Premium
Heat transfer enhancement in fin‐plate heat exchangers by wing type vortex generators
Author(s) -
Brockmeier Udo,
Fiebig Martin,
Güntermann Thomas,
Mitra Nimai K.
Publication year - 1989
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270120140
Subject(s) - vortex generator , heat transfer enhancement , vortex , heat transfer , mechanics , delta wing , fin , laminar flow , wingtip device , heat exchanger , materials science , plate heat exchanger , micro heat exchanger , thermodynamics , horseshoe vortex , dynamic scraped surface heat exchanger , heat transfer coefficient , physics , composite material , critical heat flux , vortex ring , aerodynamics
Heat transfer and fluid mechanical data were computed for laminar channel flows containing strong longitudinal vortex pairs. The strong vortices are generated by thin delta wings and delta winglet pairs of low aspect ratios and large angles of attack. These wings are attached to the channel walls. The data show that longitudinal vortices cause high local peaks in heat transfer and marked increases in the overall channel heat transfer. These increases occur over a wide region of channel wall, compared to the vortex generating wing area. The results are of special interest for compact heat exchangers. The heat transfer enhancement allows a considerable reduction in the heat transfer area which, in turn, reduces the manufacturing and operating costs.