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Coupled Simulation of Hypersonic Fluid-Structure Interaction with Plastic Deformation

Martin, Katharina and Daub, Dennis and Esser, Burkard and Gülhan, Ali and Reese, Stefanie (2022) Coupled Simulation of Hypersonic Fluid-Structure Interaction with Plastic Deformation. AIAA Journal, 60 (6), pp. 3424-3437. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.J060561. ISSN 0001-1452.

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Official URL: https://arc.aiaa.org/doi/10.2514/1.J060561

Abstract

Supersonic and hypersonic vehicles experience significant aerothermal loads from the exterior flowfield and/or their propulsion system. Thus, reliable prediction of aerothermal heating is important for the design of such vehicles. However, even modest temperature changes can lead to buckling of mechanically constraint lightweight structures. This deformation changes the flowfield, which can lead to locally amplified heating, which in turn increases deformation and temperature even further. Thus, fluid-structure coupled modeling of such problems is crucial for the reliable prediction of the resulting temperatures. To investigate these phenomena numerically, we conducted a three-dimensional thermomechanical simulation of fluid-structure interaction (FSI) for thermal buckling. It is necessary to use a thermomechanically coupled model because the temperature and deformation distributions across the panel are highly nonlinear and dependent on both the flowfield and the state of the structure. Due to the high temperatures (>1400  K) in the metallic panel and the constrains, which allow no uniform expansion, the stresses exceed the yield stress, and plasticity occurs. A strong two-way coupled FSI simulation was set up and split into a thermal solid, a mechanical solid, and a fluid computation. The simulated temperature and displacement distribution were compared to experiments conducted in the arc-heated wind tunnel L3K at the German Aerospace Center (DLR). We obtained good agreement between the simulation and experimental results. The observed deformation of the structure was found to locally increase the wall heat flux by up to 40%.

Item URL in elib:https://elib.dlr.de/186677/
Document Type:Article
Title:Coupled Simulation of Hypersonic Fluid-Structure Interaction with Plastic Deformation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Martin, KatharinaIFAM RWTH AachenUNSPECIFIEDUNSPECIFIED
Daub, DennisUNSPECIFIEDhttps://orcid.org/0000-0002-6030-698XUNSPECIFIED
Esser, BurkardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gülhan, AliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reese, StefanieIFAM RWTH AachenUNSPECIFIEDUNSPECIFIED
Date:June 2022
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:60
DOI:10.2514/1.J060561
Page Range:pp. 3424-3437
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0001-1452
Status:Published
Keywords:Fluid-Structure Interaction, FSI, Hypersonic Flow, Buckling, Plastic Deformation, Coupled Simulation, Modelling, Metallic TPS, Wind Tunnel Experiment, L3K, High-Enthalpy Flow
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: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Daub, Dennis
Deposited On:09 Sep 2022 10:30
Last Modified:09 Sep 2022 10:30

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