Numerical study of resonant interactions and flow control in a canonical separated flow

Rajat Mittal; Rupesh B. Kotapati; Louis N. Cattafesta

doi:10.2514/6.2005-1261

Numerical study of resonant interactions and flow control in a canonical separated flow

Rajat Mittal, Rupesh B. Kotapati, Louis N. Cattafesta

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

Abstract

A novel numerical configuration has been devised in order to investigate active control of separated airfoil flows in a comprehensive and systematic manner. The configuration consists of a flat plate at zero degrees angle-of-attack in a freestream on which a separation bubble of prescribed size is created at a prescribed location through blowing and suction on the top boundary of the computational domain. Numerical simulations of this configuration show that these canonical separated airfoil flows exhibit three distinct characteristic time scales corresponding to the shear layer, the separation zone and the wake vortex shedding. The vortex dynamics associated with these distinct phenomena are described. Preliminary simulations of this flow subjected to zero-net-mass-flux perturbation are also presented.

Original language	English (US)
Pages	10763-10774
Number of pages	12
DOIs	https://doi.org/10.2514/6.2005-1261
State	Published - 2005
Externally published	Yes
Event	43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 10 2005 → Jan 13 2005

Other

Other	43rd AIAA Aerospace Sciences Meeting and Exhibit
Country/Territory	United States
City	Reno, NV
Period	1/10/05 → 1/13/05

ASJC Scopus subject areas

General Engineering

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10.2514/6.2005-1261

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title = "Numerical study of resonant interactions and flow control in a canonical separated flow",

abstract = "A novel numerical configuration has been devised in order to investigate active control of separated airfoil flows in a comprehensive and systematic manner. The configuration consists of a flat plate at zero degrees angle-of-attack in a freestream on which a separation bubble of prescribed size is created at a prescribed location through blowing and suction on the top boundary of the computational domain. Numerical simulations of this configuration show that these canonical separated airfoil flows exhibit three distinct characteristic time scales corresponding to the shear layer, the separation zone and the wake vortex shedding. The vortex dynamics associated with these distinct phenomena are described. Preliminary simulations of this flow subjected to zero-net-mass-flux perturbation are also presented.",

author = "Rajat Mittal and Kotapati, {Rupesh B.} and Cattafesta, {Louis N.}",

year = "2005",

doi = "10.2514/6.2005-1261",

language = "English (US)",

pages = "10763--10774",

note = "43rd AIAA Aerospace Sciences Meeting and Exhibit ; Conference date: 10-01-2005 Through 13-01-2005",

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T1 - Numerical study of resonant interactions and flow control in a canonical separated flow

AU - Mittal, Rajat

AU - Kotapati, Rupesh B.

AU - Cattafesta, Louis N.

PY - 2005

Y1 - 2005

N2 - A novel numerical configuration has been devised in order to investigate active control of separated airfoil flows in a comprehensive and systematic manner. The configuration consists of a flat plate at zero degrees angle-of-attack in a freestream on which a separation bubble of prescribed size is created at a prescribed location through blowing and suction on the top boundary of the computational domain. Numerical simulations of this configuration show that these canonical separated airfoil flows exhibit three distinct characteristic time scales corresponding to the shear layer, the separation zone and the wake vortex shedding. The vortex dynamics associated with these distinct phenomena are described. Preliminary simulations of this flow subjected to zero-net-mass-flux perturbation are also presented.

AB - A novel numerical configuration has been devised in order to investigate active control of separated airfoil flows in a comprehensive and systematic manner. The configuration consists of a flat plate at zero degrees angle-of-attack in a freestream on which a separation bubble of prescribed size is created at a prescribed location through blowing and suction on the top boundary of the computational domain. Numerical simulations of this configuration show that these canonical separated airfoil flows exhibit three distinct characteristic time scales corresponding to the shear layer, the separation zone and the wake vortex shedding. The vortex dynamics associated with these distinct phenomena are described. Preliminary simulations of this flow subjected to zero-net-mass-flux perturbation are also presented.

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DO - 10.2514/6.2005-1261

M3 - Paper

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EP - 10774

T2 - 43rd AIAA Aerospace Sciences Meeting and Exhibit

Y2 - 10 January 2005 through 13 January 2005

ER -

Numerical study of resonant interactions and flow control in a canonical separated flow

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