Comsol Multiphysics

# COMSOL Multiphysics Integration

Comprehensive guide for setting up and automating coupled fluid-structure interaction (FSI) simulations using COMSOL Multiphysics, with a focus on pump vibration analysis and related multiphysics applications.

## Overview

COMSOL Multiphysics is a leading commercial simulation platform for modeling and solving complex multiphysics problems. It provides:

- **Unified Environment**: Single platform for multiple physics domains
- **Flexible Coupling**: Built-in tools for coupling different physics
- **Equation-Based Modeling**: Direct access to underlying PDEs
- **Java API**: Programmatic control and automation
- **MATLAB LiveLink**: Integration with MATLAB for pre/post-processing
- **Application Builder**: Create custom simulation apps

COMSOL excels at coupled physics problems including:
- Fluid-structure interaction (FSI)
- Thermal-structural coupling
- Electromagnetics with thermal effects
- Acoustics-structure interaction
- Electrochemistry with transport phenomena

## COMSOL Architecture

### Model Structure
- **Component**: Independent geometry and physics
- **Study**: Solution sequence with one or more steps
- **Physics Interfaces**: Pre-configured PDE systems for specific phenomena
- **Multiphysics Couplings**: Automatic or manual coupling between physics
- **Solver Configurations**: Automatic or customized solver sequences

### Solver Technology
- **COMSOL Solver**: Direct and iterative solvers
- **Fully Coupled Approach**: Simultaneous solution of all equations
- **Segregated Solver**: Physics-based segregation for large models
- **Time-Stepping**: Implicit methods for transient analysis
- **Mesh Adaptation**: Automatic refinement based on solution

## Licensing Requirements

### Commercial Licensing

COMSOL Multiphysics requires commercial licenses for all production use:

- **Base Package**:
  - COMSOL Multiphysics license (required for all users)
  - Includes basic PDE interfaces and computational tools
  - License managed via FlexNet License Server

- **Module Licenses**: