The direct jumping of molecules through the compression of gas centrifuge / Tokmantsev V.I., Seleznev V.D. // Vacuum. - 2014. - V. 109, l. . - P. 349-353.

ISSN:
0042207X
Type:
Article
Abstract:
A 3D numerical simulation of pressure distribution in the helicoid multi-groove Holweck pump as the compression of a gas centrifuge is carried out. It was shown that the combination of the free molecular regime and clearance between the compression rotor and stator leads to an appreciable effect of collisionless jumping, which essentially influences the pressure in a high vacuum chamber. When neglecting the jumping effect, the limit compression ratio is very large. The jumping considerably reduces the compression ratio to approximately the same moderate value for different gases. As a result of the simulation, the limit compression ratio can be obtained as an optimizable function of variable parameters such as the groove depth, width and angle of inclination. The numerical results can be interpreted within the framework of a simple phenomenological model. © 2014 Elsevier Ltd. All rights reserved.
Author keywords:
Centrifuge; Compression ratio; Rarefied gas
Index keywords:
Centrifuges; 3-D numerical simulation; Gas centrifuges; High-vacuum chambers; Numerical results; Phenomenological modeling; Rarefied gas; Rotor and stators; Variable parameters; Compression ratio (mac
DOI:
10.1016/j.vacuum.2014.06.005
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921515195&doi=10.1016%2fj.vacuum.2014.06.005&partnerID=40&md5=04e758f2bf2ca07e8a702e6a06b478ee
Соавторы в МНС:
Другие поля
Поле Значение
Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921515195&doi=10.1016%2fj.vacuum.2014.06.005&partnerID=40&md5=04e758f2bf2ca07e8a702e6a06b478ee
Affiliations Department of Technical Physics, Ural Federal University, Ekaterinburg, Russian Federation
Author Keywords Centrifuge; Compression ratio; Rarefied gas
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Correspondence Address Tokmantsev, V.I.; Department of Technical Physics, Ural Federal UniversityRussian Federation
Publisher Elsevier Ltd
CODEN VACUA
Language of Original Document English
Abbreviated Source Title Vacuum
Source Scopus