Automated geometric modeling and parametric analysis in COMSOL Multiphysics® using MATLAB® LiveLink™

Abstract

The manual construction of multiphysics models in COMSOL Multiphysics® with variable geometries is an iterative task, prone to human errors and hardly reproducible when large design spaces need to be explored. This paper presents a systematic methodology for the full automation of the COMSOL Multiphysics® modeling cycle using the MATLAB® LiveLink™ interface: from parametric CAD geometry construction to multidisciplinary physics configuration, adaptive meshing and solver execution. The architecture of a four- module automation environment is described —parametric input, geometry construction, physics and multiphysics assignment, and resolution— and each module is formalized with its methodological rationale, reusable code patterns and numerical quality considerations. The methodology is illustrated with an engineering case study: the simulation of twelve geometric variants of molds for a pulsed electric field sintering process, in which manual exploration would have required between 9 and 18 hours of work and was completed in under 2 hours with the automated environment. Results validate the effectiveness of the approach and confirm its transferability to any engineering domain requiring parametric studies over variable geometries in COMSOL Multiphysics®.