Year: 2023
Type: conference-paper
Abstract: This research aims at analysing thermo-chemical properties of the hypersonic high-enthalpy flow in the L2K wind tunnel, situated in Koln at the German Aerospace Center (DLR). ln 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.
Source: elib (German Aerospace Center)
Authors: CIRO SALVI, LARS STEFFENS, OLIVER HOHN, ALI GULHAN, FILIPPO MAGGI
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6959990657