J. Phys. II France
Volume 1, Numéro 10, October 1991
Page(s) 1139 - 1146
DOI: 10.1051/jp2:1991124
J. Phys. II France 1 (1991) 1139-1146

Unusual exponents in interface roughening: the effects of pinning

Mogens H. Jensen and Itamar Procaccia

NORDITA Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark

(Received 31 July 1991, accepted 12 August 1991)

Recent experiments indicate that interface roughening in fluid displacement in porous media is characterized by exponents that differ from the predictions of standard roughening models. By introducing two simple models that take into account the effect of interface pinning by pores, we can easily account for the unusual exponents.

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