| dc.contributor.author | Rodrigo Cassineli Palharini | |
| dc.contributor.author | João Luiz F. Azevedo | |
| dc.contributor.author | Diego Vera Sepúlveda | |
| dc.contributor.other | Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Santiago 7941169, Chile | |
| dc.contributor.other | Instituto de Aeronáutica e Espaço, São José dos Campos 12228-904, SP, Brazil | |
| dc.contributor.other | Department of Mechanical Engineering, Universidad Técnica Federico Santa María, Santiago 8940897, Chile | |
| dc.date.accessioned | 2025-08-27T13:59:21Z | |
| dc.date.accessioned | 2025-10-08T08:42:56Z | |
| dc.date.available | 2025-10-08T08:42:56Z | |
| dc.date.issued | 01-07-2025 | |
| dc.identifier.uri | http://digilib.fisipol.ugm.ac.id/repo/handle/15717717/36872 | |
| dc.description.abstract | During atmospheric reentry, a significant number of chemical reactions are produced inside the high-temperature shock wave formed upstream of the spacecraft. Chemical reactions can significantly alter the flowfield structure surrounding the vehicle and affect surface properties, including heat transfer, pressure, and skin friction coefficients. In this scenario, the primary goal of this investigation is to evaluate the Quantum-Kinetic chemistry model for computing rarefied reactive gas flow over simple and complex geometries. The results are compared with well-established reaction models available for the transitional flow regime. The study focuses on two configurations, a sphere and the Orion capsule, analyzed at different altitudes to assess the impact of chemical nonequilibrium across varying flow rarefaction levels. Including chemical reactions led to lower post-shock temperatures, broader shock structures, and significant species dissociation in both geometries. These effects strongly influenced the surface heat flux, pressure, and temperature distributions. Comparison with results from the literature confirmed the validity of the implemented QK model and highlighted the importance of including chemical kinetics when simulating hypersonic flows in the upper atmosphere. | |
| dc.language.iso | EN | |
| dc.publisher | MDPI AG | |
| dc.subject.lcc | Motor vehicles. Aeronautics. Astronautics | |
| dc.title | Rarefied Reactive Gas Flows over Simple and Complex Geometries Using an Open-Source DSMC Solver | |
| dc.type | Article | |
| dc.description.keywords | DSMC | |
| dc.description.keywords | Quantum-Kinetic chemistry model | |
| dc.description.keywords | chemical reactions | |
| dc.description.keywords | rarefied flows | |
| dc.description.keywords | reentry | |
| dc.description.keywords | shock wave | |
| dc.description.doi | 10.3390/aerospace12080651 | |
| dc.title.journal | Aerospace | |
| dc.identifier.e-issn | 2226-4310 | |
| dc.identifier.oai | oai:doaj.org/journal:0187289c8bba44e98e2810e5e8fd2ad9 | |
| dc.journal.info | Volume 12, Issue 8 | |
