About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physics of Fluids
Paper
Effects of helicity on Lagrangian and Eulerian time correlations in turbulence
Abstract
Taylor series expansions of turbulent time correlation functions are applied to show that although to second order, helicity does not affect Lagrangian time correlations, the corresponding helicity effect on Eulerian time correlations is nonzero. This result is applied to two problems in which Eulerian time correlations are relevant: sound radiation and scattering by turbulence. Helicity shifts radiated sound to lower frequencies and increases the angle between scattered and incident sound waves. © 1999 American Institute of Physics.