'''COMSOL Multiphysics''' is a simulation [[softwarefinite element]] packageanalysis, forsolver, performing [[Multiphysicsand simulation|multiphysicssimulations]]software package for various physics and cross-platformengineering [[finiteapplications, element]]especially analysiscoupled phenomena and solution[[Multiphysics findingsimulation|multiphysics.]] The software facilitates conventional physics-based user interfaces and coupled systems of [[partial differential equation]]s (PDEs). COMSOL provides an [[Integrated development environment|IDE]] and unified workflow for electrical, mechanical, fluid, acoustics, and chemical applications.
Beside the classical problems that can be addressed with application modules, the core Multiphysics package can be used to solve [[Partial differential equation|PDEs]] in [[Weak formulation|weak form]].