from thermal cojugate gradient solver ierr= 2 这个报错怎么改 求大神...

20075328

下边是完整的错误
*** Error 40352 (SOL+352)
     from thermal cojugate gradient solver ierr= 2
       ierr=1 => isufficient storage allocated
       ierr=2 => method failed to converge in itmax steps
       ierr=3 => ITOL or N incorrect
       ierr=4 => user tolerance set too tight
       ierr=5 => preconditioning matrix not positve definite
       ierr=6 => stiffness matrix not positve definite