Download COMSOL Multiphysics 6.4 Build 293 x64 Win/Linux/macOS

• Version 6.4 adds GPU-accelerated solvers, a Granular Flow Module, and updates to workflows for geometry, meshing and visualization.
• In-cabin acoustic simulations, such as the one shown here of a car cabin, benefit from NVIDIA GPU acceleration in version 6.4, which offers faster and more scalable analyses.

Faster simulations with GPU-accelerated solvers

• Version 6.4 introduces NVIDIA GPU acceleration for direct solvers and expands multi-GPU support for acoustics simulations. The cuDSS sparse direct solver, designed for hybrid CPU–GPU computation, supports recent NVIDIA GPU architectures and can provide speed improvements depending on hardware and model size. GPU acceleration can be useful for both single-physics and multiphysics simulations, especially when solver stability is important. The NVIDIA CUDA-X cuBLAS library also accelerates transient pressure acoustics simulations, which can now run on multiple GPUs in a single system or on a GPU cluster. These updates reduce computation time for larger models.

Time-explicit dynamic analysis framework

• Version 6.4 adds a framework for time-explicit dynamic analysis to simulate fast, transient and highly nonlinear events, including impact, crushing and elastic wave propagation. The explicit approach supports nonlinear structural materials such as hyperelastic, plastic, viscoplastic and creep models, and can be used with dynamic fracture simulations. To simplify setup for mechanical assemblies, the software can automatically detect and define contact conditions between interacting components.

  Updates across the product suite
  Other changes in COMSOL Multiphysics version 6.4 include:
  – Improved quad-dominant and swept meshing
  – Support for spatially varying transparency
  – Array-based plot layouts
  – More efficient development of large simulation apps
  – New optimization options for time-dependent and parametric studies
  – Export of network parameters for DNN surrogate models
  – Surrogate model data generation on clusters
  – Import of CFD data in CGNS format
  – Frequency- and time-dependent uncertainty quantification

General Updates

• New Electric Discharge Module for simulating discharges in gases, liquids, and solids
• GPU acceleration delivering up to 25x faster transient acoustics simulations
• Automated geometry preparation tools for robust mesh generation
• Interactive Java environment enabling on-the-fly model modifications using the COMSOL API for use with Java
• Optional chatbot tool providing Java code assistance and answers to general queries
• Efficient surrogate model creation with GPU-based training support
• Nonlinear eigenvalue solver
• Interactive plot markers for field values
• User-defined default units
• Comments in the Properties window are now also displayed in the settings window
• Global parameter optimization solver
• New Data Viewer window for easy access to parameters and declarations
• Command-line-driven batch computations with Model Manager databases

Electromagnetics

• Efficient modeling of laminated iron in motors and transformers
• Support for direct quadrature (DQ) excitation in motors, enabling common control strategies and key machine parameter calculations
• Homogenized litz coil conductor modeling, accounting for strand count, DC resistance, and high-frequency loss
• Improved accuracy in electrostatic force calculations for MEMS devices
• Simulation of dielectric dispersion in biological tissue
• RLGC parameter calculation for multiconductor transmission lines
• Time-domain analysis of transmission lines
• Automated setup of periodic structures in wave optics
• Automatic generation of spot diagrams and geometric modulation transfer function (MTF) plots in ray optics
• Accurate calculation of leakage current in semiconductor devices
• Dedicated interfaces for simulating nonisothermal plasma flow

Structural Mechanics

• Electromechanical modeling for shells and membranes
• Multiphysics simulation of moisture-induced shrinkage and swelling
• Efficient modeling of spot welds and fasteners
• Mechanical contact conditions for interior boundaries, removing the need for contact pairs
• Viscoelastic time-domain simulation with frequency-dependent material properties
• Geometry modeling of random particulate composites
• Part Library for lattice geometries
• Up to 50% faster plasticity computations
• Pressure-dependent plasticity for foams

Acoustics

• GPU-accelerated computations for time-explicit pressure acoustics
• Time-domain simulation with frequency-dependent material properties
• Faster thermoviscous acoustics simulation using the sequential linearized Navier–Stokes (SLNS) model
• Anisotropic poroacoustics modeling

Fluid & Heat

• Reynolds-stress turbulence models for secondary flows in ducts and flows with strong swirl or mean rotation
• Enhanced high Mach number flow simulations with a new kinetic energy option
• Shear-induced migration for particle fractionation and microfiltration
• Mixing plane functionality for efficient modeling of pumps, turbines, and rotating machinery in general
• Non-Newtonian flow in porous media
• Fast drying simulations with nonequilibrium moisture transport
• Repeating unit cell method for heat transfer in composites and porous media
• Forward ray shooting for improved external radiation accuracy
• Performance boost for surface-to-surface radiation in larger models

Chemical & Electrochemical

• New two-electrode lumped model and single-particle electrode options for battery design
• Accurate formulation for modeling of concentrated electrolytes in electrochemical cells
• Precipitation and crystallization simulation for particle nucleation and growth with particle size distribution
• Demo app featuring time-dependent surrogate modeling for battery test cycles

Geometry, Mesh, CAD Import Module, Design Module, and LiveLink™ Products for CAD

• Automatic detection and removal of small details and gaps for robust mesh generation
• New mesh element sizing algorithm for resolving geometric details
• Physics-controlled meshing for imported STL files
• Extrude and revolve operations for edges and vertices
• Selection of components to import from an assembly
• Variable radius and constant width fillets
• Projection of edges to faces
• New virtual operation for merging faces
• Easier swept meshing between disconnected surfaces
• Import of component outlines and creation of plated vias for PCBs
• ECAD export to the OASIS format