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NUMERICAL PREDICTION OF LAMINAR-FLOW AND HEAT-TRANSFER CHARACTERISTICS IN A TUBE FITTED WITH REGULARLY SPACED TWISTED-TAPE ELEMENTS

DSpace at IIT Bombay

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Title NUMERICAL PREDICTION OF LAMINAR-FLOW AND HEAT-TRANSFER CHARACTERISTICS IN A TUBE FITTED WITH REGULARLY SPACED TWISTED-TAPE ELEMENTS
 
Creator DATE, AW
SAHA, SK
 
Subject laminar flow
circular tube
twisted-tape elements
forced convection
 
Description By numerically solving the Navier-Stokes and energy equations in their three-dimensional parabolic form, the friction and heat transfer characteristics are predicted for laminar flow in a circular tube fitted with regularly spaced twisted-tape elements that are connected by circular rods. The predictions have agreed closely with the experimental data for water. It is shown that a strong L/D effect is associated with the configuration under consideration. By extending the predictions outside the range of experimental data, it is found that considerably enhanced thermohydraulic performance is achievable by increasing the number of turns on the tape elements, by reducing the connecting rod diameter, and at high fluid Prandtl numbers.
 
Publisher BUTTERWORTH-HEINEMANN
 
Date 2011-07-19T07:08:35Z
2011-12-26T12:51:03Z
2011-12-27T05:37:23Z
2011-07-19T07:08:35Z
2011-12-26T12:51:03Z
2011-12-27T05:37:23Z
1990
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 11(4), 346-354
0142-727X
http://dx.doi.org/10.1016/0142-727X(90)90058-J
http://dspace.library.iitb.ac.in/xmlui/handle/10054/5207
http://hdl.handle.net/10054/5207
 
Language en