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Chemical Engineering Module

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Droplet Breakup in a T-junctionDroplet Breakup in a T-junction

Emulsions consist of small liquid droplets immersed in an immiscible liquid and widely occur in the production of food, cosmetics, fine chemicals, and pharmaceutical products. The quality of the product is typically dependent on the size...

Removing Contaminants in a Secondary Sedimentation ClarifierRemoving Contaminants in a Secondary Sedimentation Clarifier

Wastewater treatment is a several-step process for removing contaminants. Firstly, large, solid particles are removed through sedimentation, flotation, and filtration. And then in a second step, biological treatment causes the smaller...

Fluid-Structure Interaction in Aluminum ExtrusionFluid-Structure Interaction in Aluminum Extrusion

In massive forming processes like rolling or extrusion, metal alloys are deformed in a hot solid state with material flowing under ideally plastic conditions. Such processes can be simulated effectively using computational fluid dynamics,...

The Action of Boiling Water from Two Adjacent NozzlesThe Action of Boiling Water from Two Adjacent Nozzles

Boiling flow is an example of phase transition initiated by raising the temperature of a liquid above its saturation temperature. It is possible to accomplish this in many ways; in this example by applying an external heat flux to a solid...

A Transient Analysis of Freeze-dryingA Transient Analysis of Freeze-drying

Freeze-drying, or lyophilization, is a process for drying heat-sensitive substances such as foods, blood plasma, and antibiotics. The wet substance is frozen and then through sublimation ice or some other frozen solvent is removed in the...

Chemical Reactions and Soot Build-up in a Diesel FilterChemical Reactions and Soot Build-up in a Diesel Filter

In this model, a filter system for a diesel engine is modelled, including where a soot layer builds up and is oxidized. The build-up of the layer is held in check by both catalytic and non-catalytic reactions, where carbon is oxidized to...

Schematic PumpSchematic Pump

The rotating machinery application mode makes it possible to model moving rotating parts in for example stirred tanks, mixers and pumps. This model exemplifies this in the Chemical Engineering Module. The application mode takes care...

ElectrocoalescenceElectrocoalescence

This benchmark model shows how to set up and simulate electrocoalescence phenomena using COMSOL Multiphysics and the Chemical Engineering Module. The calculated results are compared to published experimental work. In the reported...

Fixed Bed Reactor for Catalytic Hydrocarbon OxidationFixed Bed Reactor for Catalytic Hydrocarbon Oxidation

Tubular reactors are generally modelled with the assumption that the concentration and temperature gradients only occur in the axial direction. The only transport mechanism operating in this direction is the overall flow itself, which is...

Flow of Oldroyd-B Viscoelastic FluidFlow of Oldroyd-B Viscoelastic Fluid

Many complex fluids of interest exhibit a combination of viscous and elastic behavior under strain. Examples of such fluids are polymer solutions and melts, oil, toothpaste, and clay, among many others. The Oldroyd-B fluid presents...


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