Excellence in Research and Innovation for Humanity
%0 Journal Article
%A M. Kito and  M. Takezaki and  T. Shakouchi and  K. Tsujimoto and  T. Ando
%D 2012 
%J  International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering
%B World Academy of Science, Engineering and Technology
%I International Science Index 68, 2012
%T Enhancement of Impingement Heat Transfer on a Flat Plate with Ribs
%U http://waset.org/publications/4551
%V 68
%X Impinging jets are widely used in industrial cooling
systems for their high heat transfer characteristics at stagnation points.
However, the heat transfer characteristics are low in the downstream
direction. In order to improve the heat transfer coefficient further
downstream, investigations introducing ribs on jet-cooled flat plates
have been conducted. Most studies regarding the heat-transfer
enhancement using a rib-roughened wall have dealt with the rib pitch.
In this paper, we focused on the rib spacing and demonstrated that the
rib spacing must be more than 6 times the nozzle width to improve heat
transfer at Reynolds number Re=5.0×103 because it is necessary to
have enough space to allow reattachment of flow behind the first rib.
%P 1615 - 1621