Abstract
In this talk Professor Paul Linden will discuss his work studying a unique experiment called the Stratified Inclined Duct (SID). SID involves two fluid layers of different densities flowing in a tilted duct. Depending on how steep the tilt and the flow speed are, observations of four different behaviours are made: smooth flow, wavy patterns on the layer interface, intermittent bursts of turbulence, and continuous turbulence. This allows for better understanding of how well fluids mix, which is important for ocean and climate models.
One key focus is the efficiency of mixing in stable stratification, where lighter fluid needs to be pushed down while denser fluid rises. This mixing efficiency affects the flow’s energy. Professor Linden’s work examines how turbulence organises itself, reaching a specific state with consistent properties. He also studies energy budgets and mixing statistics, comparing them to existing models and literature.
For a technical abstract, please see Cassyni.
About the Aerodynamics & Control Seminar Series
The Aerodynamics & Control Seminars, hosted by the Department of Aeronautics, are a series of talks by internationally renowned academics covering a broad range of topics in fluid mechanics, control, and the intersection of these two areas.