ADBSat: Verification and validation of a novel panel method for quick aerodynamic analysis of satellites
We present the validation of ADBSat, a novel implementation of the panel method including a fast pseudo-shading algorithm, that can quickly and accurately determine the forces and torques on satellites in free-molecular flow. Our main method of validation is comparing test cases between ADBSat, the...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/365133 |
| Acesso em linha: | https://hdl.handle.net/2117/365133 https://dx.doi.org/10.1016/j.cpc.2022.108327 |
| Access Level: | acceso abierto |
| Palavra-chave: | Artificial satellites -- Aerodynamics Monte Carlo method Panel method Free molecular flow Orbital aerodynamics Satellite drag Software validation Direct simulation Monte Carlo Satèl·lits artificials -- Aerodinàmica Montecarlo, Mètode de Àrees temàtiques de la UPC::Física |
| Resumo: | We present the validation of ADBSat, a novel implementation of the panel method including a fast pseudo-shading algorithm, that can quickly and accurately determine the forces and torques on satellites in free-molecular flow. Our main method of validation is comparing test cases between ADBSat, the current de facto standard of direct simulation Monte Carlo (DSMC), and published literature. ADBSat exhibits a significantly shorter runtime than DSMC and performs well, except where deep concavities are present in the satellite models. The shading algorithm also experiences problems when a large proportion of the satellite surface area is oriented parallel to the flow, but this can be mitigated by examining the body at small angles to this configuration (± 0.1°). We recommend that an error interval on ADBSat outputs of up to 3% is adopted. Therefore, ADBSat is a suitable tool for quickly determining the aerodynamic characteristics of a wide range of satellite geometries in different environmental conditions in VLEO. It can also be used in a complementary manner to identify cases that warrant further investigation using other numerical-based methods. |
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