News in COMSOL Multiphysics - New COMSOL Desktop interface for Windows with a ribbon design that provides easier navigation - A completely new Multiphysics node in the model tree for setting up multiphysics models * Combine physics interfaces to define your own multiphysics * Choose from built-in multiphysics couplings * View each physics interface as a separate node in the tree - One-click select: hover-and-click selection method speeds up the modeling process - Auto-complete search to quickly find variables to use in results in the Windows version - Geometry subsequences for user-defined geometric primitives - If/else statements in the model tree for conditional geometry creation - Export mesh to NASTRAN file formats - Time-unit handling in the solvers News in add-on products - Structural Mechanics Module: easy access to rotordynamic forces, updated shell-solid couplings, and fast method for contact - Heat Transfer Module: fast methods for radiation in participating media, thermoelectric effect, and heating of biological tissue - Acoustics Module: Linearized Euler equations for aeroacoustics simulations - CFD Module: dramatically increased conservation of mass and energy for laminar flow - AC/DC Module: now includes 167 nonlinear magnetic materials - RF Module: ports on interior boundaries (reintroduced from version 3.5a) - Particle Tracing Module: efficient method for particle-field and fluid-particle interactions - Optimization Module: additional gradient-free method (BOBYQA) for dimensional optimization and additional gradient-based method (MMA) for topology optimization New product - Mixer Module: analysis of stirred mixers and reactors with tools for free surface modeling and non-Newtonian fluids