2026-04-17T17:29:04Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1219852026-01-15T05:25:37Zcom_2072_1033col_2072_452950

Spatial decay in transient heat conduction for general elongated regions Knops, Robin J. Quintanilla de Latorre, Ramón Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències Heat--Conduction Differential equations, Partial Calor -- Conducció Equacions diferencials parcials Classificació AMS::58 Global analysis, analysis on manifolds::58J Partial differential equations on manifolds; differential operators Classificació AMS::80 Classical thermodynamics, heat transfer Zanaboni's procedure for establishing Saint-Venant's principle is ex- tended to anisotropic homogeneous transient heat conduction on regions that are successively embedded in each other to become indefinitely elon- gated. No further geometrical restrictions are imposed. The boundary of each region is maintained at zero temperature apart from the common surface of intersection which is heated to the same temperature assumed to be of bounded time variation. Heat sources are absent. Subject to these conditions, the thermal energy, supposed bounded in each region, becomes vanishingly small in those parts of the regions suficiently remote from the heated common surface. As with the original treatment, the proof involves certain monotone bounded sequences, and does not depend upon differential inequalities or the maximum principle. A definition is presented of an elongated region. Peer Reviewed Postprint (author's final draft) 2018-12 Article http://www.ams.org/journals/qam/2018-76-04/S0033-569X-2017-01497-0/ info:eu-repo/grantAgreement/MINECO/1PE/MTM2016-74934-P info:eu-repo/grantAgreement/MINECO//MTM2013-42004-P/ES/ANALISIS MATEMATICO DE LAS ECUACIONES EN DERIVADAS PARCIALES DE LA TERMOMECANICA/ http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain