolulu
Period	6/24/91 → 6/26/91

ASJC Scopus subject areas

Engineering (miscellaneous)
Aerospace Engineering
Electrical and Electronic Engineering
Condensed Matter Physics

Cite this

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title = "Numerical evolution of elliptical 3-D vortex arrays in inviscid fluid",

abstract = "A numerical evolution of vortex arrays in an inviscid fluid was performed by the Galerkin-Fourier spectral method. The initial flows include Dcissler vortex and Taylor-Green vortex. The initial length scales along different directions are equal (circular) and unequal (elliptical), and the results are compared. The Deissler vortex flows have much stronger vortex interaction than the T-G vortex flows. The elliptization enhances the nonlinear interactions obviously in the doughnut T-G flow, but the enhancement is weak in the plane T-G flow and the Dcissler flow. The results support the concept that a main source of turbulence is the nonlinear interaction between neighboring vortex segments oriented differently.",

author = "He, {Xiong John} and Jacques Lewalle and Jackson Herring",

note = "Publisher Copyright: {\textcopyright} 1991, American Institute of Aeronautics and Astronautics, Inc. All rights reserved.; AIAA 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1991 ; Conference date: 24-06-1991 Through 26-06-1991",

year = "1991",

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TY - CONF

T1 - Numerical evolution of elliptical 3-D vortex arrays in inviscid fluid

AU - He, Xiong John

AU - Lewalle, Jacques

AU - Herring, Jackson

PY - 1991

Y1 - 1991

N2 - A numerical evolution of vortex arrays in an inviscid fluid was performed by the Galerkin-Fourier spectral method. The initial flows include Dcissler vortex and Taylor-Green vortex. The initial length scales along different directions are equal (circular) and unequal (elliptical), and the results are compared. The Deissler vortex flows have much stronger vortex interaction than the T-G vortex flows. The elliptization enhances the nonlinear interactions obviously in the doughnut T-G flow, but the enhancement is weak in the plane T-G flow and the Dcissler flow. The results support the concept that a main source of turbulence is the nonlinear interaction between neighboring vortex segments oriented differently.

AB - A numerical evolution of vortex arrays in an inviscid fluid was performed by the Galerkin-Fourier spectral method. The initial flows include Dcissler vortex and Taylor-Green vortex. The initial length scales along different directions are equal (circular) and unequal (elliptical), and the results are compared. The Deissler vortex flows have much stronger vortex interaction than the T-G vortex flows. The elliptization enhances the nonlinear interactions obviously in the doughnut T-G flow, but the enhancement is weak in the plane T-G flow and the Dcissler flow. The results support the concept that a main source of turbulence is the nonlinear interaction between neighboring vortex segments oriented differently.

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M3 - Paper

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T2 - AIAA 22nd Fluid Dynamics, Plasma Dynamics and Lasers Conference, 1991

Y2 - 24 June 1991 through 26 June 1991

ER -

Numerical evolution of elliptical 3-D vortex arrays in inviscid fluid

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