{ "id": "2210.10878", "version": "v1", "published": "2022-10-19T20:37:23.000Z", "updated": "2022-10-19T20:37:23.000Z", "title": "On the exponential decay in time of solutions to a~generalized Navier-Stokes-Fourier system", "authors": [ "Anna Abbatiello", "Miroslav Bulíček", "Petr Kaplický" ], "categories": [ "math.AP" ], "abstract": "We consider a non-Newtonian incompressible heat conducting fluid with prescribed nonuniform temperature on the boundary and with the no-slip boundary conditions for the velocity. We assume no external body forces. For the power-law like models with the power law index bigger than $11/5$ in three dimensions, we identify a class of solutions fulfilling the entropy equality and converging to the equilibria exponentially in a proper metric. In fact, we show the existence of a Lyapunov functional for the problem. Consequently, the steady solution is nonlinearly stable and attracts all suitable weak solutions.", "revisions": [ { "version": "v1", "updated": "2022-10-19T20:37:23.000Z" } ], "analyses": { "subjects": [ "35Q30", "35K61", "76E30", "37L15" ], "keywords": [ "exponential decay", "navier-stokes-fourier system", "power law index bigger", "no-slip boundary conditions", "non-newtonian incompressible heat conducting fluid" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }