대한기계학회논문집 (Transactions of the Korean Society of Mechanical Engineers)
- 제13권4호
- /
- Pages.780-788
- /
- 1989
- /
- 1225-5963(pISSN)
DOI QR Code
박리-재부착 이후의 재발달 난류경계층 I
Readeveloping Turbulent Boundary Layer after Separation-Reattachment(I)
- 발행 : 1989.07.01
초록
본 연구에서는 재부착 이후의 재발달 난류경계층에서의 난류구조와 비평형 상태에서 평형상태로의 변화 과정을 실험적으로 고찰하고자 한다.
An experimental study has been performed to investigate the process from nonequilibrium state to equilibrium state in redeveloping turbulent boundary layer beyond separation-reattachment using pitot tube and hot-wire anemometer. The model sued in the experiment has the form of a backward facing step which is assembled by a two-dimensional 4:1 half elipse and a plate. Measurements are carried out up to a distance of about 50 step height downstream of the step, where the reattachment observed at about x/h=6.5. The profiles of the shape factor H the Clauser parameter G and the coefficient of friction
키워드