The level set method, developed by Osher and Sethian [13] has had large impact on computational methods for interface motion and is now being used by engineers, physicists and mathematicians for a wide variety of problems ranging from twofluid flows to epitaxial growth; see, for example, the recent reviews by Osher and Fedkiw [12], Sethian [16], and Sethian and Smereka [17]. In the level set method, the interface, C, is represented implicitly as the zero level set of a continuous function which… CONTINUE READING