The helicoid multi-groove vacuum pump in both viscous and molecular states

dc.contributor.author	Πάνος, Χρήστος Ν.	el
dc.contributor.author	Αντωνίου, Αναστάσιος Γ.	el
dc.contributor.author	Βαλαμόντες, Σπύρος Ε.	el
dc.date.accessioned	2015-05-17T18:04:45Z
dc.date.available	2015-05-17T18:04:45Z
dc.date.issued	2015-05-17
dc.identifier.uri	http://hdl.handle.net/11400/10617
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.elsevier.com	en
dc.subject	Electron tubes
dc.subject	Equations of motion
dc.subject	Numerical methods
dc.subject	Pipe flow
dc.subject	Pressure
dc.subject	Speed
dc.subject	Viscosity
dc.subject	Ηλεκτρονικοί σωλήνες
dc.subject	Εξισώσεις κίνησης
dc.subject	Αριθμητικές μέθοδοι
dc.subject	Ροή σε σωλήνα
dc.subject	Πίεση
dc.subject	Ταχύτητα
dc.subject	Ιξώδες
dc.title	The helicoid multi-groove vacuum pump in both viscous and molecular states	en
heal.type	journalArticle
heal.classification	Science
heal.classification	Physics
heal.classification	Επιστήμες
heal.classification	Φυσική
heal.classificationURI	http://zbw.eu/stw/descriptor/15685-2
heal.classificationURI	http://zbw.eu/stw/descriptor/15669-0
heal.classificationURI	N/A-Επιστήμες
heal.classificationURI	N/A-Φυσική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85042239
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85044524
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85126486
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh99005166
heal.identifier.secondary	DOI: 10.1016/0042-207X(94)90121-X
heal.language	en
heal.access	campus
heal.publicationDate	1994-08
heal.bibliographicCitation	PANOS, C.N., ANTONIOU, A.G., VALAMONTES, S.E. (1994). The helicoid multi-groove vacuum pump in both viscous and molecular states. Vacuum. [online] 45 (8). p. 841-847. Available from: http://www.elsevier.com/[Accessed 23/09/2002]	en
heal.abstract	In this paper, a helicoid multi-groove vacuum pump (drag pump) of indirect exhaust is studied from the theoretical point of view. The motion of gas is considered within a tube of orthogonal cross-section. The pumping action is caused by moving the opposite sides with different speeds in the x-direction. At the beginning, a new term, the separation pressure between viscous and molecular states, is defined and then the theory of Gaede for the helicoid single-groove drag pump for the molecular state is extended to the helicoid multi-groove drag pump, for both viscous and molecular states. Finally, the pump characteristics are studied as a function of the helicoid step and the optimum angle for pump design is given.	en
heal.publisher	Elsevier	en
heal.journalName	Vacuum	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true