Model Gallery

The Model Gallery features COMSOL Multiphysics model files from a wide variety of application areas including the electrical, mechanical, fluid, and chemical disciplines. You can download ready-to-use models and step-by-step instructions for building the model, and use these as a starting point for your own modeling work. Use the Quick Search to find models relevant to your area of expertise, and login or create a COMSOL Access account that is associated with a valid COMSOL license to download the model files.

Modifying Imported CAD Geometry with the Deformed Geometry Interface

When you are working with foreign CAD or ECAD data, such as files in the STEP, GDS, or IGES file formats, or any of the other supported formats, you may think that you need to re-import a new CAD file and start your modeling over from scratch if you want to study a change in size or shape. But, in fact, you can modify the geometry that you've imported with some clever usage of the Deformed ...

Numerical modeling of glacier flow

Glacier ice is generally treated as an incompressible, heat-conducting non-Newtonian fluid. The viscosity of ice depends on temperature and on the state of deformation. In the case of Storglaciären, however, the influence of temperature-dependent viscosity on the general flow field of the glacier is small. With COMSOL Multiphysics, it is relatively easy to verify that neglecting this ...

The Blasius Boundary Layer - new

The incompressible boundary layer on a flat plate in the absence of a pressure gradient is usually referred to as the Blasius boundary layer. The steady, laminar boundary layer developing downstream of the leading edge eventually becomes unstable to Tollmien-Schlichting waves and finally transitions to a fully turbulent boundary layer. Due to its fundamental importance, this type of flow has ...

Gate Valve in Pipe Branch

A gate valve in a piping branch point is simulated using high viscosity in the gate itself. A parametric run varies gate position from 100% open to fully closed

Modeling a Distributed Model of Thermal Microactuator on a Cluster - new

A model of a thermal microactuator requires the coupled simulation of electric current conduction with heat generation, heat conduction, and structural stresses and strains due to thermal expansion. The purpose of this model is to demonstrate how to access the cluster computing functionality in COMSOL from COMSOL Desktop and use it to submit a batch job to a cluster through a job scheduler. The ...

Tapered Membrane End Load - new

This example shows a 2D plane stress model of a membrane with a thickness of 0.1 m. The load is a uniformly distributed horizontal load of 10 MN/m (that is, a pressure of 100 MPa) along the right end. At the left end, the membrane is constrained from movement in the x direction. At the left end's midpoint, the membrane is kept fixed. The resulting x-direction stress is compared to a NAFEMS ...

Stationary Incompressible Flow over a Backstep using Argyris Elements

This model examines the physics of plane, incompressible and steady flow over a backward step in the absence of external forces. It addresses a common benchmark problem in the field of computational fluid dynamics. There is no known exact solution, but experimental data have been published, making it possible to check the accuracy of the FEM solution. The model exemplifies a divergence-free ...

Image Import: Homogenized Pore Scale Flow and Thermal Conduction

You can now use image data to represent 2D material distributions or to identify regions with different materials by their color or gray scale. Images used in this way can have many origins such as scanning electron microscope (SEM), computed tomography (CT), or magnetic resonance imaging (MRI). An important application of image import is for easy computation of equivalent volume-averaged ...

How to Use Contour Line in Geometry

This presentation gives instructions on how to export a Contour Plot (single line), re-import it as an Interpolation Curve on a Work Plane in the Geometry, extrude the Work Plane, then Convert to Solid to create two domains separated by the new surface.

Tapered Cantilever with Two Load Cases - new

This example shows a 2D plane stress model of a thin tapered cantilever. Different boundary and load scenarios are examined. It is demonstrated how to apply and how to evaluate different load and constraint groups. Resulting stresses are compared to NAFEMS benchmark values and they are found to be in good agreement.

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