The two-dimensional laminar wall jet. Velocity measurements compared with similarity theory

被引：4

作者：

Peters, F. ^{[1
]}

Ruppel, C. ^{[1
]}

Javili, A. ^{[1
]}

Kunkel, T. ^{[1
]}

机构：

[1] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

FORSCHUNG IM INGENIEURWESEN-ENGINEERING RESEARCH | 2008年 / 72卷 / 01期

关键词：

wall jet; velocity measurements; boundary layer;

D O I：

10.1007/s10010-007-0064-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The flow past a flat plate, the free jet and the wall jet, all laminar and two-dimensional, are unidirectional momentum driven flows with no (first order) pressure gradients. As such they satisfy the boundary layer equations and provide self-similar solutions of the velocity field at some distance downstream from their real sources. This work presents velocity field measurements for the wall jet which is realized as an annulus jet about a cylinder for experimental benefits. The velocity fields are exploited for the wall normal profiles and in particular for the virtual origin of the similarity coordinates. The original similarity theory by Glauert (1956) is provided in an extended form that allows the direct comparison with the experiments and helps interpreting the similarity character of the wall jet in connection with its source.

引用

页码：19 / 28

页数：10

共 8 条

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FORTHMANN E, 1934, INGENIEUR ARCH BERLI, V5, P42

[2] A similarity theory for the turbulent plane wall jet without external stream [J].