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NASA NTRS · 20220016041

Quantifying Emergent Fluid Dynamics Using Reynolds-Interpolated Fluid Reduced-order Models

Chris Edwards·Michael W Lee·Donya Ramezanian·Ralph C Smith
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Abstract

Fluid reduced-order models (ROMs) which capture the flow physics within the problem's physical domain are usually constrained in accuracy to only the parameter points, e.g. Reynolds and Mach numbers, at which reference data was provided. Interpolation-focused quantity-of-interest ROMs are often structured differently and fail to provide flow volume data with the same quality - if at all. In this paper, techniques which reside at the intersection of these two ROM schools - flow physics ROMs which can be interpolated within a parameter space of interest - are explored. Using a combination of existing and novel techniques, emergent physics are identified using a fluid ROM at parameter points which are not provided in the ROM's training data.

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uncertainty quantificationreduced-order modelingproper orthogonal decompositioninterpolation

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Chris Edwards, Michael W Lee, Donya Ramezanian, Ralph C Smith. Quantifying Emergent Fluid Dynamics Using Reynolds-Interpolated Fluid Reduced-order Models. https://ntrs.nasa.gov/citations/20220016041

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