This paper describes a new experimental rig for investigations of turbulent sheared convective boundary layers. The rig uses a water flume with fresh and salt water layers that can be driven at different velocities to generate a turbulent boundary layer capped by a free shear layer. Buoyant convection is generated by a third stream of fresh water that enters through the perforated lower surface of the flume. The rig is instrumented with a simultaneous 2D Particle Image Velocimetry (PIV) and Planar Laser Induced Fluorescence (PLIF) system. We describe the operation of the rig and give the ranges of various non-dimensional parameters, relevant dynamical scales, and the spatial and temporal resolution that can be achieved. Some preliminary results demonstrating the capabilities of the rig are also presented.
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