Measurement of interfacial distortions at a stratified entrainment interface

✍ Scribed by I. P. D. Silva; L. Montenegro; H. J. S. Fernando

• Book ID: 104655888
• Publisher: Springer
• Year: 1990
• Tongue: English
• Weight: 380 KB
• Volume: 9
• Category: Article
• ISSN: 0723-4864
• DOI: 10.1007/bf00187419

✦ Synopsis

A laser beam scanning technique was used to measure the rms amplitude ~5 of the largest wave (interfacial distortion) that is present at the entrainment interface of a stratified fluid. Both linearly-stratified and two-layer fluid systems, subjected to entrainment by oscillating-grid induced shear-free turbulence, are considered. The measurements were found to be in general agreement with a theory due to Long (1978), which predicts 6/D e ~ Ri-3/4, where D e is the mean thickness of the mixed layer and Ri is the appropriately defined bulk Richardson number at the interface.