Papers by Giuseppe Caridi
Experiments in Fluids, 2015
Experiments are conducted with helium-filled soap bubbles (HFSB) in the sub-millimetre diameter r... more Experiments are conducted with helium-filled soap bubbles (HFSB) in the sub-millimetre diameter range in the low speed flow regime to ascertain the aerodynamic behaviour of these tracers for PIV measurements in wind tunnels. The flow-tracing fidelity of HFSB relies on their neutral buoyancy and partly on their relative size to the flow time and length scales. This study follows closely the methodology proposed in an early work by Kerho and Bragg (1994) who investigated the capabilities of HFSB within a steady potential flow close to a stagnation point. The conclusions of the present investigation differ from those drawn in the latter work as it is concluded that HFSB do represent a valid alternative for quantitative velocimetry in wind tunnel aerodynamic experiments.
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Papers by Giuseppe Caridi