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High Enthalpy Flow Characterization Using Tunable Diode Laser Absorption Spectroscopy

Salvi, Ciro and Steffens, Lars and Hohn, Oliver and Gülhan, Ali and Maggi, Filippo (2023) High Enthalpy Flow Characterization Using Tunable Diode Laser Absorption Spectroscopy. 11th EUCASS - 9th CEAS, 2023-07, Lausanne, Switzerland. doi: 10.13009/EUCASS2023-839.

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Official URL: https://www.eucass.eu/index.php/conferences-and-publications/search-on-this-website?searchword=eucass2023&searchphrase=all&limit=20&areas%5b0%5d=doc_indexer


This research aims at analysing thermo-chemical properties of the hypersonic high-enthalpy flow in the L2K wind tunnel, situated in Köln at the German Aerospace Center (DLR). In the L2K wind tunnel, Martian atmosphere can be created, and the facility can simulate heat load conditions encountered during atmospheric entry of Martian missions. The focus of this project is the analysis of the non-intrusive experimental technique "Tunable Diode Laser Absorption Spectroscopy" (TDLAS), based on line of sight absorption spectroscopy, and applied to hypersonic flow. A simplified Martian atmosphere (97% CO2 and 3% N2) was used. A new interpretation for CO-TDLAS experimental technique applied to hypersonic wind tunnel flow analysis was developed. Numerical simulations with the DLR-TAU non-equilibrium flow solver were used as support of this analysis, and match between simulations and experiments was observed. Flow speed and absorption line’s width were measured, and the knowledge of L2K’s flow structure was extended.

Item URL in elib:https://elib.dlr.de/199198/
Document Type:Conference or Workshop Item (Speech)
Title:High Enthalpy Flow Characterization Using Tunable Diode Laser Absorption Spectroscopy
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Salvi, CiroUNSPECIFIEDhttps://orcid.org/0000-0002-4185-1042148698648
Steffens, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-2561-0687UNSPECIFIED
Hohn, OliverUNSPECIFIEDhttps://orcid.org/0000-0002-4225-7352UNSPECIFIED
Gülhan, AliUNSPECIFIEDhttps://orcid.org/0000-0001-7460-0576UNSPECIFIED
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:TDLAS, DLAS, Non intrusive, Hypersonic, High enthalpy, Arc-heated wind tunnel, Mars
Event Title:11th EUCASS - 9th CEAS
Event Location:Lausanne, Switzerland
Event Type:international Conference
Event Date:July 2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Salvi, Ciro
Deposited On:14 Dec 2023 09:42
Last Modified:24 Apr 2024 20:59

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