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Chemical Reaction Engineering Module

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NOx Reduction in a Monolithic ReactorNOx Reduction in a Monolithic Reactor

This suite of examples illustrate the modeling of selective NO reduction, that occurs as flue gases pass through the channels of a monolithic reactor in the exhaust system of a motored vehicle. The simulations are aimed at finding the...

Porous Reactor with Injection NeedlePorous Reactor with Injection Needle

This model treats the flow field and species distribution in an experimental reactor for studies of heterogeneous catalysis. The model exemplifies the coupling of free and porous media flow in fixed bed reactors. The reactor consists...

Separation Through DialysisSeparation Through Dialysis

Dialysis is a frequently used membrane separation process. An important application is hemodialysis, where membranes are used as artificial kidneys for people suffering from renal failure. Other applications include the recovery of...

Surface Reactions in a BiosensorSurface Reactions in a Biosensor

A flow cell in a biosensor contains an array of micropillars. The curved side of the pillars are coated with an active material that allows for the selective adsorption of analyte species in the sample stream. The adsorbed species produce...

Electroosmotic Flow in Porous MediaElectroosmotic Flow in Porous Media

This example treats the modeling of electroosmotic flow in porous media. The system consists of a compartment of sintered porous material and two electrodes that generate an electric field. The cell combines pressure and electroosmotic...

Heat Transfer and Steam Reforming in a ReactorHeat Transfer and Steam Reforming in a Reactor

In fuel cell power generators, a steam reformer unit typically produces the hydrogen needed for the cell stack. This example illustrates the modeling of a steam reformer. The reformation chemistry occurs in a porous catalytic bed where...

Laminar Static MixerLaminar Static Mixer

In static mixers, also called motionless or in-line mixers, a fluid is pumped through a pipe containing stationary blades. This mixing technique is particularly well suited for laminar flow mixing because it generates only small pressure...

Microchannel CellMicrochannel Cell

This example was originally formulated by Albert Witarsa under Professor Bruce Finlayson’s supervision at the University of Washington in Seattle. It was part of a graduate course in which the assignment consisted of evaluating the...

Thermal DecompositionThermal Decomposition

In this tutorial model, couple heat and mass transport equations to laminar flow in order to model exothermic reactions in parallel plate reactor. It exemplifies how COMSOL Multiphysics allows you to systematically set up and solve...

Electrokinetic ValveElectrokinetic Valve

This model presents an example of pressure driven flow and electrophoresis in a 3D micro channel system. Researchers often use a device similar to the one in this model as an electrokinetic sample injector in biochips to obtain...


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