A Reduced Order Modeling Approach to Blunt-Body Aerodynamic Modeling

Dean, Hayden V.; Decker, Kenneth; Robertson, Bradford E.; Mavris, Dimitri N.

Title:

A Reduced Order Modeling Approach to Blunt-Body Aerodynamic Modeling

dc.contributor.author	Dean, Hayden V.
dc.contributor.author	Decker, Kenneth
dc.contributor.author	Robertson, Bradford E.
dc.contributor.author	Mavris, Dimitri N.
dc.contributor.corporatename	Georgia Institute of Technology. Aerospace Systems Design Laboratory
dc.contributor.corporatename	American Institute of Aeronautics and Astronautics
dc.date.accessioned	2024-01-19T16:27:53Z
dc.date.available	2024-01-19T16:27:53Z
dc.date.issued	2024-01
dc.description	Presented at AIAA SciTech Forum 2024
dc.description.abstract	Blunt-body entry vehicles display complex flow phenomena that results in dynamic instabilities in the low supersonic to transonic flight regime. Dynamic stability coefficients are typically calculated through parameter identification and trajectory regression techniques using both physical test data and Computational Fluid Dynamics (CFD) simulations. This methodology can generate dynamic stability coefficients, but the resulting data points are limited, and have high degrees of uncertainty due to the nature of data reduction methods. With increased computational capabilities, new methods for dynamic stability quantification have been explored that seek to leverage the high-dimensional aerodynamic data produced from CFD simulations to compute dynamic stability behavior and address the limitations of linearized aerodynamics. The objective of this work is to advance the quantification of dynamic stability behavior of blunt-body entry vehicles by leveraging high-fidelity CFD data through Reduced Order Modeling (ROM). ROMs are capable of leveraging high-fidelity aerodynamic data in a cost effective manner by finding a low-dimensional representation of the Full Order Model (FOM). ROMs based on Proper Orthogonal Decomposition (POD) have shown success in recreating CFD analyses of parametric ROM applications and time-varying ROM applications. Results of this research demonstrated success in constructing two ROMs of a notional blunt-body entry vehicle to recreate heatshield and backshell pressure distributions from forced oscillation trajectories. The ROM was more successful at reconstructing the heatshield pressure distribution, with challenges arising in predicting the chaotic response of backshell latent coordinates.
dc.description.sponsorship	NASA Early Stage Innovation grant 80NSSC23K0229
dc.identifier.citation	Dean, H. V., Decker, K., Robertson, B. E., Mavris, D. N. "A Reduced Order Modeling Approach to Blunt-Body Aerodynamic Modeling". AIAA SciTech Forum. 2024. DOI: https://doi.org/10.2514/6.2024-1914
dc.identifier.doi	https://doi.org/10.2514/6.2024-1914
dc.identifier.uri	https://hdl.handle.net/1853/73241
dc.publisher	Georgia Institute of Technology
dc.publisher.original	American Institute of Aeronautics and Astronautics (AIAA)
dc.rights.metadata	https://creativecommons.org/publicdomain/zero/1.0/
dc.subject	Reduced Order Models
dc.subject	Entry capsule
dc.subject	Entry vehicle
dc.subject	EDL
dc.subject	Genesis
dc.subject	POD
dc.subject	Kriging
dc.title	A Reduced Order Modeling Approach to Blunt-Body Aerodynamic Modeling
dc.type	Text
dc.type.genre	Post-print
dspace.entity.type	Publication
local.contributor.author	Robertson, Bradford E.
local.contributor.author	Mavris, Dimitri N.
local.contributor.corporatename	College of Engineering
local.contributor.corporatename	Aerospace Systems Design Laboratory (ASDL)
local.contributor.corporatename	Daniel Guggenheim School of Aerospace Engineering
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