Numerical investigation of transitional supersonic base flows with flow control

Jayahar Sivasubramanian, Richard D. Sandberg, Dominie A. Von Terzi, Hermann F Fasel

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Drag reduction by means of flow control is investigated for supersonic base flows at M = 2.46 using direct numerical simulations and the flow simulation methodology. The objective of the present work is to understand the evolution of coherent structures in the flow and how flow control techniques can modify these structures. For such investigations, simulation methods that capture the dynamics of the large turbulent structures are required. Direct numerical simulations are performed for transitional base flows at ReD = 30,000. Because of the drastically increased computational cost of direct numerical simulations at higher Reynolds numbers, a hybrid methodology (flow simulation methodology) is applied to simulate base flows with flow control at ReD = 100,000. Active and passive flow control techniques that alter the near wake by introducing axisymmetric and longitudinal perturbations are investigated. A detailed analysis of the dynamics of the resulting turbulent structures is presented.

Original languageEnglish (US)
Pages (from-to)1021-1028
Number of pages8
JournalJournal of Spacecraft and Rockets
Volume44
Issue number5
DOIs
StatePublished - Sep 2007

Fingerprint

base flow
flow control
baseflow
Flow control
Direct numerical simulation
Flow simulation
simulation
direct numerical simulation
methodology
Drag reduction
capture method
Reynolds number
near wakes
drag reduction
high Reynolds number
drag
perturbation
Costs
costs
cost

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Numerical investigation of transitional supersonic base flows with flow control. / Sivasubramanian, Jayahar; Sandberg, Richard D.; Von Terzi, Dominie A.; Fasel, Hermann F.

In: Journal of Spacecraft and Rockets, Vol. 44, No. 5, 09.2007, p. 1021-1028.

Research output: Contribution to journalArticle

Sivasubramanian, Jayahar ; Sandberg, Richard D. ; Von Terzi, Dominie A. ; Fasel, Hermann F. / Numerical investigation of transitional supersonic base flows with flow control. In: Journal of Spacecraft and Rockets. 2007 ; Vol. 44, No. 5. pp. 1021-1028.
@article{694f18e3e3644bb9ad2947385223ca8f,
title = "Numerical investigation of transitional supersonic base flows with flow control",
abstract = "Drag reduction by means of flow control is investigated for supersonic base flows at M = 2.46 using direct numerical simulations and the flow simulation methodology. The objective of the present work is to understand the evolution of coherent structures in the flow and how flow control techniques can modify these structures. For such investigations, simulation methods that capture the dynamics of the large turbulent structures are required. Direct numerical simulations are performed for transitional base flows at ReD = 30,000. Because of the drastically increased computational cost of direct numerical simulations at higher Reynolds numbers, a hybrid methodology (flow simulation methodology) is applied to simulate base flows with flow control at ReD = 100,000. Active and passive flow control techniques that alter the near wake by introducing axisymmetric and longitudinal perturbations are investigated. A detailed analysis of the dynamics of the resulting turbulent structures is presented.",
author = "Jayahar Sivasubramanian and Sandberg, {Richard D.} and {Von Terzi}, {Dominie A.} and Fasel, {Hermann F}",
year = "2007",
month = "9",
doi = "10.2514/1.28673",
language = "English (US)",
volume = "44",
pages = "1021--1028",
journal = "Journal of Spacecraft and Rockets",
issn = "0022-4650",
publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",
number = "5",

}

TY - JOUR

T1 - Numerical investigation of transitional supersonic base flows with flow control

AU - Sivasubramanian, Jayahar

AU - Sandberg, Richard D.

AU - Von Terzi, Dominie A.

AU - Fasel, Hermann F

PY - 2007/9

Y1 - 2007/9

N2 - Drag reduction by means of flow control is investigated for supersonic base flows at M = 2.46 using direct numerical simulations and the flow simulation methodology. The objective of the present work is to understand the evolution of coherent structures in the flow and how flow control techniques can modify these structures. For such investigations, simulation methods that capture the dynamics of the large turbulent structures are required. Direct numerical simulations are performed for transitional base flows at ReD = 30,000. Because of the drastically increased computational cost of direct numerical simulations at higher Reynolds numbers, a hybrid methodology (flow simulation methodology) is applied to simulate base flows with flow control at ReD = 100,000. Active and passive flow control techniques that alter the near wake by introducing axisymmetric and longitudinal perturbations are investigated. A detailed analysis of the dynamics of the resulting turbulent structures is presented.

AB - Drag reduction by means of flow control is investigated for supersonic base flows at M = 2.46 using direct numerical simulations and the flow simulation methodology. The objective of the present work is to understand the evolution of coherent structures in the flow and how flow control techniques can modify these structures. For such investigations, simulation methods that capture the dynamics of the large turbulent structures are required. Direct numerical simulations are performed for transitional base flows at ReD = 30,000. Because of the drastically increased computational cost of direct numerical simulations at higher Reynolds numbers, a hybrid methodology (flow simulation methodology) is applied to simulate base flows with flow control at ReD = 100,000. Active and passive flow control techniques that alter the near wake by introducing axisymmetric and longitudinal perturbations are investigated. A detailed analysis of the dynamics of the resulting turbulent structures is presented.

UR - http://www.scopus.com/inward/record.url?scp=36148999434&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36148999434&partnerID=8YFLogxK

U2 - 10.2514/1.28673

DO - 10.2514/1.28673

M3 - Article

AN - SCOPUS:36148999434

VL - 44

SP - 1021

EP - 1028

JO - Journal of Spacecraft and Rockets

JF - Journal of Spacecraft and Rockets

SN - 0022-4650

IS - 5

ER -