Abstract
This study showed the analysis of heat transfer by computational fluid dynamics (CFD) from a heated target surface by the use of jet of single swirl and impingement by air at various Reynolds numbers. The half-length downstream with insertion of twisted tape is applied in a nozzle body to get the swirl. The distance between twist ratio and nozzle to plate of twisted tape is found to be same as y = 2.93 and 21mm (H/D = 1). The characteristics of transfer of heat on heated surface are determined with varied Reynolds numbers like 12000, 17000, 22000 and 27000.
Highlights
The impingement by jet is latest important technique for enhancement of heat transfer
Various literatures was found on various forms like single and multiple jets with co-relations produced for characteristics of mass and heat transfer connected to this area
These calculations were conducted at Reynolds number 12000 by without insertion of twisted tape and at a distance of jet to plate 2 (H/D=2).These calculations are shown in the table 2
Summary
The impingement by jet is latest important technique for enhancement of heat transfer. Various literatures was found on various forms like single and multiple jets with co-relations produced for characteristics of mass and heat transfer connected to this area. To reduce the limitations of radial non-uniformity different tests were taken by various forms. This problem is solved by introduction of jet in swirl form. Andrea (2012) [5] performed experiments to observe and compare the results of impinging of jets by swirling and multi-channel by the impinging jet of conventional method (CIJ), keeping the radius is same at the similar applications. Different experiments were conducted at same distance between nozzle and plate at L=4D to study the characteristics of flow and transfer of heat by a jet of swirl impingement. It has been found that increase of Nusselt number and betterment in radial uniformity of transfer of heat was found by jet of swirl impingement as compared to impingement of jets by multichannel and conventional impingement of jet
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