Turbulent Heat Transfer in a Tube with Twisted Tape under a Magnetic Field

Thermohydraulic behavior of electrically conducting turbulent flow in a pipe with full-length twisted tape insertion under magnetic field is investigated numerically. When the magnetic field is applied to a normal turbulent pipe flow, velocity fluctuation is damped and heat transfer performance is d...

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Bibliographic Details
Published inFusion science and technology Vol. 56; no. 2; pp. 1033 - 1037
Main Authors Yokomine, T., Ebara, S., Satake, S., Kunugi, T.
Format Journal Article
LanguageEnglish
Published La Grange Park, II Taylor & Francis 01.08.2009
American Nuclear Society
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
Theoretical studies. Data and constants. Metering
Fluctuations
Turbulent flow
Nusselt number
Tube
Pipe flow
Thermohydraulics
Flow velocity
Performance
Magnetic field
Heat transfer
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Summary:Thermohydraulic behavior of electrically conducting turbulent flow in a pipe with full-length twisted tape insertion under magnetic field is investigated numerically. When the magnetic field is applied to a normal turbulent pipe flow, velocity fluctuation is damped and heat transfer performance is decreased. As for the turbulent pipe flow with a twisted tape, however, decrease in Nusselt number due to the applied magnetic field is less than that in the normal pipe, because the helical flow structure made by the twisted tape is hardly suppressed under the magnetic field. Therefore, it can be concluded that the twisted tape is effective scheme for heat transfer enhancement under the magnetic field.
ISSN:1536-1055
1943-7641
DOI:10.13182/FST09-A9047