boundary layer

Wednesday, March 28, 2018 - 9:40am - 10:10am
Xiang Cheng (University of Minnesota, Twin Cities)
We investigate the dynamics of drop impacts on dry solid surfaces. By synchronizing high-speed photography with fast force sensing, we simultaneously measure the temporal evolution of the shape and impact force of impacting drops over a wide range of Reynolds numbers (Re). At high Re, we show that the early-time evolution of impact force follows a square-root scaling, quantitatively agreeing with a recent self-similar theory.
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