CEAS Space Journal

, Volume 9, Issue 1, pp 127–137 | Cite as

Verification and validation of a parallel 3D direct simulation Monte Carlo solver for atmospheric entry applications

  • Paul Nizenkov
  • Peter Noeding
  • Martin Konopka
  • Stefanos Fasoulas
Original Paper

Abstract

The in-house direct simulation Monte Carlo solver PICLas, which enables parallel, three-dimensional simulations of rarefied gas flows, is verified and validated. Theoretical aspects of the method and the employed schemes are briefly discussed. Considered cases include simple reservoir simulations and complex re-entry geometries, which were selected from literature and simulated with PICLas. First, the chemistry module is verified using simple numerical and analytical solutions. Second, simulation results of the rarefied gas flow around a \(70^{\circ }\) blunted-cone, the REX Free-Flyer as well as multiple points of the re-entry trajectory of the Orion capsule are presented in terms of drag and heat flux. A comparison to experimental measurements as well as other numerical results shows an excellent agreement across the different simulation cases. An outlook on future code development and applications is given.

Keywords

Rarefied gas dynamics Atmospheric entry Direct simulation Monte Carlo Verification Validation 

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Copyright information

© CEAS 2016

Authors and Affiliations

  1. 1.Institute of Space Systems (IRS)University of StuttgartStuttgartGermany
  2. 2.Thermal EngineeringAirbus DS GmbHBremenGermany

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