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Single Wavelength Shadow Imaging of Caenorhabditis elegans Locomotion Including Force Estimates
Published on: April 19, 2014
Critical wavelength for river meandering
1National Energy Technology Laboratory, U. S. Department of Energy, 3610 Collins Ferry Road, Morgantown, WV 26507-0880, USA.
Abstract:
A fully nonlinear modal analysis identifies a critical centerline wave number q(c) for river meandering that separates long-wavelength bends, which grow to cutoff, from short-wavelength bends, which decay. Exact, numerical, and approximate analytical results for q(c) rely on the Ikeda, Parker, and Sawai [J. Fluid Mech. 112, 363 (1981)] model, supplemented by dynamical equations that govern the river migration and length. Predictions also include upvalley bend migration at long times and a peak in lateral migration rates at intermediate times. Experimental tests are suggested.
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