期刊
EXPERIMENTAL THERMAL AND FLUID SCIENCE
卷 68, 期 -, 页码 733-743出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2015.07.007
关键词
Laminar flow; Forced convection; Wire coil inserts; Helical screw-tape inserts; Heat transfer enhancement; Swirl flow
资金
- UGC
- DST, Government of India
- DST [SR/S3/MERC-0045/2010]
- UGC [41-989/2012(SR)]
Helical screw-tape inserts and wire coil inserts both individually are enhancement techniques. Naturally, therefore, it is worthwhile to try their combinations as a potential enhancement technique. The experimental friction factor and Nusselt number data for laminar flow through a circular duct having helical screw-tape and wire coil inserts have been presented. Predictive friction factor and Nusselt number correlations have also been presented. The thermohydraulic performance has been evaluated. The major findings of this experimental investigation are that the helical screw-tape inserts in combination with wire coil inserts perform significantly better than the individual enhancement technique acting alone for laminar flow through a circular duct up to a certain value of the fin parameter. (C) 2015 Elsevier Inc. All rights reserved.
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