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.
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Acknowledgments
P. Nizenkov wishes to thank the Landesgraduiertenförderung Baden-Württemberg and Airbus DS GmbH for supporting the research. Computational resources have been provided by the High Performance Computing Center Stuttgart (HLRS) of the University of Stuttgart.
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This paper is based on a presentation at the 8th European Symposium on Aerothermodynamics for Space Vehicles, March 2–6, 2015, Lisbon, Portugal.
An erratum to this article is available at http://dx.doi.org/10.1007/s12567-016-0141-5.
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Nizenkov, P., Noeding, P., Konopka, M. et al. Verification and validation of a parallel 3D direct simulation Monte Carlo solver for atmospheric entry applications. CEAS Space J 9, 127–137 (2017). https://doi.org/10.1007/s12567-016-0133-5
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DOI: https://doi.org/10.1007/s12567-016-0133-5