High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake

D. A. Von Terzi, R. D. Sandberg, J. Sivasubramanian, Hermann F Fasel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Supersonic axisymmetric base flows are prototypical for flows behind projectiles and missiles, For these flows, drag reduction can be achieved by means of passive control of the near wake. Thereby, large (turbulent) coherent structures play a dominant role. The objective of the present investigation is to elucidate if and how successful passive flow control techniques modify these structures. To this end, first Direct Numerical Simulations (DNS) for a Reynolds number of ReD = 100,000 and Mach number of Ma =2.46 were performed using a high-order accurate and highly parallelized research code which was developed at the University of Arizona. Thereby, roughly 52 million grid points were employed. The DNS data serve to visualize typical structures of the unsteady flow field and to verify that the use of less computational costly RANS/LES methods is applicable for this flow. Two of these methods, the Flow Simulation Methodology (FSM) and Detached Eddy Simulations (DES), were then employed to investigate the supersonic base flow at ReD =3.3 × 106 and Ma = 2.46 using between 460,000 and seven million grid points. For the DES, the commercial CFD-code Cobalt was employed. This unstructured grid solver allowed then to perform simulations with boat-tailing. The obtained mean flow data are compared to available experimental results.

Original languageEnglish (US)
Title of host publicationDepartment of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005
Pages119-127
Number of pages9
Volume2005
DOIs
StatePublished - 2005
EventDepartment of Defense High Performance Computing Modernization Program: HPCMP Users Group Conference 2005 - Nashville, TN, United States
Duration: Jun 27 2005Jun 30 2005

Other

OtherDepartment of Defense High Performance Computing Modernization Program: HPCMP Users Group Conference 2005
CountryUnited States
CityNashville, TN
Period6/27/056/30/05

Fingerprint

Direct numerical simulation
Reynolds number
Drag reduction
Flow simulation
Tailings
Boats
Unsteady flow
Projectiles
Missiles
Flow control
Mach number
Cobalt
Flow fields
Computational fluid dynamics

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Von Terzi, D. A., Sandberg, R. D., Sivasubramanian, J., & Fasel, H. F. (2005). High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake. In Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005 (Vol. 2005, pp. 119-127). [1592132] https://doi.org/10.1109/DODUGC.2005.32

High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake. / Von Terzi, D. A.; Sandberg, R. D.; Sivasubramanian, J.; Fasel, Hermann F.

Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005. Vol. 2005 2005. p. 119-127 1592132.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Von Terzi, DA, Sandberg, RD, Sivasubramanian, J & Fasel, HF 2005, High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake. in Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005. vol. 2005, 1592132, pp. 119-127, Department of Defense High Performance Computing Modernization Program: HPCMP Users Group Conference 2005, Nashville, TN, United States, 6/27/05. https://doi.org/10.1109/DODUGC.2005.32
Von Terzi DA, Sandberg RD, Sivasubramanian J, Fasel HF. High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake. In Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005. Vol. 2005. 2005. p. 119-127. 1592132 https://doi.org/10.1109/DODUGC.2005.32
Von Terzi, D. A. ; Sandberg, R. D. ; Sivasubramanian, J. ; Fasel, Hermann F. / High accuracy DNS and les of high reynolds number, supersonic base flows and passive control of the near wake. Department of Defense High Performance Computing Modernization Program: Proceedings of the HPCMP Users Group Conference 2005. Vol. 2005 2005. pp. 119-127
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