By Blum H., Braess D., Suttmeier F.T.
While classical multigrid equipment are utilized to discretizations of variational inequalities, numerous issues are usually encountered typically because of the loss of basic possible limit operators. those problems vanish within the program of the cascadic model of the multigrid approach which during this experience yields larger merits than within the linear case. moreover, a cg-method is proposed as smoother and as solver on coarse meshes. The potency of the recent set of rules is elucidated through attempt calculations for a drawback challenge and for a Signorini challenge.
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A cascadic multigrid algorithm for variational inequalities by Blum H., Braess D., Suttmeier F.T.