Mixing Characteristics of a Transitional Stratified Two-Layer Flow

by Chia-fu Liu, Univ of California, Berkeley, United States,
Feng Wen, Univ of California, Berkeley, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Small scale structures in a stably stratified two-layer flow are investigated. The flow configuration has the initial velocity interface displaced with respect to the density interface. The small scale and the large scale interaction results in a slowly evolving flow state in which turbulence dominates the high velocity layer and the internal wave dominates the low velocity layer. The gradient Richardson number is a relevant parameter for characterizing these regions.



Subject Headings: Stratified flow | Density currents | Wave velocity | Shear flow | Turbulent flow | Turbulence | Internal waves

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