Title

Multi-Fidelity Turbulent Heating Prediction of Hypersonic Inflatable Aerodynamic Decelerators with Surface Scalloping

Abstract

The objective of this work was to investigate a multi-fidelity modeling approach to accurately and efficiently predict the turbulent convective heating on Hypersonic Inflatable Aerodynamic Decelerators with both smooth and scalloped walls. A previously developed co-Kriging based multi-fidelity modeling approach was used to model the turbulent and laminar convective heat fluxes on smooth wall vehicles. The smooth wall turbulent and laminar multi-fidelity heating models were then combined to create a multi-fidelity model of the augmented turbulent heat flux on scalloped vehicles. The smooth wall turbulent heat flux multi-fidelity model was found to have a mean convective heat rate error of approximately 7% when compared to high-fidelity CFD simulations. The scalloped augmented turbulent heat flux multi-fidelity model was found to have a mean convective heat rate error of approximately 10% when compared to high-fidelity CFD simulations. Compared to a single fidelity model, the multi-fidelity model required approximately one-quarter the number of high-fidelity model evaluations to obtain the same accuracy level. The computational cost of evaluating the multi-fidelity model was approximately five orders of magnitude less than one high-fidelity model simulation.

Meeting Name

AIAA Aviation 2020 FORUM (2020: Jun. 15-19, Virtual)

Department(s)

Mechanical and Aerospace Engineering

Comments

National Aeronautics and Space Administration, Grant 80NSSC17K0170

International Standard Book Number (ISBN)

978-162410598-2

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.

Publication Date

19 Jun 2020

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