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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.
|Number of pages||11|
|Publication status||Published - 18 Apr 2017|
|Event||7th European Conference on Space Debris - ESA/ESOC, Darmstadt, Germany|
Duration: 18 Apr 2017 → 21 Apr 2017
|Conference||7th European Conference on Space Debris|
|Period||18/04/17 → 21/04/17|
- heat transfer
- sensitivity analysis
- surrogate modeling
- re-entry analysis
Falchi, A., Gentile, L., Minisci, E., Tirelli, M. & Perugini, P., 1 Jul 2019.
Research output: Contribution to conference › PaperOpen AccessFile6 Downloads (Pure)