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Article
Unconditionally Stable Schemes for Equations of Thin Film Epitaxy
Discrete and Continuous Dynamical Systems
  • Cheng Wang
  • Xiaoming Wang, Missouri University of Science and Technology
  • Steven M. Wise
Abstract

We present unconditionally stable and convergent numerical schemes for gradient flows with energy of the form √ (F(Δφ(x)) +ε2/2|Δ(x)|2) dx. the construction of the schemes involves an appropriate extension of Eyre's idea of convex-concave decomposition of the energy functional. as an application, we derive unconditionally stable and convergent schemes for epitaxial film growth models with slope selection (F (y) = 1/4(|y|2 - 1)2) and without slope selection (F (y) = - 1/21n(1 + |y|2 )). We conclude the paper with some preliminary computations that employ the proposed schemes.

Department(s)
Mathematics and Statistics
Keywords and Phrases
  • Convexity Splitting,
  • Energy Stability,
  • Epitaxial Growth,
  • Long-Time Stability
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 American Institute of Mathematical Sciences (AIMS), All rights reserved.
Publication Date
9-1-2010
Publication Date
01 Sep 2010
Citation Information
Cheng Wang, Xiaoming Wang and Steven M. Wise. "Unconditionally Stable Schemes for Equations of Thin Film Epitaxy" Discrete and Continuous Dynamical Systems Vol. 28 Iss. 1 (2010) p. 405 - 423 ISSN: 1078-0947
Available at: http://works.bepress.com/xiaoming-wang/31/