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Microgravity flow regime data and analysis

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Title: Microgravity flow regime data and analysis
Authors: Valota, Luca1 l_valota@hotmail.com, Kurwitz, Cable1 kurwitz@tamu.edu, Shephard, Adam1 shephard@tamu.edu, Best, Frederick1,2 fbest@tamu.edu
Source: International Journal of Multiphase Flow. Nov2007, Vol. 33 Issue 11, p1172-1185. 14p.
Subjects: Reduced gravity environments, Fluid dynamics, Multiphase flow, Pressure
Abstract: Abstract: To utilize the advantageous properties of two-phase flow in microgravity applications, the knowledge base of two-phase flow phenomena must be extended to include the effects of gravity. In the experiment described, data regarding the behavior of two-phase flow in a conduit under microgravity conditions (essentially zero gravity) are explored. Of particular interest, knowledge of the void fraction of the gas and liquid in a conduit is necessary to develop models for heat and mass transfer, pressure drop, and wall shear. An experiment was conducted under reduced gravity conditions to collect data by means of a capacitance void fraction sensor and high speed visual imagery. Independent parameters were varied to map the flow regime regions. These independent parameters include gas and liquid volumetric flow rates and saturation pressures. Void fraction measurements were taken at a rate of 100Hz with six sensors at two locations along the conduit. Further, statistical parameters were developed from the void fraction measurements. Statistical parameters such as variance, signal-to-noise ratio, half height value, and linear area difference were calculated and found to have characteristics allowing flow regime identification. [Copyright &y& Elsevier]
Copyright of International Journal of Multiphase Flow is the property of Pergamon Press - An Imprint of Elsevier Science 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
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Header DbId: egs
DbLabel: Engineering Source
An: 27244063
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Microgravity flow regime data and analysis
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  Data: <searchLink fieldCode="AR" term="%22Valota%2C+Luca%22">Valota, Luca</searchLink><relatesTo>1</relatesTo><i> l_valota@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Kurwitz%2C+Cable%22">Kurwitz, Cable</searchLink><relatesTo>1</relatesTo><i> kurwitz@tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Shephard%2C+Adam%22">Shephard, Adam</searchLink><relatesTo>1</relatesTo><i> shephard@tamu.edu</i><br /><searchLink fieldCode="AR" term="%22Best%2C+Frederick%22">Best, Frederick</searchLink><relatesTo>1,2</relatesTo><i> fbest@tamu.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Multiphase+Flow%22">International Journal of Multiphase Flow</searchLink>. Nov2007, Vol. 33 Issue 11, p1172-1185. 14p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Reduced+gravity+environments%22">Reduced gravity environments</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphase+flow%22">Multiphase flow</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure%22">Pressure</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: To utilize the advantageous properties of two-phase flow in microgravity applications, the knowledge base of two-phase flow phenomena must be extended to include the effects of gravity. In the experiment described, data regarding the behavior of two-phase flow in a conduit under microgravity conditions (essentially zero gravity) are explored. Of particular interest, knowledge of the void fraction of the gas and liquid in a conduit is necessary to develop models for heat and mass transfer, pressure drop, and wall shear. An experiment was conducted under reduced gravity conditions to collect data by means of a capacitance void fraction sensor and high speed visual imagery. Independent parameters were varied to map the flow regime regions. These independent parameters include gas and liquid volumetric flow rates and saturation pressures. Void fraction measurements were taken at a rate of 100Hz with six sensors at two locations along the conduit. Further, statistical parameters were developed from the void fraction measurements. Statistical parameters such as variance, signal-to-noise ratio, half height value, and linear area difference were calculated and found to have characteristics allowing flow regime identification. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Multiphase Flow is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=27244063
RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.ijmultiphaseflow.2007.03.002
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 1172
    Subjects:
      – SubjectFull: Reduced gravity environments
        Type: general
      – SubjectFull: Fluid dynamics
        Type: general
      – SubjectFull: Multiphase flow
        Type: general
      – SubjectFull: Pressure
        Type: general
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      – TitleFull: Microgravity flow regime data and analysis
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            NameFull: Valota, Luca
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            NameFull: Kurwitz, Cable
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            NameFull: Shephard, Adam
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            NameFull: Best, Frederick
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            – D: 01
              M: 11
              Text: Nov2007
              Type: published
              Y: 2007
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              Value: 03019322
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              Value: 33
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            – TitleFull: International Journal of Multiphase Flow
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