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Diskretni plinski kavitacijski model z upoštevanjem vpliva nestalnega kapljevinskega trenja v cevi
Bergant, Anton (Author), Karadžić, Uroš (Author), Vítkovský, John (Author), Vušanović, Igor (Author), Simpson, Angus R. (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-X1RK7F4E This link opens in a new window

Abstract
Prehodni kavitacijski tok pare v cevi vzbudi padec tlaka na parni tlak kapljevine. Podan je kratek oris metode karakteristik, temu slede osnove nestalnega kapljevinskega trenja in prehodnega kavitacijskega toka v cevi. Glavni cilj tega prispevka je predstavitev novega plinskega kavitacijskega modela (DPKM) z upostevanjem vplivov nestalnega trenja. Rezultati izračuna so primerjani z rezultati meritev v laboratoriju. Upostevanje nestalnega trenja vDPKM da bolj natančne računske rezultate.

Language:Slovenian
Keywords:diskretni plinski kavitacijski modeli, nestalno trenje
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Year:2005
Publisher:Association of Mechanical Engineers and Technicians of Slovenia et al.
Number of pages:str. 692-710
Numbering:Letn. 51, št. 11
UDC:532.528:532.542
ISSN on article:0039-2480
COBISS.SI-ID:8661019 Link is opened in a new window
Views:782
Downloads:240
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Language:English
Title:A discrete gas-cavity model that considers the frictional effects of unsteady pipe flow
Abstract:
Transient, vaporous, cavitating pipe flow occurs when the pressure drops to the liquidćs vapour pressure. A brief description of the method of the characteristics and fundamentals of unsteady pipe-flow friction and transient,cavitating pipe flow are given. The main objective of this paper is to present a novel, discrete gas-cavity model (DGCM) with a consideration of unsteady frictional effects. The numerical results are compared with the results from laboratory measurements. The inclusion of unsteady friction into the DGCM significantly improves the numerical results.

Keywords:piping systems, water hammer, cavitating flow, discrete gas cavity models, unsteady friction

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