Timedisc

Base module for time discretization. More...

Modules
module	timedisc_base_mod
module	timedisc_cashkarp_mod
	subroutines for embedded Runge-Kutta method
module	timedisc_dormand_prince_mod
	subroutines for Dormand-Prince method
module	timedisc_modeuler_mod
	subroutines for modified Euler i.e. Runge-Kutta methods
module	timedisc_rkfehlberg_mod
	subroutines for Runge-Kutta Fehlberg method
module	timedisc_ssprk_mod
	subroutines for strong stability preserving (SSP) Runge Kutta methods

Detailed Description

Base module for time discretization.

• general parameters of timedisc group as key-values

  INTEGER method integration method

  REAL stoptime stop time of simulation

  REAL cfl = 0.4 number

  REAL dtlimit = EPSILON(dtlimit)*stoptime step minimum

  REAL dtmax = 5 step maximum in units of [CFL timestep]

  (Used in Dumka)

  INTEGER maxiter = 0 iterations

  REAL tol_rel = 0.01 tolerance for adaptive step size control

  REAL, DIMENSION(PhysicsVNUM) tol_abs = (/0.001,0.001,../) absolute tolerance for adaptive

  step size control

  REAL beta = 0.08 step friction parameter for PI-Controller

  INTEGER always_update_bccsound = 1 (=1) update of bccsound at each

  substep (0 disables)