Effective property models for homogeneous two-phase flows
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| Title: | Effective property models for homogeneous two-phase flows |
|---|---|
| Authors: | Awad, M.M. awad@engr.mun.ca, Muzychka, Y.S.1 yuri@engr.mun.ca |
| Source: | Experimental Thermal & Fluid Science. Oct2008, Vol. 33 Issue 1, p106-113. 8p. |
| Subjects: | Science, Multiphase flow, Fluid dynamics, Two-phase flow |
| Abstract: | Abstract: Using an analogy between thermal conductivity of porous media and viscosity in two-phase flow, new definitions for two-phase viscosity are proposed. These new definitions satisfy the following two conditions: namely (i) the two-phase viscosity is equal to the liquid viscosity at the mass quality=0% and (ii) the two-phase viscosity is equal to the gas viscosity at the mass quality=100%. These new definitions can be used to compute the two-phase frictional pressure gradient using the homogeneous modeling approach. These new models are assessed using published experimental data of two-phase frictional pressure gradient in circular pipes, minichannels and microchannels in the form of Fanning friction factor (f m) versus Reynolds number (Re m). The published data include different working fluids such as R-12, R-22, argon (R740), R717, R134a, R410A and propane (R290) at different diameters and different saturation temperatures. Models are assessed on the basis minimizing the root mean square error (e RMS). It is shown that these new definitions of two-phase viscosity can be used to analyze the experimental data of two-phase frictional pressure gradient in circular pipes, minichannels and microchannels using simple friction models. [Copyright &y& Elsevier] |
| Copyright of Experimental Thermal & Fluid Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 34649081 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effective property models for homogeneous two-phase flows – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Awad%2C+M%2EM%2E%22">Awad, M.M.</searchLink><i> awad@engr.mun.ca</i><br /><searchLink fieldCode="AR" term="%22Muzychka%2C+Y%2ES%2E%22">Muzychka, Y.S.</searchLink><relatesTo>1</relatesTo><i> yuri@engr.mun.ca</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Experimental+Thermal+%26+Fluid+Science%22">Experimental Thermal & Fluid Science</searchLink>. Oct2008, Vol. 33 Issue 1, p106-113. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Science%22">Science</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphase+flow%22">Multiphase flow</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Two-phase+flow%22">Two-phase flow</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Using an analogy between thermal conductivity of porous media and viscosity in two-phase flow, new definitions for two-phase viscosity are proposed. These new definitions satisfy the following two conditions: namely (i) the two-phase viscosity is equal to the liquid viscosity at the mass quality=0% and (ii) the two-phase viscosity is equal to the gas viscosity at the mass quality=100%. These new definitions can be used to compute the two-phase frictional pressure gradient using the homogeneous modeling approach. These new models are assessed using published experimental data of two-phase frictional pressure gradient in circular pipes, minichannels and microchannels in the form of Fanning friction factor (f m) versus Reynolds number (Re m). The published data include different working fluids such as R-12, R-22, argon (R740), R717, R134a, R410A and propane (R290) at different diameters and different saturation temperatures. Models are assessed on the basis minimizing the root mean square error (e RMS). It is shown that these new definitions of two-phase viscosity can be used to analyze the experimental data of two-phase frictional pressure gradient in circular pipes, minichannels and microchannels using simple friction models. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Experimental Thermal & Fluid Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.expthermflusci.2008.07.006 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 106 Subjects: – SubjectFull: Science Type: general – SubjectFull: Multiphase flow Type: general – SubjectFull: Fluid dynamics Type: general – SubjectFull: Two-phase flow Type: general Titles: – TitleFull: Effective property models for homogeneous two-phase flows Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Awad, M.M. – PersonEntity: Name: NameFull: Muzychka, Y.S. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2008 Type: published Y: 2008 Identifiers: – Type: issn-print Value: 08941777 Numbering: – Type: volume Value: 33 – Type: issue Value: 1 Titles: – TitleFull: Experimental Thermal & Fluid Science Type: main |
| ResultId | 1 |
