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Transition to turbulence in stratified shear flow through an inclined square duct

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We describe experiments on buoyancy-driven shear flow in an inclined duct. The duct connects two reservoirs containing fluids of different densities and the exchange flow along the duct produces a shear flow whose properties depend on the density difference and the angle of inclination. We explore the various flow regimes and determine the critical condition for the transition from the turbulent to intermittent regime.

Author(s):

Colin R. Meyer    
University of Cambridge
United Kingdom

Paul F. Linden    
University of Cambridge
United Kingdom