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Experimental Investigation of Supersonic Fluid-Structure Interaction for Future Space Transportation Systems

Daub, Dennis (2023) Experimental Investigation of Supersonic Fluid-Structure Interaction for Future Space Transportation Systems. DLR-Forschungsbericht. DLR-FB-2023-9. Dissertation. RWTH Aachen University. 164 S. doi: 10.57676/cbaa-ce26.

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Official URL: https://publications.rwth-aachen.de/record/967977


Efficient orbital launch vehicles require a weight-optimized structure that can reliably withstand severe aerothermodynamic loads. The relevant loads, which are crucial for the design of such light-weight structures, can depend on the interaction of the thermal and deformation state of the structure with the surrounding flow field. This is referred to as Fluid-structure interaction (FSI). The reliable prediction of these loads is difficult, both for simplified engineering models and highfidelity models, because such FSI problems are typically non-linear and, in many cases, dependent on turbulence. To improve fundamental understanding of such problems and to provide validation and reference data for modelling, a set of wind tunnel experiments was conducted where thin elastic panels were subjected to super- and hypersonic flow conditions ranging from cold conditions at high Reynolds numbers to high-enthalpy conditions. The experiments were conducted in the wind tunnels TMK, H2K, and L3K at DLR, Cologne. The observed behaviors of the panels include structural dynamics driven by the intrinsic dynamics of Shock-wave/boundary-layer interaction (SWBLI) and also by prescribed incident shock movements, panel flutter with and without SWBLI, and thermal buckling, in some cases with plastic effects. Cases combining both temperature- and pressure-driven effects were used to study the influence of the thermal and buckling state of the structure on structural dynamics. The experiments were accompanied by reference measurements on rigid wall structures to characterize thermal and pressure loads. The results of this study enabled a detailed analysis of the behavior of structures in super- and hypersonic flow environments, and also their influence on the flow field. Several data sets from these experiments have already successfully been used for comparison to numerical simulations.

Item URL in elib:https://elib.dlr.de/198022/
Document Type:Monograph (DLR-Forschungsbericht, Dissertation)
Additional Information:DFG Collaborative Research Center “Technological Foundations for the Design of Thermally and Mechanically Highly Loaded Components of Future Space Transportation Systems” (SFB TRR 40)
Title:Experimental Investigation of Supersonic Fluid-Structure Interaction for Future Space Transportation Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Daub, DennisUNSPECIFIEDhttps://orcid.org/0000-0002-6030-698XUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:164
Publisher:Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)
Keywords:fluid-structure interaction (FSI), shock-wave/boundary-layer interaction (SWBLI), supersonic flow, hypersonic flow, turbulence, wind tunnel, flutter, aeroelasticity, thermal buckling, reusable launch vehicles
Institution:RWTH Aachen University
Department:Fakultät für Maschinenwesen
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 > Supersonoc and Hypersonic Technology
Deposited By: Daub, Dennis
Deposited On:07 Nov 2023 14:19
Last Modified:07 Nov 2023 14:19

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