Application Library examples

The Application Libraries are complete models, ready to solve. Open one from the New window, from File Application Libraries, or from the command line with elmerstudio --example KEY. Then press Ctrl+= to compute it. Each solves in seconds to a minute.

Use them to see how a model of a given kind is set up: open the nodes one by one and read their Settings.

Example Key Space Physics and study What it shows

Example	Key	Space	Physics and study	What it shows
Busbar - Joule heating	`busbar`	3D	Electric Currents + Heat Transfer (Joule Heating), stationary	Blocks, union and cylindrical holes; voltage and ground on the leg ends; convective cooling; the Electromagnetic Heating coupling.
Heat sink	`heat_sink`	3D	Heat Transfer in Solids, stationary	A fin Array; a heat flux `P0/(area)` into the base; convective cooling on all other faces.
Cantilever beam - eigenfrequencies	`cantilever`	3D	Solid Mechanics, eigenfrequency	A steel beam fixed at one end; six eigenmodes. The first frequency agrees with Euler–Bernoulli theory (40.80 vs 40.77 Hz).
Flow past a cylinder	`flow_cylinder`	2D	Laminar Flow, stationary	A channel with a cylinder at Re = 20: inlet velocity, outlet, default walls; a finer mesh.
Parallel-plate capacitor	`capacitor`	2D	Electrostatics, stationary	Two plates in an air box (Difference); potential and ground on the plates; fringing fields.
Coil with iron core	`coil`	2D axisymmetric	Magnetic Fields, stationary	Coil and iron core in air; External Current Density; magnetic flux density in r-z.
Sphere quenching	`sphere`	2D axisymmetric	Heat Transfer in Solids, time dependent	A half-disc sector revolved into a steel sphere at 600 °C, cooled by convection for 300 s.
Loudspeaker radiation	`loudspeaker`	3D	Pressure Acoustics, frequency domain	A piston on a closed box in a sphere of air; Spherical Wave Radiation; Exterior Field Calculation; radiation patterns.
Spherical scatterer	`scatterer`	2D axisymmetric	Pressure Acoustics, frequency domain	A rigid sphere in an incident plane wave; the scattered field against the analytic series.

Busbar - Joule heating

busbar

Electric Currents + Heat Transfer (Joule Heating), stationary

Blocks, union and cylindrical holes; voltage and ground on the leg ends; convective cooling; the Electromagnetic Heating coupling.

Heat sink

heat_sink

Heat Transfer in Solids, stationary

A fin Array; a heat flux P0/(area) into the base; convective cooling on all other faces.

Cantilever beam - eigenfrequencies

cantilever

Solid Mechanics, eigenfrequency

A steel beam fixed at one end; six eigenmodes. The first frequency agrees with Euler–Bernoulli theory (40.80 vs 40.77 Hz).

Flow past a cylinder

flow_cylinder

Laminar Flow, stationary

A channel with a cylinder at Re = 20: inlet velocity, outlet, default walls; a finer mesh.

Parallel-plate capacitor

capacitor

Electrostatics, stationary

Two plates in an air box (Difference); potential and ground on the plates; fringing fields.

Coil with iron core

coil

2D axisymmetric

Magnetic Fields, stationary

Coil and iron core in air; External Current Density; magnetic flux density in r-z.

Sphere quenching

sphere

2D axisymmetric

Heat Transfer in Solids, time dependent

A half-disc sector revolved into a steel sphere at 600 °C, cooled by convection for 300 s.

Loudspeaker radiation

loudspeaker

Pressure Acoustics, frequency domain

A piston on a closed box in a sphere of air; Spherical Wave Radiation; Exterior Field Calculation; radiation patterns.

Spherical scatterer

scatterer

2D axisymmetric

Pressure Acoustics, frequency domain

A rigid sphere in an incident plane wave; the scattered field against the analytic series.

Gallery

Figure 1. Busbar: temperature

Figure 2. Cantilever: an eigenmode

Figure 3. Flow past a cylinder: velocity

Figure 4. Capacitor: electric potential

Figure 5. Sphere quenching: temperature

Figure 6. Heat sink: isosurfaces and streamlines

Figure 7. Coil: revolved flux density

Figure 8. Loudspeaker: pressure isosurfaces

Figure 9. Scatterer: sound pressure level

A walk through one example

The busbar, stage by stage, as the Graphics window shows it when you select each node:

Figure 10. Geometry

Figure 11. Electric Potential 1 with its boundary selected

Figure 12. Copper and its Material Contents

Figure 13. The mesh

Figure 14. After Compute: the first default plot group, the electric potential as a multislice

The Busbar tutorial builds the full COMSOL tutorial geometry, with work planes and fillets, step by step.