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2012

Discrete viscous sheets

7 years 3 months ago
Discrete viscous sheets
We present the first reduced-dimensional technique to simulate the dynamics of thin sheets of viscous incompressible liquid in three dimensions. Beginning from a discrete Lagrangian model for elastic thin shells, we apply the Stokes-Rayleigh analogy to derive a simple yet consistent model for viscous forces. We incorporate nonlinear surface tension forces with a formulation based on minimizing discrete surface area, and preserve the quality of triangular mesh elements through local remeshing operations. Simultaneously, we track and evolve the thickness of each triangle to exactly conserve liquid volume. This approach enables the simulation of extremely thin sheets of viscous liquids, which are difficult to animate with existing volumetric approaches. We demonstrate our method with examples of several characteristic viscous sheet behaviors, including stretching, buckling, sagging, and wrinkling. CR Categories: I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism—Animat...
Christopher Batty, Andres Uribe, Basile Audoly, Ei
Added 28 Sep 2012
Updated 28 Sep 2012
Type Journal
Year 2012
Where TOG
Authors Christopher Batty, Andres Uribe, Basile Audoly, Eitan Grinspun
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