Circulation Control foil의 슬롯 높이에 따른 성능의 수치적 연구

초록

Jet flows applied tangential to a foil surface near the leading and/or trailing edges increase the lift of the foil by delaying separation as already known as the Coanda effects. Many of experimental and numerical studies have proven the effectiveness of Coanda effects and the effects have found practical application in many of aerodynamics fields. In the present paper, a Coanda foil of 20% thickness ellipse with modified rounded leading and trailing edges has been numerically studied. The results are compared to those of a couple of the experimental and numerical studies. It is shown that variations in slot heights affect lift and drag characteristics considerably even when jet momentum remains constant.