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Sound damping in ferrofluids: Magnetically enhanced compressional viscosity

Hanns Walter Mueller·Yimin Jiang·Mario Liu
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Abstract

The damping of sound waves in magnetized ferrofluids is investigated and shown to be considerably higher than in the non-magnetized case. This fact may be interpreted as a field-enhanced, effective compressional viscosity -- in analogy to the ubiquitous field-enhanced shear viscosity that is known to be the reason for many unusual behavior of ferrofluids under shear.

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Hanns Walter Mueller, Yimin Jiang, Mario Liu. 2002-11-14. Sound damping in ferrofluids: Magnetically enhanced compressional viscosity. https://doi.org/10.1103/physreve.67.031201

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