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Cut finite element methods

delete2025-07-01
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E
Erik Burman *
P
Peter Hansbo
M
Mats G. Larson
S
Sara Zahedi
DOI:10.1017/S0962492925000017delete
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Abstract

Abstract

En 中文
Cut finite element methods (CutFEM) extend the standard finite element method to unfitted meshes, enabling the accurate resolution of domain boundaries and interfaces without requiring the mesh to conform to them. This approach preserves the key properties and accuracy of the standard method while addressing challenges posed by complex geometries and moving interfaces.In recent years, CutFEM has gained significant attention for its ability to discretize partial differential equations in domains with intricate geometries. This paper provides a comprehensive review of the core concepts and key developments in CutFEM, beginning with its formulation for common model problems and the presentation of fundamental analytical results, including error estimates and condition number estimates for the resulting algebraic systems. Stabilization techniques for cut elements, which ensure numerical robustness, are also explored. Finally, extensions to methods involving Lagrange multipliers and applications to time-dependent problems are discussed.
Keywords:
DISCONTINUOUS GALERKIN METHODS
MINIMAL STABILIZATION PROCEDURE
FICTITIOUS DOMAIN APPROACH
UNFITTED NITSCHE METHOD
BOUNDARY-VALUE
LEVEL SET
INCOMPRESSIBLE FLUID
LAGRANGE MULTIPLIERS
ELLIPTIC PROBLEMS
TOPOLOGY OPTIMIZATION
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Journal

Acta Numerica cover
Acta Numerica
IF:
11.3
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89
Citations:
3.4K

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