RecommendedTimeStep_AMRController2D Function

  1. SELF_AMRController_2D.f90
  2. SELF_AMRController_2D
  3. RecommendedTimeStep_AMRController2D

public function RecommendedTimeStep_AMRController2D(this, dtBase) result(dt)

Level-based explicit-stability time step: refinement halves the element scale per level, so a time step dtBase that is stable on the base (level-0) mesh scales to dtBase / 2**MaxLevel on the current forest. Deterministic and exact for the quadtree (child elements are exact half-scale subdivisions); no geometry reduction is needed.

Arguments

TypeIntentOptionalAttributesName
class(AMRController2D), intent(in) :: this
real(kind=prec), intent(in) :: dtBase

Return Value real(kind=prec)


Contents

Source Code

RecommendedTimeStep_AMRController2D

Source Code

  function RecommendedTimeStep_AMRController2D(this,dtBase) result(dt)
    !! Level-based explicit-stability time step: refinement halves the element scale per
    !! level, so a time step dtBase that is stable on the base (level-0) mesh scales to
    !! dtBase / 2**MaxLevel on the current forest. Deterministic and exact for the quadtree
    !! (child elements are exact half-scale subdivisions); no geometry reduction is needed.
    implicit none
    class(AMRController2D),intent(in) :: this
    real(prec),intent(in) :: dtBase
    real(prec) :: dt

    dt = dtBase/real(2**this%forest%MaxLevel(),prec)

  endfunction RecommendedTimeStep_AMRController2D