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Wagner, Alexander and Laurence, Stuart and Martinez Schramm, Jan and Hannemann, Klaus and Wartemann, Viola and Lüdeke, Heinrich and Tanno, Hideyuki and Ito, Katsuhiro (2011) Experimental investigation of hypersonic boundary-layer transition on a cone model in the High Enthalpy Shock Tunnel (HEG) at Mach 7.5. Seminar, 19.04.2011, California Institute of Technology (Caltech), Los Angeles, Kalifornien.
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Abstract
Hypersonic boundary-layer transition on a 7 half-angle cone was investigated experimentally iin the DLR High Enthalpy Shock Tunnel Göttingen (HEG) at Mach 7.5. The cone model, provided by the Japan Aerospace Exploration Agency (JAXA), has a length of 1100mm and was tested with nose radii of 2.25mm and 5mm. The free-stream unit Reynolds number was varied over the range of 1.2*10^6 /m to 6.2*10^6 /m at a stagnation enthalpy of H0 = 3.3MJ/kg. The model was equipped with co-axial thermocouples to determine the transition location by means of the surface heat-flux distribution. Ten flush mounted piezoelectric fast-response pressure transducers were used to measure the pressure fluctuations in the boundary-layer associated with second mode instabilities. The results are compared to stability calculations conducted with the DLR NOn-LOcal Transition analysis code, NOLOT.
| Item URL in elib: | https://elib.dlr.de/69684/ | ||||||||||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||||||
| Title: | Experimental investigation of hypersonic boundary-layer transition on a cone model in the High Enthalpy Shock Tunnel (HEG) at Mach 7.5 | ||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 2011 | ||||||||||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||||||
| Keywords: | HEG, transition, hypersonic flow, cone, Mach 8, Mack modes, second mode instability, stability analysis, NOLOT | ||||||||||||||||||||||||||||||||||||
| Event Title: | Seminar | ||||||||||||||||||||||||||||||||||||
| Event Location: | California Institute of Technology (Caltech), Los Angeles, Kalifornien | ||||||||||||||||||||||||||||||||||||
| Event Type: | Other | ||||||||||||||||||||||||||||||||||||
| Event Dates: | 19.04.2011 | ||||||||||||||||||||||||||||||||||||
| Organizer: | Joseph E. Shepherd | ||||||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||||||||||||||||||
| HGF - Program: | Space (old) | ||||||||||||||||||||||||||||||||||||
| HGF - Program Themes: | W RP - Raumtransport | ||||||||||||||||||||||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||||||||||||||||||||||
| DLR - Program: | W RP - Raumtransport | ||||||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | W - Projekt IMENS-3C (old) | ||||||||||||||||||||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Spacecraft | ||||||||||||||||||||||||||||||||||||
| Deposited By: | Wagner, Alexander | ||||||||||||||||||||||||||||||||||||
| Deposited On: | 18 May 2011 14:19 | ||||||||||||||||||||||||||||||||||||
| Last Modified: | 18 May 2011 14:19 |
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