The following information was submitted:
Transactions: INTERNATIONAL JOURNAL of MATHEMATICS AND COMPUTERS IN SIMULATION
Transactions ID Number: 20-273
Full Name: Jiri Vala
Position: Professor
Age: ON
Sex: Male
Address: FCE BUT, 602 00 Brno, Veveri 95
Country: CZECH REPUBLIC
Tel: 541147604
Tel prefix: 420
Fax: 541147624
E-mail address: vala.j@fce.vutbr.cz
Other E-mails:
Title of the Paper: Least-squares based technique for identification of thermal characteristics of building materials
Authors as they appear in the Paper: Jiri Vala
Email addresses of all the authors:
Number of paper pages: 9
Abstract: The thermomechanical behavior of building materials and whole engineering structures is conditioned by their complicated non-periodic microstructure and non-deterministic influences from external environment, involving phase changes, moisture transport, etc. However, technical standards require evaluation of effective (macroscopic) material characteristics for simplified linear differen-tial or integral equations. Even if related direct mathematical and computational problems (with a priori known material characteris-tics) are rather easy, inverse problems (with missing or uncertain values of some material characteristics) may be ill-posed and non-stable, requiring artificial regularization. This article demonstrates how to avoid some difficulties of this type in the case of identifica-tion of basic thermal characteristics, namely of the thermal conduc-tivity and of the heat capacity (including the potential effect of inter-face heat transfer), using the numerical !
least squares technique. The corresponding laboratory equipment, supplied by the robust MATLAB-based computational tool, is presented.
Keywords: Building materials, Inverse problems, Heat transfer, Least squares method, Partial differential equations of evolution.
EXTENSION of the file: .pdf
Special (Invited) Session: Computational support of the laboratory identification of thermal technical characteristics of building materials
Organizer of the Session: 150-125
How Did you learn about congress: Dr.Azra Korjenic, TU Vienna (azra.korjenic@tuwien.ac.at), Dr.Vladislav Kozak, Institute of Physics of Materials AS CR (kozak@ipm.cz), Dr.Vratislava Mosova, Moravian College Olomouc (vratislava.mosova@mvso.cz)
IP ADDRESS: 147.229.25.157
