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An Accurate and Efficient Frontal Solver for Fully-Coupled Hygro-Thermo-Mechanical Problems
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An Accurate and Efficient Frontal Solver for Fully-Coupled Hygro-Thermo-Mechanical Problems
Mauro Bianco7  , Gianfranco Bilardi7 , Francesco Pesavento8 , Geppino Pucci7 and Bernhard A. Schrefler8
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Dipartimento di Elettronica e Informatica, Università di Padova, Padova, Italy |
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Dipartimento di Costruzioni e Trasporti, Università di Padova, Padova, Italy |
Abstract
Solving fully-coupled non-linear hygro-thermo-mechanical problems relative to the behavior of concrete at high temperatures
is nowadays a very interesting and challenging computational problem. These models require an extensive use of computational
resources, such as main memory and computational time, due to the great number of variables and the numerical characteristics
of the coefficients of the linear systems involved.
In this paper a number of different variants of a frontal solver used within HITE-COSP, an application developed within the
BRITE Euram III “HITECO” EU project, to solve multiphase porous media problems, are presented, evaluated and compared with
respect to their numerical accuracy and performance. The final result of this activity is a new solver which is both much
faster and more accurate than the original one. Specifically, the code runs over 5 times faster and numerical errors are reduced
of up to three order of magnitude.
This work was supported, in part, by MURST of Italy within the framework of the Centre for Science and Application of Advanced
Computation Paradigms of the University of Padova.
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