atl_timestep_control_type Derived Type

type, public :: atl_timestep_control_type

Datatype to represent the control of timesteps.


Inherited by

type~~atl_timestep_control_type~~InheritedByGraph type~atl_timestep_control_type atl_timestep_control_type type~atl_global_timestep_type atl_global_timestep_type type~atl_global_timestep_type->type~atl_timestep_control_type control type~atl_element_container_type atl_element_container_type type~atl_element_container_type->type~atl_global_timestep_type time

Components

Type Visibility Attributes Name Initial
real(kind=rk), public :: cfl

The cfl number that has to be satisfied by the timestep (for the convective part of the equation).
real(kind=rk), public :: cfl_visc

The cfl number that has to be satisfied by the timestep (for the viscous part of the equation).
logical, public :: use_modal_estimate = .false.

Flag to indicate whether to use modal min/max estimations in computation of timestep limitation.
real(kind=rk), public :: fixed_dt

Fixed timestep length

A negative setting indicates that adaptive timesteps via CFL should be used.

Note

This feature is currently implemented in a minimal change kind of approach and still allocates temporary arrays for the timestep computation. Those might still be necessary to compute the dynamic CFL for the fixed dt, but this is currently also not implemented.