Runners¶

Introduction¶

Runners control the progression of the simulation:

• mufem.SteadyRunner: Used for solving stationary problems using a fixed number of iterations.
• mufem.UnsteadyRunner: Used for time-dependent simulations with explicit time stepping.

Both runners can be assigned to the simulation instance and executed using the .run() method.

Coefficients¶

Each runner registers simulation progress fields as coefficient functions:

Example¶

import mufem

sim = mufem.Simulation.New("Transient Example", "data/geometry.mesh")

runner = mufem.UnsteadyRunner(total_time=1.0, time_step_size=0.1, total_inner_iterations=3)

sim.set_runner(runner)

sim.run()

field_exporter = sim.get_field_exporter()
field_exporter.add_field_output("Time")
# @todo: field_exporter.add_field_output("Time Step")
# @todo: field_exporter.add_field_output("Iteration")
field_exporter.save()