Boo Bubbles”, fog filled soap bubbles, rest on black velvet without popping.”

By Patrick Cotter, Matt Bailey, Elizabeth Crumb, Jon Horneber, and Shea Zmerzlikar for Spring 2013 Team First.
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Boo Bubbles”, fog filled soap bubbles, rest on black velvet without popping.”

Water fog from sublimating dry ice forms ‘boo bubbles’ after passing through soapy water.

Flow over an airfoil in a water flume(Re = 40,000), at varied angle of attack, visualized with food dye.

Dyed water flows over a model airfoil in a flume.

Flow over an airfoil in a water flume(Re = 40,000), at varied angle of attack, visualized with bursts of food dye.

Dyed water flows over a model airfoil in a flume.

A mixture of mineral oil and orange fluorescent tracer over fluorescent laundry detergent shows flow over an airfoil in a low speed wind tunnel.

A mixture of mineral oil and orange fluorescent tracer over fluorescent laundry detergent shows flow over an airfoil in a low speed wind tunnel.

Flow over an airfoil in a low speed wind tunnel is shown using oil flowing over fluorescent laundry detergent.

Droplets of fluorescent All laundry detergent and a mixture of oil and a fluorescent tracer were placed linearly across the floor of a low speed wind tunnel.