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Updated: Aug 16, 2026

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
Published on: February 3, 2014
Synthesis and analysis of linear and nonlinear acoustical vortices
Régis Marchiano1, Jean-Louis Thomas
1Laboratoire de Modélisation en Mécanique (UMR CNRS 7607), Université Pierre et Marie Curie 4, place Jussieu, 75252 Paris Cedex 05, France. marchi@lmm.jussieu.fr
Abstract:
Acoustical screw dislocations are synthesized in various configurations with a versatile experimental setup. The experimental setup is based on the inverse filter technique and allows one to synthesize one or more acoustical vortices with a chosen width, position, and topological charge. An interesting feature of this experimental facility to study screw dislocation behavior is the direct measurement in amplitude and phase. This characteristic is used to develop an original method of decomposition of an acoustical vortex field in order to analyze the acoustical vortices. Moreover, the behaviors of two acoustical vortices of the same or opposite charge have been studied experimentally and compared to theoretical laws.
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