Skip to content
GitLab
  • Menu
Projects Groups Snippets
  • /
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
  • Sign in
  • T Trilinos
  • Project information
    • Project information
    • Activity
    • Labels
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
  • Issues 936
    • Issues 936
    • List
    • Boards
    • Service Desk
    • Milestones
  • Merge requests 22
    • Merge requests 22
  • CI/CD
    • CI/CD
    • Pipelines
    • Jobs
    • Schedules
  • Deployments
    • Deployments
    • Environments
    • Releases
  • Monitor
    • Monitor
    • Incidents
  • Analytics
    • Analytics
    • Value stream
    • CI/CD
    • Repository
  • Wiki
    • Wiki
  • Snippets
    • Snippets
  • Activity
  • Graph
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
Collapse sidebar
  • James Willenbring
  • Trilinos
  • Issues
  • #3715
Closed
Open
Issue created Oct 23, 2018 by James Willenbring@jmwilleOwner4 of 4 checklist items completed4/4 checklist items

Tempus: Add Stepper Initial Conditions

Created by: ccober6

Adding a Stepper initial conditions has several benefits:

  • Ensure that the initial SolutionState is consistent, i.e., x, xDot, and xDotDot satisfy the governing equation at the initial time.
  • Currently explicit Steppers are not consistent until the next time step fills in the currentState. This change will make the SolutionState consistent within the time step.
  • For explicit Steppers with a consistent SolutionState, the residual can be determined and compared to residuals from implicit Steppers. This is SPARC's main driver for this change.
  • For DAEs, making the initial condition consistent is critical to obtain the correct solution.

@trilinos/tempus

Expectations

  • Changes for this issue should not effect solutions.

Definition of Done

  • First convert Forward Euler.
  • Convert all other explicit Steppers, ERK, Leapfrog, ...
  • Convert all implicit Steppers
  • Passes all tests.
Assignee
Assign to
Time tracking