Numerical Study on Receptivity of Flat-Plate Boundary Layer to External Disturbances

Numerical studies were carried out to investigate the flat-plate boundary layer receptivity to vorticity disturbances. The disturbances were introduced indirectly as a wall boundary condition. As a result, it is shown that only the low wavenumber fluctuations in the freestream could generate the vor...

Full description

Saved in:
Bibliographic Details
Published inTheoretical and Applied Mechanics Japan Vol. 62; pp. 3 - 12
Main Authors NORO, Shuta, SHIGETA, Masaya, IZAWA, Seiichiro, FUKUNISHI, Yu
Format Journal Article
LanguageEnglish
Published Tokyo National Committee for IUTAM 2014
Japan Science and Technology Agency
Online AccessGet full text

Cover

More Information
Summary:Numerical studies were carried out to investigate the flat-plate boundary layer receptivity to vorticity disturbances. The disturbances were introduced indirectly as a wall boundary condition. As a result, it is shown that only the low wavenumber fluctuations in the freestream could generate the vorticity pattern on the wall. It is also shown that the interaction between the streamwise vortices and the boundary layer promotes the rapid growth of the velocity fluctuations.
ISSN:1348-0693
1349-4244
DOI:10.11345/nctam.62.3