Application Gallery

The Application Gallery features COMSOL Multiphysics tutorial and demo app files pertinent to the electrical, mechanical, fluid, and chemical disciplines. You can download ready-to-use tutorial models and demo apps with step-by-step instructions for how to create them yourself. The examples in the gallery serve as a great starting point for your own simulation work.
Use the Quick Search to find tutorials and apps relevant to your area of expertise. Log in or create a COMSOL Access account that is associated with a valid COMSOL license to download the MPH-files.

Flow Around an Inclined NACA 0012 Airfoil

This model simulates the flow around an inclined NACA 0012 airfoil at different angles of attack using the SST turbulence model. The results show good agreement with the experimental lift data of Ladson and the pressure data of Gregory and O’Reilly.

Gravity and Boundary Conditions

The influence of gravity on the flow pattern is often an important issue when modeling flow in fluids with variable density. You can account for this influence in the model equations by adding, to the momentum balances, the volume force. This model shows a simple example of the implementation of boundary conditions when volumetric forces are included in the momentum balances. This can be used ...

Flow 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 one of the simplest constitutive models capable of describing the viscoelastic behavior of dilute polymeric solutions under general flow conditions. Despite the ...

Circulated Fluidized Bed

This is model of a circulated fluidized bed, which is a very common apparatus in the food, pharmaceutical, and chemical processing industry for solid-fluid contacting. The dispersed phase, consisting of solid spherical particles, is fluidized by air and transported upwards through a vertical riser. Upon reaching the outlet, the dispersed phase is reinjected through vertical slots at the bottom of ...

Flow in a Bubble Column Reactor

This example illustrates multiphase flow modeling in a bubble column reactor. The reactor is filled with water and gas bubbles are injected from the bottom. Due to buoyancy, the bubbles rise, inducing a circulating motion of the liquid. Furthermore, as the bubbles rise through the water, gas dissolves from the bubbles into the liquid. The example uses the macroscopic, two-phase flow model ...

Stationary Incompressible Flow over a Backstep

This tutorial model solves the incompressible Navier-Stokes equations in a backstep geometry using the Laminar Flow interface. A characteristic feature of fluid flow in geometries of this kind is the recirculation region that forms where the flow exits the narrow inlet region. The model clearly demonstrates the formation of such a region, which is best displayed by visualizing the flow ...

Two-Phase Flow Modeling of a Dense Suspension

Liquid-solid mixtures (suspensions) are important in a variety of industrial fields, such as oil and gas refinement, paper manufacturing, food processing, slurry transport, and wastewater treatment. Several different modeling approaches have been developed by the CFD community, ranging from discrete, particle-based methods to macroscopic, semi-empirical two-phase descriptions. This model ...

Turbulent Flow Over a Backward Facing Step

The backward facing step is an interesting case for studying the performance and solution strategy of a turbulence model. In this case, the flow is subjected to a sudden increase of cross-sectional area, resulting in a separation of flow starting at the point of expansion. Spatial variations in the velocity field cause production of turbulence outside the wall region and its interaction with ...

Bending Pipe

This model studies the fluid flow through a bending pipe in 3D for the Reynolds number 300 000. Because of the high Reynolds number, the k-epsilon and the k-omega turbulence models are used. Calculations with and without corner smoothing are performed. The results are compared with experimental data.

Water Purification Reactor

Water purification for turning natural water into drinking water is a process constituted of several steps. At least one step must be a disinfectant step. One way to achieve efficient disinfection in an environmentally friendly way is to use ozone. A typical ozone purification reactor is about 40 m long and resembles a maze with partial walls or baffles that divide the space into room-sized ...

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