Browse > Article
http://dx.doi.org/10.5139/JKSAS.2009.37.12.1165

Measurement of the Laminar Boundary Layer in a Streamwise Corner by using PIV Technique  

Park, Dong-Hun (KAIST 항공우주공학과 대학원)
Park, Seung-O (KAIST 항공우주공학과)
Kwon, Ki-Jung (한국항공우주연구원 공력구조팀)
Shim, Ho-Joon (한국항공우주연구원 공력구조팀)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.37, no.12, 2009 , pp. 1165-1172 More about this Journal
Abstract
The laminar boundary layer along a streamwise corner formed by two flat plates intersecting at right angle is measured by using Particle Image Velocimetry(PIV) technique. The free stream velocity ranges from 2.96m/s to 3.0m/s. The angle of incidence of the corner is set to 1.2 degree providing slightly favourable pressure gradient to ensure a laminar flow in the corner region. A round shape leading edge is used and the length of the model is about 1000mm. In the bisector plane, the measurement data show separation type velocity profiles having an inflection point which is a typical characteristic of laminar corner boundary layers. As the distance away from the bisector plane increases, velocity profiles are found to change into the Blasius profile. The change completes around half length of the boundary layer thickness in the bisector plane away from the bisector plane along the plate. In the bisector plane, the growth characteristic of the boundary layer thickness and the approximate similarity of velocity profiles are confirmed from the measurement data.
Keywords
Particle Image Velocimetry(PIV); Corner Layer; Laminar Boundary Layer;
Citations & Related Records
연도 인용수 순위
  • Reference
1 M. Zamir, "Similarity and Stability of the Laminar Boundary Layer in a Streamwise Corner", Proc. R Soc. Lond. A, Vol. 377, No. 1770, pp. 269-288, 1981   DOI
2 M. Zamir & A.D. Young, "Experimental Investigation of the Boundary Layer in a Streamwise Corner", Aeronautical Quarterly, Vol.21, Pt.4, pp. 313-339, 1970.
3 H.A. El-Gamal & W.H. Barclay, "Experiments on the Laminar Flow in a Rectangular Streamwise Corner", Aeronautical Quarterly, Vol.29, pp. 75-97, 1978.   DOI
4 M. Zamir & A.D. Young, "Pressure Gradient and Leading Edge Effect on the Corner Boundary Layer", Aeronautical Quarterly, Vol. 30, pp. 471-484,1979.   DOI
5 S.G. Rubin & B.Grossman, "Viscous Flow Along a Corner : Part I Numerical Solution of Corner Layer Equation", Quart. Appl. Math., Vol.29, No.2, pp. 169-186, 1971.   DOI
6 S.S. Desai, & K.W. Mangler, "Incompressilbe Laminar Boundary Layer Flow Along a Corner Formed by Two Intersecting Planes", RAE Technical Report 74062, pp. 1-99,1974.