Numerical study on receptivity of flat-plate boundary layer to external disturbances

Shuta Noro; Masaya Shigeta; Seiichiro Izawa; Yu Fukunishi

doi:10.11345/nctam.62.3

Numerical study on receptivity of flat-plate boundary layer to external disturbances

Shuta Noro, Masaya Shigeta, Seiichiro Izawa, Yu Fukunishi

ENG - Mechanical Systems Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	3-12
Number of pages	10
Journal	Theoretical and Applied Mechanics Japan
Volume	62
DOIs	https://doi.org/10.11345/nctam.62.3
Publication status	Published - 2014 Jan 1

ASJC Scopus subject areas

Mathematics(all)
Condensed Matter Physics
Mechanics of Materials

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10.11345/nctam.62.3

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abstract = "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.",

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Y1 - 2014/1/1

N2 - 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.

AB - 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.

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Numerical study on receptivity of flat-plate boundary layer to external disturbances

Abstract

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