Aero-thermal re-entry sensitivity analysis using DSMC and a high dimensional model representation-based approach

Falchi, Alessandro and Minisci, Edmondo and Vasile, Massimiliano and Kubicek, Martin (2017) Aero-thermal re-entry sensitivity analysis using DSMC and a high dimensional model representation-based approach. In: 7th European Conference on Space Debris, 2017-04-18 - 2017-04-21, ESA/ESOC.

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Abstract

This paper presents a sensitivity analysis for the hypersonic aero-thermal convective heat transfer from the free molecular to the slip-flow regime for cylindrical and cubic geometries. The analyses focus on a surface-averaged heat transfer coefficient at various atmospheric conditions. The sensitivity analyses have been performed by coupling a High Dimensional Model Representation based approach and a Direct Simulation Monte Carlo code. The geometries have been tested with respect to different inputs parameters; altitude, attitude, wall temperature and geometric characteristics. After the initial sensitivity analyses, the N-dimensional surrogate models of the surface-averaged heat transfer coefficient have been defined and tested. Hereby, a shape-based DSMC mesh refinement correction factor for reducing the overall analyses computational times is also presented.

ORCID iDs

Falchi, Alessandro ORCID logoORCID: https://orcid.org/0000-0002-7452-5729, Minisci, Edmondo ORCID logoORCID: https://orcid.org/0000-0001-9951-8528, Vasile, Massimiliano ORCID logoORCID: https://orcid.org/0000-0001-8302-6465 and Kubicek, Martin ORCID logoORCID: https://orcid.org/0000-0002-9800-1209;
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