Coupled problems describing global thermal behaviour of buildings are diffi
cult to solve. We are interested here in the numerical resolution of algebr
aic non-linear systems corresponding to the steady-state behaviour. After a
short description of the physical problem, main ideas of block methods are
presented. Then splitting of the analysed model is discussed and the perfo
rmance of block methods is evaluated. Finally, a robust hybrid block strate
gy, well adapted to moist airflow modelling is elaborated. (C) 2000 IMACS.
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