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Support adaptive time stepping method #1848

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prudhomm opened this issue May 4, 2022 · 2 comments
Open

Support adaptive time stepping method #1848

prudhomm opened this issue May 4, 2022 · 2 comments
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@prudhomm
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module:ts pinned ✨ type:feature
Milestone
v111

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@prudhomm
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prudhomm commented May 4, 2022

There exists several algorithms to hadle adaptive time stepping, We shall start with BDF.

The methodology will be :

  1. support BDF variable time stepping using automated backward differences
  2. implement variable time stepping 1st and 2nd order possibly higher order as well since we will automate coefficient computations
  3. implement 1st 2nd variable order variable time stepping strategies
  4. implement variable order variable time stepping strategies up to order 4
@prudhomm prudhomm added this to the future milestone May 4, 2022
@prudhomm prudhomm self-assigned this May 4, 2022
prudhomm added a commit that referenced this issue May 4, 2022
@prudhomm
Support adaptive time stepping method #1848
1599364 
add 2nd order filter and update test
@prudhomm prudhomm modified the milestones: future, v110 May 20, 2022
prudhomm added a commit that referenced this issue May 22, 2022
@prudhomm
added adaptive time stepping coefficients computation
488ab3b 
use newton differences
add time values  map

Support adaptive time stepping method #1848
prudhomm added a commit that referenced this issue May 23, 2022
@prudhomm
work on VSS coefficients, not yet working, + update test
c182199 
Support adaptive time stepping method #1848
@prudhomm prudhomm modified the milestones: v110, v111 Jul 1, 2022
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This is needed for feelpp/phd.celine#4

@prudhomm prudhomm mentioned this issue Nov 16, 2022
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@prudhomm prudhomm reopened this Dec 17, 2023
@prudhomm prudhomm mentioned this issue Apr 16, 2024
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@prudhomm prudhomm

Labels
module:ts pinned ✨ type:feature
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Feel++
Status: Todo
Milestone
v111
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resolves 1848 and 2239: support adaptive ts and flexible pmm preconditioning feelpp/feelpp
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@prudhomm @VLCeline