Forced convective two phase flow analysis in a circular tube equipped with twisted tapes

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dc.authorid55579651700
dc.authorid6602825059
dc.authorid35090172900
dc.authorid37111080900
dc.contributor.authorOmeroglu G.
dc.contributor.authorComakli O.
dc.contributor.authorKaragoz S.
dc.contributor.authorManay E.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:44:34Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:44:34Z
dc.date.issued2012
dc.departmentBayburt Üniversitesien_US
dc.description.abstractIn forced convection boiling systems, it is important to know the dynamic behavior for understanding and predicting the local and global stability of the system. Besides this, the instability phenomenon in the industrial processes in which two phase flow takes part becomes more of an issue. So, the mechanisms of instabilities and the ways of decreasing the stabilities are of interest of the researchers for a long time. In this study, the effects of pitch ratio, inlet temperature and the mass flow rate on two phase flow instabilities in a horizontal circular tube are investigated. The experiments are conducted under constant system pressure, and a constant heat input of 24 kW is applied to the outer surface of the circular test pipe having constant exit restriction. The results of two different pitch ratios are also compared with the smooth tube. For all investigated cases, the results are evaluated in terms of pressure drop type and density wave type oscillations. The time dependent measurements of top wall temperature, bottom wall temperature, inlet pressure and mass flow rate variations are also presented. The boundaries of the oscillations are found for both twisted tape and smooth channel. It is found that the unstable region of the flow extends while the distance between boundaries increases. It is observed that the system is more stable in the case of the lowest pitch ratio, and the increase of the pitch ratio causes system to be less stable. By the decrease of the inlet temperature, the single phase liquid region extends in the test tube and thus the system becomes more stable. © Sila Science.en_US
dc.identifier.endpage572
dc.identifier.issn1308-772X
dc.identifier.issueSPEC .ISS.1
dc.identifier.scopus2-s2.0-84885076474en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage561
dc.identifier.urihttps://hdl.handle.net/20.500.12403/887
dc.identifier.volume30
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofEnergy Education Science and Technology Part A: Energy Science and Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDynamic oscillation
dc.subjectForced convection boiling
dc.subjectInstability
dc.subjectTwisted tape
dc.subjectTwo phase flow
dc.subjectDensity wave type oscillation
dc.subjectDynamic oscillations
dc.subjectForced convection boiling
dc.subjectLocal and global stabilities
dc.subjectMass flow rate variations
dc.subjectTime dependent measurements
dc.subjectTwisted tapes
dc.subjectTwo-phase flow instabilities
dc.subjectForced convection
dc.subjectPlasma stability
dc.subjectSystem stability
dc.subjectTubes (components)
dc.subjectTwo phase flow
dc.subjectDynamic oscillation
dc.subjectForced convection boiling
dc.subjectInstability
dc.subjectTwisted tape
dc.subjectTwo phase flow
dc.subjectDensity wave type oscillation
dc.subjectDynamic oscillations
dc.subjectForced convection boiling
dc.subjectLocal and global stabilities
dc.subjectMass flow rate variations
dc.subjectTime dependent measurements
dc.subjectTwisted tapes
dc.subjectTwo-phase flow instabilities
dc.subjectForced convection
dc.subjectPlasma stability
dc.subjectSystem stability
dc.subjectTubes (components)
dc.subjectTwo phase flow
dc.titleForced convective two phase flow analysis in a circular tube equipped with twisted tapesen_US
dc.typeArticleen_US

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