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 7 → 2008 1 10 |
Other
| Other | 46th AIAA Aerospace Sciences Meeting and Exhibit |
|---|---|
| 市 | Reno, NV |
| 期間 | 08/1/7 → 08/1/10 |
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ASJC Scopus subject areas
- Aerospace Engineering
これを引用
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
}
TY - GEN
T1 - Chemical flow control method using combination of hydrophobic and hydrophilic coatings
AU - Sakaue, Hirotaka
AU - Morita, Katsuaki
AU - Goto, Mineo
AU - Shimizu, Megumi
AU - Hyakutake, Tsuyoshi
AU - Nishide, Hiroyuki
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=78149445559&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78149445559&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78149445559
SN - 9781563479373
BT - 46th AIAA Aerospace Sciences Meeting and Exhibit
ER -