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Blog Posts Tagged Technical Content

Modeling Acoustical Properties of Porous Media in COMSOL®

January 14, 2021

A guest blogger from the University of Sheffield introduces the Johnson–Champoux–Allard–Lafarge (JCAL) model for analyzing acoustical properties of porous media.

How to Analyze Turbomolecular Pumps with COMSOL Multiphysics®

January 12, 2021

Modeling gas flow in a turbomolecular pump calls for specialized numerical methods, because at such low pressures, the gas molecules rarely collide with each other.

Modeling Parts Without Constraints in Your Structural Analyses

January 7, 2021

When building a solid mechanics model, there may be parts with prescribed loads but no constraints that can be reasonably applied. Learn different approaches and considerations for this scenario.

Fractals, Noise, and State Variables

January 5, 2021

Ever notice how the leaves of a fern seem to show a self-repeating pattern? Fractals are objects that exhibit some form of self-similarity at different scales. Learn how to model them here.

What Formulation Should I Use for Particle Tracing in Fluids?

December 4, 2020

The COMSOL® software gives you 4 equation formulation options when modeling particle tracing in fluids: Newtonian; Newtonian, first order; Newtonian, ignore inertial terms; and Massless.

k • p Method for Strained Wurtzite GaN Band Structure

December 1, 2020

Model a wide range of semiconductor systems, such as particles with spins and strained wurtzite crystals, using multicomponent wave function functionality in the Schrödinger Equation interface.

Modeling a Pierce Electron Gun in COMSOL Multiphysics®

November 19, 2020

Cathode ray tubes, electron microscopes, spectrometers, and particle accelerators: These devices and components commonly use Pierce electron guns.

Model Vortex Lattice Formation in a Bose–Einstein Condensate

November 17, 2020

Bose–Einstein condensation can cause superfluidity, superconductivity, lasers, and trapped dilute cold atoms. When such systems are subjected to rotating perturbation, it forms a vortex lattice.

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