Open Access
ARTICLE
CFD-BASED STUDY ON HEAT TRANSFER ENHANCEMENT BEHIND A PROJECTION IN A MINIATURIZED FLOW CHANNEL BY PULSATING FLOW
Wakana Hiratsukaa
, Takashi Fukueb,*, Hidemi Shirakawac, Katsuyuki Nakayamad, Yasushi Koitoe
a Former student, Iwate University, Iwate 020-8551, Japan
b Kanazawa Institute of Technology, Ishikawa 921-8501, Japan
c National Institute of Technology, Toyama College, Toyama 939-8630, Japan
d Toyama 939-0398, Japan
e Kumamoto University, Kumamoto 860-8555, Japan
Frontiers in Heat and Mass Transfer 2020, 15, 1-8. https://doi.org/10.5098/hmt.15.16
Abstract
This paper describes a possibility of heat transfer enhancement in a mm-scale flow channel by using a combination of some projections and pulsating
flow. The objective of this research is to develop a novel heat exchanger for miniaturized productions such as high-density packaging electronic
equipment by applying pulsating flow to enhance heat transfer while inhibiting an increase of pressure drop. In order to evaluate the possibility of
applying pulsating flow to miniature water channels, a three-dimensional flow and heat transfer analysis was performed. Heat transfer performance of
a combination of pulsating water flow and a projection was investigated. The mechanism of heat transfer enhancement by the proposed combination
was also investigated. The proposed combination enhances heat transfer in the channel remarkably. Heat transfer performance of pulsating flow around
the projection was approximately 80% higher than that of steady flow in the channel without the projection. This was caused by the generation of
counter flow behind the projection during the deceleration period. The counter flow ejected heated water near the projection and heat transfer
enhancement is achieved.
Keywords
Cite This Article
Hiratsuka, W., Shirakawa, H., Nakayama, K., Koito, Y. (2020). CFD-BASED STUDY ON HEAT TRANSFER ENHANCEMENT BEHIND A PROJECTION IN A MINIATURIZED FLOW CHANNEL BY PULSATING FLOW.
Frontiers in Heat and Mass Transfer, 15(1), 1–8. https://doi.org/10.5098/hmt.15.16