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

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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.
Original languageEnglish
Number of pages11
Publication statusPublished - 18 Apr 2017
Event7th European Conference on Space Debris - ESA/ESOC, Darmstadt, Germany
Duration: 18 Apr 201721 Apr 2017
https://conference.sdo.esoc.esa.int

Conference

Conference7th European Conference on Space Debris
CountryGermany
CityDarmstadt
Period18/04/1721/04/17
Internet address

Keywords

  • DSMC
  • heat transfer
  • sensitivity analysis
  • surrogate modeling
  • re-entry analysis

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