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Oscillatory flow and temperature fields in an open tube with temperature difference across the ends
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Rajan, Ashwin T., Narasimham, G. S. V. L. and Jacob, Subhash (2011) Oscillatory flow and temperature fields in an open tube with temperature difference across the ends. International Journal of Heat and Mass Transfer, 54 (15-16). pp. 3357-3368. doi:10.1016/j.ijheatmasstransfer.2011.03.050 ISSN 0017-9310.
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Official URL: http://dx.doi.org/10.1016/j.ijheatmasstransfer.201...
Abstract
The oscillating flow and temperature field in an open tube subjected to cryogenic temperature at the cold end and ambient temperature at the hot end is studied numerically. The flow is driven by a time-wise sinusoidally varying pressure at the cold end. The conjugate problem takes into account the interaction of oscillatory flow with the heat conduction in the tube wall. The full set of compressible flow equations with axisymmetry assumption are solved with a pressure correction algorithm. Parametric studies are conducted with frequencies of 5–15 Hz, with one end maintained at 100 K and other end at 300 K. The flow and temperature distributions and the cooldown characteristics are obtained. The frequency and pressure amplitude have negligible effect on the time averaged Nusselt number. Pressure amplitude is an important factor determining the enthalpy flow through the solid wall. The frequency of operation has considerable effect on penetration of temperature into the tube. The density variation has strong influence on property profiles during cooldown. The present study is expected to be of interest in applications such as pulse tube refrigerators and other cryocoolers, where oscillatory flows occur in open tubes.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QC Physics T Technology > TP Chemical technology |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||||
Library of Congress Subject Headings (LCSH): | Heat -- Transmission, Refrigeration and refrigerating machinery, Unsteady flow (Fluid dynamics) , Nusselt number | ||||||||||
Journal or Publication Title: | International Journal of Heat and Mass Transfer | ||||||||||
Publisher: | Pergamon-Elsevier Science Ltd. | ||||||||||
ISSN: | 0017-9310 | ||||||||||
Official Date: | 2011 | ||||||||||
Dates: |
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Volume: | 54 | ||||||||||
Number: | 15-16 | ||||||||||
Page Range: | pp. 3357-3368 | ||||||||||
DOI: | 10.1016/j.ijheatmasstransfer.2011.03.050 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||
Date of first compliant deposit: | 6 September 2016 | ||||||||||
Date of first compliant Open Access: | 6 September 2016 |
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