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All posts by Niklas Rom

New and Revamped Chemical Engineering Interfaces

February 13, 2015

Many exciting features for chemical engineering modeling were introduced in COMSOL Multiphysics version 5.0. In this blog post, I will discuss the most important updates. There are some new modeling interfaces, such as the Chemistry interface, and some that have been revamped and improved, like the Reaction Engineering interface. To begin with, I will recap the modeling interfaces for reaction engineering and mass transport.

How to Easily Connect 1D Pipes to 3D Flow Domains

November 27, 2014

In earlier versions of COMSOL Multiphysics, it was cumbersome to connect 1D pipes to 3D flow domains. However, did you know that a new feature in COMSOL Multiphysics version 5.0 now allows you to easily accomplish this? Let me demonstrate how this feature works.

Multiscale Reactors: Cleaning the Flows

November 3, 2014

Probably the most common reactor in the chemical industry is the packed bed reactor. This reactor is used in chemical synthesis and for effluent treatment and catalytic combustion. Oftentimes, heterogeneous catalysis requires packed beds. A common design is a cylindrical column filled with catalyst pellets. The pellets can be contained within supporting structures, like tubes or channels, or packed in a single compartment in the column. The latter is called dumped packing.

Meshing: Cap off for Cap on

October 11, 2012

Oftentimes when you are working with devices with internal fluid flow, the imported CAD design represents the vessel material. The inside is plainly void. This may leave you clueless since it is inside where you want to create a volume mesh for the flow equations. How can you solve this meshing problem in COMSOL?

How to Create High-Resolution Images of COMSOL Models for Articles and Papers

August 2, 2012

It has been some time since we’ve had the “Tips & Tricks” column in COMSOL News. Many people have asked me for tips on how to use COMSOL Multiphysics, so I figured I would share some with you here on the blog. The first in this new series of tips and tricks explains how you can create high-resolution images of COMSOL models.

Working with CAD

July 3, 2009

This week I will talk about CAD import. Many times, the first task a new user of COMSOL is up to is to lay their hands on the CAD models of the design team. After all, COMSOL handles the analysis, which needs to be closely tied with the design process. Ideally, design and analysis is integrated in one single process. There are different ways to marry the CAD models with the analysis. File based import is maybe the most common […]


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