This study is devoted to the instantaneous acoustic heating of a shear-thinning fluid. Apparent viscosity of a shear-thinning fluid depends on the shear rate. That feature distinguishes it from a viscous Newtonian fluid. The special linear combination of conservation equations in the differential form makes it possible to derive dynamic equations governing both the sound and non-wave entropy mode induced in the field of sound. These equations are valid in a weakly nonlinear flow of a shear-thinning fluid over an unbounded volume. They both are instantaneous, and do not require a periodic sound. An example of a sound waveform with a piecewise constant shear rate is considered as a source of acoustic heating.

JO - Archives of Acoustics L1 - http://sp.czasopisma.pan.pl/Content/104434/PDF/10_paper.pdf L2 - http://sp.czasopisma.pan.pl/Content/104434 IS - No 3 EP - 642 KW - acoustic heating KW - non-Newtonian liquids KW - shear-thinning fluid ER - A1 - Perelomova, Anna PB - Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society VL - vol. 36 JF - Archives of Acoustics SP - 629 T1 - Acoustic Heating Produced in the Thermoviscous Flow of a Shear-Thinning Fluid UR - http://sp.czasopisma.pan.pl/dlibra/docmetadata?id=104434 DOI - 10.2478/v10168-011-0044-6