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Effects of the Gortler vortices on turbulent boundary layer

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 29 Issue 1 Page 143-152
published_at 1978
KJ00000156235.pdf
[fulltext] 764 KB
Title
ゲルトラー渦と境界層の干渉に関する研究
Effects of the Gortler vortices on turbulent boundary layer
Creators Osaka Hideo
Creators Yamada Hidemi
Creators Kuwata Akihiko
Source Identifiers
The interaction between the Gortler vortices originated from an instability of turbulent boundary layer which developed on the contraction wall and the turbulent boundary layer on a measuring flat plate was examined experimentally. For the nominally two-dimensional turbulent boundary layer developing on a plate with three types of leading edge shape, the spatial variations of boundary layer characteristics and the streamwise variation of the spanwise mean values of the time-mean velocity and the fluctuating velocity were measured. The procedure of obliteration of spanwise variations due to the Gortler vortices were also attempt. From these results, it was revealed that the boundary layer exhibited a variation of characteristics in the spanwise direction, and its spatial fluctuating intensity was about (10)^<-2>×U_e. In addition, equilibrium boundary layer was not still realized within the present experimental range, and the spanwise variations of boundary layer characteristics due to the Gortler vortices were able to eliminate by use of the vortex generator.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1978
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部