Mathematical modeling non-contact external compression pumps with different molecular weights gases
| Autor: | A. A. Raykov, A. A. Isaev, A. V. Burmistrov |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", Vol 8, Iss 3, Pp 46-52 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2588-0373 2587-764X |
| DOI: | 10.25206/2588-0373-2024-8-3-46-52 |
| Popis: | A distinctive feature of Roots type vacuum pumps is the selective of pumping, which is due to the dependence of reverse flows on the type of gas. To study this phenomenon, a mathematical model of the work process is used, based on solving differential equations of a system with variable mass. Comparisons of the experimental and calculated values of pumping speed and pressure increase for helium, argon and air show a discrepancy of no more than 10 %. Calculations have shown that under viscous flow conditions, switching from pumping argon to helium reduces pumping speed by more than 10 % and pressure increase by 50 %. |
| Databáze: | Directory of Open Access Journals |
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