Examples

This is a collection of examples that illustrates the usage of the various capabilities of Musubi.

Musubi is configured via Lua scripts which need to define several variables. Most of these variables are tables with multiple components. See any of the specific examples below for a complete configuration.

At least the following need to be defined:

• sim_control, see tem_simControl_module, note that there are additional abort options defined for Musubi, see mus_abortCriteria_module
• mesh, see treelmesh_module
• physics, see mus_physics_module
• identify, see mus_scheme_header_module
• initial_condition, see mus_init_byIC
• boundary_condition, see mus_bc_header_module

Some other variables may be set to enable optional features or override defaults:

• tracking, see mus_tracking_module
• restart, see mus_restart_module
• logging, see tem_logging_module

Treelm also provides various general settings that may be specified in the configuration, see tem_general_module.

Please note that you can include other Lua scripts with require. And you can access table components with a dot notation like equation.name.

The Lua script will be executed by Musubi and in the end the defined variables will be used as configuration for the simulation.

A configuration that shows the typical parameters for a flow simulation is provided in Nozzle Flow inside.

Examples

The example setups are structured according to the physics supported by Musubi:

• Fluid flows
  • Weakly compressible flows
  • Incompressible flows
  • Isothermal acoustics flows
• Multicomponent flows
  • Gas mixtures
  • Liquid mixtures
• Advection-Diffusion equations (Scalar transport equations)
  • Nernst-Planck equation for ionic species transport
• Poisson equation