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 \ntime integration method

  INTEGER rhstype = 0\nenable(1)/disabel(0) special right hand side treatment

  REAL stoptime \nphysical stop time of simulation

  REAL cfl = 0.4\nCFL number

  REAL dtlimit = EPSILON(dtlimit)*stoptime\ntime step minimum

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

  (Used in Dumka)

  INTEGER maxiter = 0\nmaximum iterations

  REAL tol_rel = 0.01\nrelative tolerance for adaptive step size control

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

  step size control

  REAL beta = 0.08\ntime step friction parameter for PI-Controller

  INTEGER always_update_bccsound = 1\nenable(1)/disable(0) update of bccsound at each

  substep

  INTEGER checkdata = CHECK_ALL\nbitmask to verify data validity/integrity

  REAL pmin = TINY(REAL)\npressure minimum to check if CHECK_PMIN has been enabled

  REAL tmin = TINY(REAL)\ntemperature minimum to check if CHECK_TMIN has been enabled

  REAL rhomin = TINY(REAL)\ndensity minimum to check if CHECK_RHOMIN has been enabled