Numerical investigation of transitional supersonic base flows with flow control

Jayahar Sivasubramanian; Richard D. Sandberg; Dominic A. Von Terzi; Hermann F. Fasel

doi:10.2514/6.2006-479

Numerical investigation of transitional supersonic base flows with flow control

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

Aerospace and Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Drag reduction by means of flow control is investigated for supersonic base flows at Mach number M = 2.46 using Direct Numerical Simulations (DNS) and the Flow Simulation Methodology (FSM). The objective of the present work is to understand the evolution of coherent structures in the flow and how flow control techniques modify these structures. For such investigations, simulation methods that capture the dynamics of the large turbulent structures are required. For transitional base flows at Re_D = 30,000 DNS are performed. Due to the drastically increased computational cost of DNS at higher Reynolds numbers, a hybrid RANS/LES method (FSM) is applied to simulate base flows with flow control at Re_D = 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 (coherent) structures is presented.

Original language	English (US)
Title of host publication	Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Publisher	American Institute of Aeronautics and Astronautics Inc.
Pages	5685-5696
Number of pages	12
ISBN (Print)	1563478072, 9781563478079
DOIs	https://doi.org/10.2514/6.2006-479
State	Published - 2006
Event	44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States Duration: Jan 9 2006 → Jan 12 2006

Publication series

Name	Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Volume	8

Other

Other	44th AIAA Aerospace Sciences Meeting 2006
Country	United States
City	Reno, NV
Period	1/9/06 → 1/12/06

ASJC Scopus subject areas

Space and Planetary Science
Aerospace Engineering

Access to Document

10.2514/6.2006-479

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Sivasubramanian, J., Sandberg, R. D., Von Terzi, D. A., & Fasel, H. F. (2006). Numerical investigation of transitional supersonic base flows with flow control. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting (pp. 5685-5696). (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; Vol. 8). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2006-479

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

Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc., 2006. p. 5685-5696 (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; Vol. 8).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sivasubramanian, J, Sandberg, RD, Von Terzi, DA & Fasel, HF 2006, Numerical investigation of transitional supersonic base flows with flow control. in Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting, vol. 8, American Institute of Aeronautics and Astronautics Inc., pp. 5685-5696, 44th AIAA Aerospace Sciences Meeting 2006, Reno, NV, United States, 1/9/06. https://doi.org/10.2514/6.2006-479

Sivasubramanian J, Sandberg RD, Von Terzi DA, Fasel HF. Numerical investigation of transitional supersonic base flows with flow control. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc. 2006. p. 5685-5696. (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting). https://doi.org/10.2514/6.2006-479

Sivasubramanian, Jayahar ; Sandberg, Richard D. ; Von Terzi, Dominic A. ; Fasel, Hermann F. / Numerical investigation of transitional supersonic base flows with flow control. Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc., 2006. pp. 5685-5696 (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting).

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