StepUvlm¶

class sharpy.solvers.stepuvlm.StepUvlm[source]¶

StepUVLM is the main solver to use for unsteady aerodynamics.

The desired flow field is injected into the simulation by means of a generator. For a list of available velocity field generators see the documentation page on generators which can be found under SHARPy Source Code.

Typical generators could be:

amongst others.

The settings that this solver accepts are given by a dictionary, with the following key-value pairs:

Name	Type	Description	Default	Options
`print_info`	`bool`	Print info to screen	`True`
`num_cores`	`int`	Number of cores to use in the VLM lib	`0`
`n_time_steps`	`int`	Number of time steps to be run	`100`
`convection_scheme`	`int`	`0`: fixed wake, `2`: convected with background flow;``3``: full force-free wake	`3`	`0`, `2`, `3`
`dt`	`float`	Time step	`0.1`
`iterative_solver`	`bool`	Not in use	`False`
`iterative_tol`	`float`	Not in use	`0.0001`
`iterative_precond`	`bool`	Not in use	`False`
`velocity_field_generator`	`str`	Name of the velocity field generator to be used in the simulation	`SteadyVelocityField`
`velocity_field_input`	`dict`	Dictionary of settings for the velocity field generator	`{}`
`gamma_dot_filtering`	`int`	Filtering parameter for the Welch filter for the Gamma_dot estimation. Used when `unsteady_force_contribution` is `on`.	`0`
`rho`	`float`	Air density	`1.225`
`cfl1`	`bool`	If it is `True`, it assumes that the discretisation complies with CFL=1	`True`
`vortex_radius`	`float`	Distance between points below which induction is not computed	`<sphinx.ext.autodoc.importer._MockObject object at 0x7f8a285df0f0>`

initialise(data, custom_settings=None)[source]¶: To be called just once per simulation.

run(aero_tstep=None, structure_tstep=None, convect_wake=True, dt=None, t=None, unsteady_contribution=False)[source]¶: Runs a step of the aerodynamics as implemented in UVLM.