Influence of the material quality of primary gas jets on the final vacuum created by a supersonic gas ejector

Szabó, Szilárd (2001) Influence of the material quality of primary gas jets on the final vacuum created by a supersonic gas ejector. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 2 (1). pp. 131-144. ISSN 1586-2070

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Abstract

The paper examines ejectors using supersonic gas jets in the wide range of ejectors. Previously a method was developed to calculate the supersonic operational domains of ejectors when primary and secondary gas jets of different material quality are used. A methodology was also developed for designing ejectors creating a given operational domain. Now, in addition to the presentation of the fundamentals of the methodology developed, the analyses conducted by means of the methodology will be reported on. It is investigated what influence the material qualities of the two gas jets exert on the operation of an ejector with a given geometry. Furthermore, the paper presents how the geometry of the ejector creating a given final vacuum depends on the material quality of the gas operating it (primary gas).

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