WHITE-LIGHT SPECKLE VELOCIMETRY APPLIED TO PLANE FREE CONVECTIVE FLOW

The laminar free-convective flow along heated, vertical wall contours of different geometries is measured with a whil.-light speckle velocimetric method. The flow field is nominally two-dimensional (plane), and the experimental method can therefore be applied in the forward-scattering mode. The experiments are performed in a water tank, where tracer particle velocities down to 0.3 mm/s can be resolved. The measurements reveal the existence of dead-water regimes in the corner areas of a vertical wall/half-cylinder configuration.