@Article{hmt.18.29,
AUTHOR = {Shintaro Hayakawa
, Takashi Fukue
, Yasuhiro Sugimoto
, Wakana Hiratsuka
, Hidemi Shirakawa
, Yasushi Koito},
TITLE = {EFFECT OF RIB HEIGHT ON HEAT TRANSFER ENHANCEMENT BY COMBINATION OF A RIB AND PULSATING FLOW},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {18},
YEAR = {2022},
NUMBER = {1},
PAGES = {1--9},
URL = {http://www.techscience.com/fhmt/v18n1/52460},
ISSN = {2151-8629},
ABSTRACT = {This paper describes the effects of a combination of rib and pulsating flow on heat transfer enhancement in an mm-scale model that simulates the 
narrow flow passages in cooling devices of downsized electronic equipment. This research aims to develop a novel water cooling device that increases 
heat transfer performance while inhibiting pumping power. Our recent study has reported that a combination of pulsating flow and rib could enhance 
heat transfer performance relative to the simple duct. In the present study, to verify the optimal rib height for improving heat transfer by pulsating flow, 
we evaluated the relationship between heat transfer performance of pulsating flow and rib height through three-dimensional computational fluid 
dynamics (CFD) analysis. The cooling performance index  was calculated to evaluate the improvement of the heat transfer performance of pulsating 
flow relative to a steady flow. Higher height ribs help to achieve higher heat transfer performance regardless of the flow pulsation. However, pressure 
drop also increases significantly, and the level of the heat transfer enhancement by the higher ribs is dependent on the time-averaged Reynolds number. 
By evaluating the cooling performance index, we clarified the optimum rib height that can enhance heat transfer while inhibiting the increase of the 
pressure drop.},
DOI = {10.5098/hmt.18.29}
}