Control of boundary layer by ionic wind for heat transfer

Title
Control of boundary layer by ionic wind for heat transfer
Authors
신동호장동규손동기고한서
Issue Date
2019-03
Publisher
International journal of heat and mass transfer
Citation
VOL 131-195
Abstract
In this study, local convection heat transfer technology was investigated using ionic wind. The characteristics of ionic wind using wire and plate electrodes are studied by experiment and numerical method. A particle image velocimetry (PIV) test was conducted in a wind tunnel to observe the flow behavior by the ionic wind on the heated surface. A new boundary layer was formed on the heated surface which was controlled by the ionic wind, regardless of the Reynolds number of bulk flow. The surface averaged heat transfer coefficient with the ionic wind increased by 11% at low Reynolds number (100– 200) and decreased by 19% at high Reynolds number (2500– 3500). It was also found that the zigzag type of wire arrangement enhanced the heat transfer coefficient by 40% compared with the single wire. It is thus concluded that ionic wind can be used for enhancing the convection heat transfer rate or insulating the local surface according to its operating condition.
URI
http://pubs.kist.re.kr/handle/201004/69201
ISSN
00179310
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KIST Publication > Article
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