Multi-fidelity approach for aerodynamic modelling and simulation of uncontrolled atmospheric destructive entry

Fábio Morgado, Sai Abhishek Peddakotla, Catarina Garbacz, Massimiliano L. Vasile, Marco Fossati

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Abstract

This paper proposes a multi-fidelity approach to the modelling and simulation of destructive atmospheric re-entry of human-made space objects. The presence of fragments, generated during the demise process, and the complex geometries of the objects determine the formation of complex flow features that need to be accurately resolved to limit the uncertainty on the ground impact risk. Critical to the determination of the dynamics of the fragments is the ability to correctly predict aerothermodynamic loads. The paper proposes an approach to the integration of expensive high-fidelity Computational Fluid Dynamics (CFD) solvers with fast low-fidelity methods for aerothermodynamics load calculation, that achieves a favourable trade-off between cost and accuracy. This multi-fidelity aerothermal approach is coupled with a 6-dof dynamic model to determine the motion of the fragments. For the high-fidelity modelling, a quasi-steady approach is used to determine the dynamics of the fragments in the instant following the breakup. The approach is validated with experimental data. Finally, a test case is presented to demonstrate the effectiveness of the proposed multi-fidelity at reducing the uncertainty in destructive re-entry predictions.
Original languageEnglish
Title of host publicationAIAA SCITECH 2022 Forum
Place of PublicationReston, VA.
Number of pages12
DOIs
Publication statusPublished - 3 Jan 2022
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States
Duration: 3 Jan 20227 Jan 2022

Publication series

NameAIAA SCITECH 2022 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc.

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Country/TerritoryUnited States
CitySan Diego
Period3/01/227/01/22

Keywords

  • aerodynamics
  • aeronautical engineering
  • aeronautics
  • aerothermodynamics

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