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All posts by Nancy Bannach

Thermal Equilibrium and Nonequilibrium Heat Transfer in Porous Media

March 3, 2020

Heat transfer in porous media can occur under thermal equilibrium, such as a rock consisting of different minerals or trapped fluids, or nonequilibrium, like a thermal energy storage (TES) unit.

Modeling Darcian and Non-Darcian Flow in Porous Media

February 24, 2020

Get an introduction to the theory behind modeling flow in porous media, including the Kozeny–Carman, Forchheimer, Ergun, Burke–Plummer, and Navier–Stokes equations.

4 Methods to Account for Radiation in Participating Media

May 22, 2019

The discrete ordinates method, P1 approximation, Rosseland approximation, or the Beer–Lambert law: Which should you use to analyze heat transfer in participating media?

How to Use the Well Feature in Subsurface Flow Models

August 21, 2017

The Well feature makes it easier to set up and mesh well geometries for subsurface flow modeling. Learn how to take advantage of this feature’s settings and capabilities.

How to Analyze Thermoelectric Cooler Designs with a COMSOL App

March 8, 2017

A simulation application, such as one for a thermoelectric cooler design, can be used to test a variety of parameters in order to optimize a device for a specific use.

Analyze Thin Structures Using Up and Down Operators

January 12, 2016

Modeling complex geometries with thin structures can be very costly in terms of computational effort. Up and down operators are a way to efficiently and accurately compute these models.

Intro to Modeling Evaporative Cooling

December 8, 2014

When you think of evaporation, you probably think of the cup on your desk that spreads the aroma of coffee or tea. But evaporation is also a process with many industrial and scientific applications, ranging from meteorology to food processing. This blog entry is the beginning of a new blog series on modeling evaporative cooling. Here, we introduce the basic concepts using your coffee cup as an example.

Phase Change: Cooling and Solidification of Metal

August 12, 2014

Modeling phase change is important for many thermal processes, ranging from the food industry to the metal processing industry. The Heat Transfer Module offers a dedicated interface for modeling the characteristics of phase change. It uses the apparent heat capacity method, which we introduce here.

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