AVERAGING THEORY FOR THE STRUCTURE OF HYDRAULIC JUMPS AND SEPARATION IN LAMINAR FREE-SURFACE FLOWS

Authors
BOHR T PUTKARADZE V WATANABE S
Citation
T. Bohr et al., AVERAGING THEORY FOR THE STRUCTURE OF HYDRAULIC JUMPS AND SEPARATION IN LAMINAR FREE-SURFACE FLOWS, Physical review letters, 79(6), 1997, pp. 1038-1041
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
79
Issue
6
Year of publication
1997
Pages
1038 - 1041
Database
ISI
SICI code
0031-9007(1997)79:6<1038:ATFTSO>2.0.ZU;2-D
Abstract
We present a simple viscous theory of free-surface flows in boundary l ayers, which can accommodate regions of separated flow. In particular, this yields the structure of stationary hydraulic jumps, both in thei r circular and linear versions, as well as structures moving with a co nstant speed. Finally, we show how the fundamental hydraulic concepts of subcritical and supercritical flow, originating from inviscid theor y, emerge at intermediate length scales in our model.