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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...

Forced Turbulent Convection Cooling of a Hot PlateForced Turbulent Convection Cooling of a Hot Plate

The accompanying models demonstrates how to model forced turbulent convection cooling with COMSOL Multiphysics. Two different approaches are demonstrated. The first one uses the K-epsilon Turbulent Flow application mode of the...

Forchheimer FlowForchheimer Flow

The coupling of free media flow with porous media flow is common in the fields of earth science and chemical engineering. Perhaps the most common way to deal with coupled free and porous media flow is to incorporate flow described by...

Free Convection in a Porous MediumFree Convection in a Porous Medium

This example treats the modeling of sub-surface flow where free convection in porous media is analyzed. The results are compared with published literature in the field. The model couples the momentum balance to an energy balance...

Friction Stir Welding of an Aluminum PlateFriction Stir Welding of an Aluminum Plate

In friction stir welding, a rotating tool moves along the weld joint and melts the aluminum through the generation of friction heat. The tool’s rotation stirs the melted aluminum such that the two plates are joined. In this model,...

Heat Transfer in a Brake Disc of a CarHeat Transfer in a Brake Disc of a Car

This example models the transient heating, and final temperature, of a disk brake of a car in brake-and-release sequence. It is important to model the transient heating and the following convective cooling to determine the minimum...

Helmholtz CoilHelmholtz Coil

A Helmholtz coil is a parallel pair of identical circular coils spaced one radius apart and wound so that the current flows through both coils in the same direction. This winding results in a uniform magnetic field between the coils with...

InkjetInkjet

This example demonstrates how to model the fluid flow from an inkjet, for instance, within an inkjet printer. An ink droplet is ejected through a nozzle and travels through air until it hits the target. A conservative level set method...


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