Oblapenko, Georgii and Hannemann, Volker (2022) Uncertainty Quantification of Expanding High-Enthalpy Air Flows. In: 23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics. 23. STAB-DGLR-Symposium 2022, 9.-10. Nov. 2022, Berlin.
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Official URL: https://www.tu.berlin/index.php?id=27890
Abstract
In the present work, we study the sensitivity of expanding hypersonic air flows in the HEG facility with respect to the thermochemical relaxation rates and reservoir conditions, along with the impact of uncertainties in the rates and reservoir conditions on uncertainties of the free-stream parameters. A simplified 1-D formulation of the flow equations is utilized to allow for simultaneous variation of a large number (10) of uncertain parameters. The simulation results show large uncertainties in the vibrational temperature of oxygen and molar fractions of oxygen-containing species, mainly due to uncertainties in the reservoir parameters and data on thermochemical relaxation rates of molecular oxygen.
Item URL in elib: | https://elib.dlr.de/190403/ | ||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Uncertainty Quantification of Expanding High-Enthalpy Air Flows | ||||||||||||
Authors: |
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Date: | November 2022 | ||||||||||||
Journal or Publication Title: | 23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Editors: |
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Status: | Published | ||||||||||||
Keywords: | shock tunnel, thermochemical relaxation, numerical simulation, uncertainty quantification, hypersonic flow | ||||||||||||
Event Title: | 23. STAB-DGLR-Symposium 2022 | ||||||||||||
Event Location: | Berlin | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 9.-10. Nov. 2022 | ||||||||||||
Organizer: | STAB | ||||||||||||
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 - Reusable Space Systems and Propulsion Technology | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Spacecraft, GO | ||||||||||||
Deposited By: | Hannemann, Dr.rer.nat. Volker | ||||||||||||
Deposited On: | 08 Dec 2022 18:07 | ||||||||||||
Last Modified: | 10 Mar 2023 18:16 |
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