Properties of a Turbulence Wedge Which Develops from a Single Roughness Element in a Flat Plate Laminar Boundary Layer.
Bibliographic Information
- Other Title
-
- 平板層流境界層内の単一突起から発達する乱流くさびの特性
- ヘイバン ソウリュウ キョウカイソウ ナイ ノ タンイツ トッキ カラ ハッタツ スル ランリュウクサビ ノ トクセイ
Search this article
Abstract
A turbulence wedge that develops downstream from a single roughness element placed in a laminar boundary layer on a flat plate was experimentally investigated. Streamwise vortices, development mechanisms of the wedge in the wall-normal and spanwise directions and development process of the turbulent quantities in the downstream were clarified. Many streamwise vortices appear within the wedge just behind the roughness. Further downstream, on the other hand, a pair of streamwise vortices are found on both interfaces between the wedge and the outer laminar region. The development mechanism of the wedge in the spanwise direction may be governed by the streamwise vortices ; the mechanism in the spanwise direction is different from that in the wall-normal direction. The fluctuating velocities and the Reynolds stresses just behind the roughness are larger than those of the developed turbulent boundary layer because of the many streamwise vortices. Further downstream, they more closely resemble those in the developed turbulent boundary layer.
Journal
-
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
-
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 67 (660), 1983-1989, 2001
The Japan Society of Mechanical Engineers
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282681159542400
-
- NII Article ID
- 110002397707
- 130004224288
-
- NII Book ID
- AN00187441
-
- ISSN
- 18848346
- 03875016
- http://id.crossref.org/issn/03875016
-
- NDL BIB ID
- 5888526
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed