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Gawehn, Thomas and Gülhan, Ali and Giglmaier, Marcus and Quaatz, Jan Frederik and Adams, N.A. (2012) Analysis of gap influence on pseudo-shock system asymmetry in rectangular Laval nozzles. 20th International Shock Interaction Symposium, 2012-08-20 - 2012-08-24, Stockholm, Sweden.
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Abstract
A pseudo-shock system in a rectangular nozzle with parallel side walls is investigated at different pre-shock Mach numbers by means of wall pressure measurements and high-speed schlieren visualization. In detail, we analyze the effect of small streamwise gaps (Δz = O(10^-4) m) between constructional elements. An asymmetrical pseudo-shock system is observed for a gap-free configuration whereas configurations including small gaps show a symmetric behavior. Furthermore, the internal structure of the entire pseudo-shock system visibly changes by increasing the gap width. A detailed analysis of pressure measurements as well as high speed schlieren images is shown and possible explanations are discussed.
| Item URL in elib: | https://elib.dlr.de/78103/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | Analysis of gap influence on pseudo-shock system asymmetry in rectangular Laval nozzles | ||||||||||||||||||||||||
| Authors: |
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| Date: | August 2012 | ||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| Keywords: | pseudo-shock system, shock asymmetry, longitudinal gaps | ||||||||||||||||||||||||
| Event Title: | 20th International Shock Interaction Symposium | ||||||||||||||||||||||||
| Event Location: | Stockholm, Sweden | ||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||
| Event Start Date: | 20 August 2012 | ||||||||||||||||||||||||
| Event End Date: | 24 August 2012 | ||||||||||||||||||||||||
| Organizer: | KTH Royal Institute of Technology | ||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||||
| HGF - Program Themes: | Space Transportation | ||||||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||
| DLR - Program: | R RP - Space Transportation | ||||||||||||||||||||||||
| DLR - Research theme (Project): | R - Raumfahrzeugsysteme - Anlagen u. Messtechnik (old) | ||||||||||||||||||||||||
| Location: | Köln-Porz | ||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien | ||||||||||||||||||||||||
| Deposited By: | Gawehn, Dr.-Ing. Thomas | ||||||||||||||||||||||||
| Deposited On: | 06 Nov 2012 08:38 | ||||||||||||||||||||||||
| Last Modified: | 24 Apr 2024 19:44 |
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- Analysis of gap influence on pseudo-shock system asymmetry in rectangular Laval nozzles. (deposited 06 Nov 2012 08:38) [Currently Displayed]
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