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f. dubois - Laboratoire de Mathématiques et de leurs Applications ...

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Intro Racines carrées Collocation mixte Tests numériques Joulin Chaleur Couplage Couplage simplifié<br />

Collocation mixte (iii)<br />

• ”State-flux constraint” for the scheme P1Q0 :<br />

the relations (13)(15) take the form<br />

u h j+1 −<br />

hβ h<br />

f<br />

Γ(β + 1) j+ 1<br />

2<br />

= u0 +<br />

hβ j−1<br />

αj−k f<br />

Γ(β + 1)<br />

k=0<br />

h<br />

k+ 1 , (16)<br />

2<br />

with j ∈ N , αk ≡ (k + 1) β − k β , k ∈ N .<br />

• Newton m<strong>et</strong>hod for the numerical solution of eqs. (15) (16) ;<br />

”Semidif” software,<br />

see http : //www.laas.fr/gt-opd/ (free of charge !).

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