Arda OZUZUN, Michele CAPRIATI, Domenico MASSARI, Pierre SCHROOYEN, Guillaume GROSSIR

DOI Number: N/A

Conference number: HiSST-2025-095

The prediction of hypersonic flight vehicle trajectory depends on having an accurate aerodynamic database across the flight envelope. Numerical simulation to evaluate the entire database is computationally intensive hence the need to have a multi-fidelity framework to efficiently and accurately compute the aerodynamic coefficients. A Multi-Task Gaussian Process is used to fuse low-fidelity data, stemming from Newtonian theory, and high-fidelity data, obtained by simulating the flow around the object by means of CFD. Accurate computational grids for CFD are obtained by employing a shock-fitting technique. This is achieved by employing an in-house library HEROES, which is also described. The full
framework is used to construct the aerodynamic database for the DRACO capsule. Results show that the use of a multi-fidelity strategy largely increases the accuracy of the surrogate model when limited high-fidelity data are available.

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In Categories: 1.Events, 1.HiSST 2025, High-Speed Aerodynamics and Aerothermodynamics with application to hypersonic regimes
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