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Schülein, Erich (2014) Simplified Model for Flow-heating Effect on Wave-drag Reduction of Blunt Bodies. 19. DGLR-Fachsymposium der STAB, 2014-11-04 - 2014-11-05, München, Deutschland.
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Official URL: http://www.stab2014.tum.de
Abstract
This paper presents an analytical model describing the flow-heating effect on the wave-drag reduction of blunt bodies. The key mechanism simulated is the phenomenon called “hot-spike” effect. Due to the heating of the initially supersonic flow in particular the stagnation pressure are decreased inside the heated wake. If the deficit of the total pressure upstream of the bow shock wave becomes high enough, a free recirculation bubble in the front of a blunt body accompanied by a favorable transformation of the bow-shock structure appears. The validation of the method is conducted by experimental and numerical results obtained former at Mach 3. The comparison presented demonstrates excellent agreement particularly for detached-shock model configurations (hemisphere or blunt cone).
| Item URL in elib: | https://elib.dlr.de/89086/ | ||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||
| Title: | Simplified Model for Flow-heating Effect on Wave-drag Reduction of Blunt Bodies | ||||||||
| Authors: |
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| Date: | 2014 | ||||||||
| Refereed publication: | Yes | ||||||||
| Open Access: | No | ||||||||
| Gold Open Access: | No | ||||||||
| In SCOPUS: | No | ||||||||
| In ISI Web of Science: | No | ||||||||
| Page Range: | pp. 62-63 | ||||||||
| Series Name: | Jahresbericht 2014 | ||||||||
| Status: | Published | ||||||||
| Keywords: | Drag reduction, hot-spike effect, energy deposition, effectiveness ratio, heating power ratio | ||||||||
| Event Title: | 19. DGLR-Fachsymposium der STAB | ||||||||
| Event Location: | München, Deutschland | ||||||||
| Event Type: | national Conference | ||||||||
| Event Start Date: | 4 November 2014 | ||||||||
| Event End Date: | 5 November 2014 | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | fixed-wing aircraft | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||
| DLR - Research theme (Project): | L - Military Technologies (old) | ||||||||
| Location: | Göttingen | ||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > High Speed Configurations | ||||||||
| Deposited By: | Micknaus, Ilka | ||||||||
| Deposited On: | 12 Nov 2014 13:18 | ||||||||
| Last Modified: | 24 Apr 2024 19:55 |
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