COMSOL Day Ahmedabad

Learn the fundamental workflow of COMSOL Multiphysics^®. This introductory demonstration will show you all of the key modeling steps, including geometry creation, setting up physics, meshing, solving, and evaluating and visualizing results.

This session will cover news in the Chemical Reaction Engineering, Electrochemistry, Electrodeposition, Corrosion, Battery Design, and Fuel Cell & Electrolyzer modules.

Highlights include:

• New and improved features for porous reactor modeling in the Chemical Species Transport interfaces
• Modeling species adsorption and desorption on electrode surfaces
• The new Cathodic Protection interface for modeling corrosion protection
• New intercalation strain functionality for battery electrode modeling
• Electroosmotic water drag and membrane crossover in fuel cells and electrolyzers

In this session, we will cover the updates for structural mechanics and acoustics in version 6.2.

Users of the structural mechanics products will see updated damage and fracture modeling capabilities, along with tools for circuit board warpage computation and magnetic–structure multiphysics analysis of electric motors. This version also introduces capabilities for studying transport in solids, which can be used for modeling electromigration and other phenomena. Moisture transport is now more tightly integrated with structural deformations, including how it modifies the storage coefficients and porosity. Inertia relief analysis — now automated in the new version — makes it easier to analyze unconstrained structures that are accelerated by external loads.

This version also introduces a viscoplastic material model specialized for the unique properties of lithium in battery applications. Usability and performance have been significantly enhanced for parameter estimation of experimental data, including uniaxial, biaxial, and cyclic load cases.

For Acoustics Module users, frequency-dependent impedance boundary conditions now enable audio engineers to more accurately simulate acoustics in the time domain with realistic absorption. The Poroelastic Waves feature has been extended to include anisotropic materials, and users will notice considerable performance enhancements in impulse response calculations for room and cabin acoustics simulations using ray acoustics.

Krishnendu Haldar, Indian Institute of Technology Bombay

Magnetoactive polymers (MAPs) stand out for their ability to adjust their mechanical properties and shape remotely in response to magnetic fields. Typically, nonmagnetic polymers can become magnetoactive by incorporating ferromagnetic filler particles. An isotropic MAP, cured without a magnetic field, features filler particles dispersed randomly within the polymer matrix. Some notable features of MAPs are magnetic field-induced tunability of elastic and viscoelastic properties, magnetostriction, actuation, sensing, vibration isolation, and more. In this session, Krishnendu Haldar will present a new finite deformation-based constitutive model of MAP which captures the essential features of coupled magnetomechanical responses. A 3D finite element analysis will also be presented to show the consistency between experiments and model responses.

Haldar will also cover hydrogels, which are crosslinked polymeric materials capable of undergoing large deformation in response to external stimuli, such as chemical gradients and mechanical loading. Due to their high biocompatibility, hydrogels have a wide range of promising applications in various engineering fields, including drug delivery systems, artificial tissue replacement, soft robotics, soft contact lens manufacturing, sensors, etc. The combined free energy of the solvent and polymer network mixing and the strain energy of the polymer network will be used to solve a coupled boundary value problem of free swelling. The solution predicts the free swelling of hydrogel and the evolution of residual stresses induced by a slow diffusion phenomenon.

In this session, we will cover the updates in the electromagnetics products.

In version 6.2 of the AC/DC Module, nonlinear motor and transformer simulations have become significantly faster due to a new method for time-dimension periodicity. The module now includes dielectric models for tissue simulation, and dedicated functionality streamlines the modeling of imperfectly stranded conductors, like litz wires. For RF Module and Wave Optics Module users, high-frequency analysis, based on the boundary element method, is enhanced by the introduction of new boundary conditions. The Plasma Module offers more efficient handling of chemical reactions in plasmas and microwave plasma simulations. The Semiconductor Module includes several performance and robustness improvements, enabling users to preview doping profiles before solving.

COMSOL Multiphysics^® version 6.2 comes packed with new functionality for fluid flow and heat transfer.

In the CFD Module, large eddy simulation (LES) is implemented for compressible flow for accurate modeling of the flow of gases at Mach numbers below 0.3. There are also seven new Reynolds-averaged Navier–Stokes (RANS) turbulence model interfaces for high-Mach-number flow. A new potential flow interface can be used to get good initial values for the flow and to obtain faster convergence.

In the Heat Transfer Module, the SST turbulence model has been added for accurate nonisothermal flow and conjugate heat transfer simulations. The ASHRAE weather data feature is extended with a search function based on a GPS position, i.e., the feature finds the closest weather station to the GPS position. Additionally, a new thermal connection feature has been added in order to connect and add thermal resistance between two surfaces that are not geometrically in contact in the model.

Join us in this session to learn more about these updates as well as additional fluid flow and heat transfer news!