By Stephen Wong, Zach Stein, Andrei Molchanov, and Nick Stites for Spring 2014 Team First.
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Water droplets at the center of a heated pan exhibit the Leidenfrost effect, where film boiling insulates the droplet. Away from the hottest center, droplets evaporate quickly. Flow (from right to left) over an obstacle in a flume simulates some aspects of the slipstream over a semi tractor trailer.