Abstract
The extent of laminar flow at the exit of a nozzle due to favorable pressure gradient, and the influence of heating on the amount of laminar flow present at the nozzle exit, was visualized using a high-resolution, image-motion compensating camera which provides high-speed macrophotography of the exit jet. Photographs are presented which indicate the effect of electrical heating on the extent of laminar flow in the shear layer of two nozzles, 1/10-inch (2.5 mm) and 1/4-inch (6.4 mm) diameter respectively. Other data give the effect of upstream pressure and electrical power input on the visually observed properties of the nozzle exit flow.
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