Chemical flow control method using combination of hydrophobic and hydrophilic coatings

Hirotaka Sakaue, Katsuaki Morita, Mineo Goto, Megumi Shimizu, Tsuyoshi Hyakutake, Hiroyuki Nishide

研究成果: Conference contribution

抄録

A chemical flow control method using functional chemical is discussed. The method uses functional chemicals, which have hydrophobic and hydrophilic characteristics. A passive flow control of this method is shown by coating these chemicals separately on a control surface. Drop tests of an ogive shape model in water tower show that combinations of hydrophobic and hydrophilic coatings vary the speed in dropping direction by the maximum 22%. By controlling the coating area and coating location, intermediate speeds are obtained. As an active flow control, a temperature-sensitive micelle polymer is shown. This polymer is hydrophobic at higher temperature, while it is hydrophilic at lower temperature. The temperature range tested is from 25°C to 64°C. The rate of change in contact angle is ranged from 0.9 degree/°C to 1.6 degree/°C.

元の言語English
ホスト出版物のタイトル46th AIAA Aerospace Sciences Meeting and Exhibit
出版物ステータスPublished - 2008
イベント46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV
継続期間: 2008 1 72008 1 10

Other

Other46th AIAA Aerospace Sciences Meeting and Exhibit
Reno, NV
期間08/1/708/1/10

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Flow control
Coatings
Water towers
Temperature
Control surfaces
Polymers
Micelles
Contact angle

ASJC Scopus subject areas

  • Aerospace Engineering

これを引用

Sakaue, H., Morita, K., Goto, M., Shimizu, M., Hyakutake, T., & Nishide, H. (2008). Chemical flow control method using combination of hydrophobic and hydrophilic coatings. : 46th AIAA Aerospace Sciences Meeting and Exhibit [2008-0632]

Chemical flow control method using combination of hydrophobic and hydrophilic coatings. / Sakaue, Hirotaka; Morita, Katsuaki; Goto, Mineo; Shimizu, Megumi; Hyakutake, Tsuyoshi; Nishide, Hiroyuki.

46th AIAA Aerospace Sciences Meeting and Exhibit. 2008. 2008-0632.

研究成果: Conference contribution

Sakaue, H, Morita, K, Goto, M, Shimizu, M, Hyakutake, T & Nishide, H 2008, Chemical flow control method using combination of hydrophobic and hydrophilic coatings. : 46th AIAA Aerospace Sciences Meeting and Exhibit., 2008-0632, 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, 08/1/7.
Sakaue H, Morita K, Goto M, Shimizu M, Hyakutake T, Nishide H. Chemical flow control method using combination of hydrophobic and hydrophilic coatings. : 46th AIAA Aerospace Sciences Meeting and Exhibit. 2008. 2008-0632
Sakaue, Hirotaka ; Morita, Katsuaki ; Goto, Mineo ; Shimizu, Megumi ; Hyakutake, Tsuyoshi ; Nishide, Hiroyuki. / Chemical flow control method using combination of hydrophobic and hydrophilic coatings. 46th AIAA Aerospace Sciences Meeting and Exhibit. 2008.
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