Blog Posts Tagged Technical Content
Curve Fitting of Solution Data in COMSOL Multiphysics®
We discuss curve fitting of continuous solution data, the concept of orthogonality, and how to fit solution data to a set of orthogonal functions for a simple and convenient postprocessing operation.
Modeling Pitting Corrosion in COMSOL Multiphysics®
When the process of generalized corrosion is allowed to continue, the initialization of a pit may occur on the metal surface, which is also referred to as the Evans drop experiment.
Designing Antireflecting Microstructures for Infrared Applications
Explore how 2 microstructure designs can improve the bulk transmittance of silicon (~70%) and cadmium zinc telluride (~79%) to more than 90% within the specific wavelength spectrum.
Voltage and Ground When Modeling Wave-Like EM Fields
We continue our discussion of voltage and ground by defining and interpreting these terms for sinusoidally time-varying electromagnetics models.
Do Voltage and Ground Exist?
Remember how the terms “voltage” and “ground” were taught in your university electrical engineering classes? Get a precise definition (in terms of modeling computational EM problems) here.
How to Compute Residence Time in Flow Models with COMSOL®
You can compute residence time in flow problems using the Particle Tracing Module. Get the details in this blog post.
What Is the Difference Between Plane Stress and Plane Strain?
We go over the formulations and constitutive models that you can use to study plane stress, plane strain, and generalized plane strain in your solid mechanics problems.
Efficient Meshing Strategies for 3D Inductive Heating Models
Interested in some efficient meshing strategies for 3D inductive heating models? In this blog post, we demonstrate how to partition a mesh based upon the element type.
How to Model Polarization Rotation Along a Waveguide
Interested in modeling photonic waveguiding structures? Learn some efficient techniques for devices with multiple supported waveguide modes and identical waveguide cross sections.
Add a Full State-Space Feedback Controller to a Control System Model
Get a brief overview of full state feedback, learn how to use the State-Space Controller add-in, and get a demonstration of implementing the add-in using a mass-spring-damper system example.
Combining Adaptive Mesh Refinement with Data Filtering
In a follow-up to our previous blog post on data filtering, we demonstrate how to implement adaptive mesh refinement and a Helmholtz filter for a thermal model with a nonuniform heat load.
Using Data Filtering to Improve Model Performance
Want to include experimental data in your model as a load or boundary condition, but the data varies over space or time and is noisy? Try implementing data filtering, such as a Helmholtz filter.
How to Model a Hall Effect Sensor with COMSOL Multiphysics®
Basic working principle of a Hall effect sensor: A nearby magnetic field deflects the path of current through a semiconductive sensor, which causes a measurable change in potential.
Which Radiation Interface Should I Use for My Heat Transfer Model?
Compared to the mechanisms of heat transfer by conduction and convection, heat transfer by radiation has unique characteristics. How should you account for radiation in your heat transfer models?
Modeling Thermomechanical Fatigue in COMSOL Multiphysics®
You can analyze thermomechanical fatigue in COMSOL Multiphysics® using experimental data from fatigue testing and material parameters from literature. A guest blogger demonstrates…
Analyzing Electric Motor and Generator Designs with COMSOL®
Using electromagnetics simulation, you can investigate and optimize the magnetic field distribution, mechanical torque, and iron usage and losses in a permanent magnet motor or generator.
Designing District Heating Networks Using Topology Optimization
District heating networks help power plants reach high efficiencies by utilizing cogeneration, which is especially helpful in the winter. How does topology optimization fit in? Keep reading…
How to Simulate a Piezoelectric Micropump
Learn how to combine piezoelectric materials with fluid-structure interaction effects, use a velocity-dependent formula, and set up disconnected mesh between the solid and fluid domains.
Simulating a Silicon Quantum Dot in a Uniform Magnetic Field
Solar cells, LEDs, displays, photodetectors, and quantum computing are all potential applications of quantum dots, an essential aspect in the field of nanotechnology.
Using Global Equations to Introduce Fully Coupled Goal Seeking
Learn how to introduce a goal-seeking equation, combined with a fully coupled approach, to solve a nonlinear model. (Follow-up to an earlier blog post on goal seeking with a segregated solver.)
Introducing Goal Seeking into the Segregated Solver
Did you know that you can adjust a model input to achieve a desired output in your nonlinear problems? The process involves implementing a global equation into the segregated solver.
Modeling Acoustical Properties of Porous Media in COMSOL®
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®
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
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.