Static Mesh Refinement

[dwillcox]

Implement user-specifiable static mesh refinement.

Includes:

• number and sizes of grid cells on all refinement levels
• ability to specify fixed refinement regions
• specifying different physics options in each region
• explore factor 3 refinement (as well as 2 and 4)

[pkjha-aero]

@asalmgren will this involve re-deriving all the flux computation for refined mesh since the indices will change?

[asalmgren]

I'm not sure what you mean by that. Can you elaborate?

…

On Fri, Oct 29, 2021 at 12:20 PM Pankaj Jha ***@***.***> wrote: @asalmgren <https://github.com/asalmgren> will this involve re-deriving all the flux computation for refined mesh since the indices will change? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#133 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRE6YXYLFOWEBTKN2IXSVLUJLXZHANCNFSM5G6AFYQA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Ann Almgren Senior Scientist; CCSE Group Lead Pronouns: she/her/hers

[pkjha-aero]

@asalmgren I meant if we will need to write the discretization schemes like this (https://erf.readthedocs.io/en/latest/NavierStokes_Discretization.html#momentum-conservation-u-momentum) at all the levels of refinement taking into account the indexing at that level.

[asalmgren]

Yes -- the schemes can be used exactly as written -- I'm not sure what you mean by "taking into account the indexing at that level" Just FYI, we use a global index space, so the node i = 37 at level 0 would be the same as the node i = 74 at refined level with refinement ratio 2. Cell i = 37 at level 0 would correspond to cells i = 74 and i = 75 at level 1 When we're doing the time advance at level 1, we don't see level 0 data directly -- we instead pre-fill ghost cells so that everything is in the fine index space Does that help?

…

On Fri, Oct 29, 2021 at 12:33 PM Pankaj Jha ***@***.***> wrote: @asalmgren <https://github.com/asalmgren> I meant if we will need to write the discretization schemes like this ( https://erf.readthedocs.io/en/latest/NavierStokes_Discretization.html#momentum-conservation-u-momentum) at all the levels of refinement taking into account the indexing at that level. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#133 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ACRE6YR7RHQO7WE3GHYMJQ3UJLZHPANCNFSM5G6AFYQA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Ann Almgren Senior Scientist; CCSE Group Lead Pronouns: she/her/hers

[pkjha-aero]

Yes, thanks for clarification.