ExplicitTVDRK2

under construction:Undocumented Class

The ExplicitTVDRK2 has not been documented. The content listed below should be used as a starting point for documenting the class, which includes the typical automatic documentation associated with a MooseObject; however, what is contained is ultimately determined by what is necessary to make the documentation clear for users.


# ExplicitTVDRK2

!syntax description /Executioner/TimeIntegrator/ExplicitTVDRK2

## Overview

!! Replace these lines with information regarding the ExplicitTVDRK2 object.

## Example Input File Syntax

!! Describe and include an example of how to use the ExplicitTVDRK2 object.

!syntax parameters /Executioner/TimeIntegrator/ExplicitTVDRK2

!syntax inputs /Executioner/TimeIntegrator/ExplicitTVDRK2

!syntax children /Executioner/TimeIntegrator/ExplicitTVDRK2

!syntax description /Executioner/TimeIntegrator/ExplicitTVDRK2

Input Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
Description:Set the enabled status of the MooseObject.

Input Files

test/tests/time_integrators/tvdrk2/2d-quadratic.i
test/tests/time_integrators/tvdrk2/1d-linear.i

test/tests/time_integrators/tvdrk2/2d-quadratic.i

[Mesh]
  type = GeneratedMesh
  dim = 2
  xmin = -1
  xmax = 1
  ymin = -1
  ymax = 1
  nx = 20
  ny = 20
  elem_type = QUAD9
[]

[Functions]
  [./ic]
    type = ParsedFunction
    value = 0
  [../]

  [./forcing_fn]
    type = ParsedFunction
    value = 2*t*((x*x)+(y*y))-(4*t*t)
  [../]

  [./exact_fn]
    type = ParsedFunction
    value = t*t*((x*x)+(y*y))
  [../]
[]

[Variables]
  [./u]
    order = SECOND
    family = LAGRANGE
  [../]
[]

[Kernels]
  [./ie]
    type = TimeDerivative
    variable = u
    implicit = true
  [../]

  [./diff]
    type = Diffusion
    variable = u
    implicit = false
  [../]

  [./ffn]
    type = BodyForce
    variable = u
    function = forcing_fn
    implicit = false
  [../]
[]

[ICs]
  [./u_ic]
    type = FunctionIC
    variable = u
    function = ic
  [../]
[]

[BCs]
  [./all]
    type = FunctionDirichletBC
    variable = u
    boundary = '0 1 2 3'
    function = exact_fn
  [../]
[]

[Postprocessors]
  [./l2_err]
    type = ElementL2Error
    variable = u
    function = exact_fn
  [../]
[]

[Executioner]
  type = Transient

  [./TimeIntegrator]
    type = ExplicitTVDRK2
  [../]
  solve_type = 'LINEAR'

  start_time = 0.0
  num_steps = 10
  dt = 0.0001
  l_tol = 1e-8
[]

[Outputs]
  exodus = true
  perf_graph = true
[]

test/tests/time_integrators/tvdrk2/1d-linear.i

[Mesh]
  type = GeneratedMesh
  dim = 1
  xmin = -1
  xmax = 1
  nx = 20
  elem_type = EDGE2
[]

[Functions]
  [./ic]
    type = ParsedFunction
    value = 0
  [../]

  [./forcing_fn]
    type = ParsedFunction
    value = x
  [../]

  [./exact_fn]
    type = ParsedFunction
    value = t*x
  [../]
[]

[Variables]
  [./u]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[Kernels]
  [./ie]
    type = TimeDerivative
    variable = u
    implicit = true
  [../]

  [./diff]
    type = Diffusion
    variable = u
    implicit = false
  [../]

  [./ffn]
    type = BodyForce
    variable = u
    function = forcing_fn
    implicit = false
  [../]
[]

[ICs]
  [./u_ic]
    type = FunctionIC
    variable = u
    function = ic
  [../]
[]

[BCs]
  [./all]
    type = FunctionDirichletBC
    variable = u
    boundary = '0 1'
    function = exact_fn
  [../]
[]

[Postprocessors]
  [./l2_err]
    type = ElementL2Error
    variable = u
    function = exact_fn
  [../]
[]

[Executioner]
  type = Transient

  [./TimeIntegrator]
    type = ExplicitTVDRK2
  [../]
  solve_type = 'LINEAR'

  start_time = 0.0
  num_steps = 10
  dt = 0.001
  l_tol = 1e-15
[]

[Outputs]
  exodus = true
  perf_graph = true
[]

Input Parameters
Input Files

Application Usage

Physics and Syntax

Application Development

Framework Development

MOOSEDocs

Infrastructure

Questions

Information and Tools

ExplicitTVDRK2

Input Parameters

Input Files