Trac August 2022

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#2549: inlcude FLRWSolver in ET
by Hayley Macpherson 29 Aug '22

29 Aug '22

#2549: inlcude FLRWSolver in ET Reporter: Roland Haas Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Comment (by Hayley Macpherson): Thanks Roland! I usually put FLRWSolver in EinsteinInitialData/FLRWSolver, but whatever you think works best is fine by me. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolve…

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#2549: inlcude FLRWSolver in ET
by Roland Haas 29 Aug '22

29 Aug '22

#2549: inlcude FLRWSolver in ET Reporter: Roland Haas Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Comment (by Roland Haas): I have added FLRWSolver to the main ET thornlist as: ``` # FLRW cosmological initial data !TARGET = $ARR !TYPE = git !URL = https://github.com/hayleyjm/FLRWSolver_public !REPO_PATH = ../$2_public !CHECKOUT = FLRWSolver/FLRWSolver ``` which checks out `FLRWSolver_public` and creates a thorn `FLRWSolver/FLRWSolver` for it. If you would rather use a different arrangement or thorn name, please let me know. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolve…

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#2602: include Regge-Wheeler-Zerilli gauge self-force code in ET
by Roland Haas 29 Aug '22

29 Aug '22

#2602: include Regge-Wheeler-Zerilli gauge self-force code in ET Reporter: Samuel Cupp Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Other Comment (by Roland Haas): @{557058:088051f9-5b94-4b5e-bfbe-71137030b9c1} now that Peter has given the “no harm” go ahead, please integrate the code into the “master” branch or otherwise provide updated checkout information so that the RWZM version can be tested and downloaded by interested parties. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2602/include-regge-whe…

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#2616: Add NRPyEllipticET to the Einstein Toolkit
by Roland Haas 29 Aug '22

29 Aug '22

#2616: Add NRPyEllipticET to the Einstein Toolkit Reporter: Status: new Milestone: Version: Type: enhancement Priority: major Component: Comment (by Roland Haas): Please be reminded of the deadline to provide the “does no harm” initial review verdict before the deadline of Sept 1st 2022. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2616/add-nrpyelliptice…

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#2485: include complex and real scalar evolution code from Canuda in ET
by Roland Haas 29 Aug '22

29 Aug '22

#2485: include complex and real scalar evolution code from Canuda in ET Reporter: Roland Haas Status: open Milestone: Version: Type: task Priority: major Component: Comment (by Roland Haas): Please provide the “does no harm” initial review verdict before the deadline of Sept. 1st 2022. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2485/include-complex-a…

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#2602: include Regge-Wheeler-Zerilli gauge self-force code in ET
by Roland Haas 29 Aug '22

29 Aug '22

#2602: include Regge-Wheeler-Zerilli gauge self-force code in ET Reporter: Samuel Cupp Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Other Comment (by Roland Haas): @{557058:f7fd5133-6eee-4385-a5e5-3e03342a0b24} confirms “no harm” in [http://lists.einsteintoolkit.org/pipermail/users/2022-August/008670.html](h… -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2602/include-regge-whe…

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#2549: inlcude FLRWSolver in ET
by Roland Haas 29 Aug '22

29 Aug '22

#2549: inlcude FLRWSolver in ET Reporter: Roland Haas Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Comment (by Roland Haas): @{557058:8bc23f2a-45c0-477d-8ac4-a5a16c734278} confirms “does no harm” in [http://lists.einsteintoolkit.org/pipermail/users/2022-August/008670.html](h… -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolve…

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#2549: inlcude FLRWSolver in ET
by Chi Tian 26 Aug '22

26 Aug '22

#2549: inlcude FLRWSolver in ET Reporter: Roland Haas Status: new Milestone: ET_2022_05 Version: development version Type: enhancement Priority: major Component: Comment (by Chi Tian): Hi all, I have reviewed the documents and majority of the the codes. At least at physics level, everything looks fine to me. Only some tiny issues regarding the way FLRWSolver dealing with the extrinsic curvature: 1. It seems there is a typo in Eq. $10$ in the document, where minus sign is missing $at least for the case where the author mentions “Setting f =1/3 and n=2 in the above yields ∂tα=∂ta for EdS“$. 2. The name of the variable `kvalue` in several `flrw_*.f90` files seems a little confusing. From its name, it seems this variable represents the extrinsic curvature K. However, its true value seems to be `3 * kvalue` if my understanding was correct. 3. By following the gauge condition `\dot{\alpha} = f * K`, effectively it is setting the coordinate time to something closed to the conformal time `\eta`, and the value of `\alpha` will grow roughly following the growth of the scale factor `a`. Could this possibly introduce numerical instabilities to `GRhydro` when starting from a very high redshift, and universe keeps expanding for quit long? Since I would guess most of astrophysical GR simulations may choose gauge conditions that make `\alpha` close to 1. ‌ -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolve…

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#2636: CoordinateSymmetry has a parameter `rotating_90` that is never used
by Gabriele Bozzola 25 Aug '22

25 Aug '22

#2636: CoordinateSymmetry has a parameter `rotating_90` that is never used Reporter: Gabriele Bozzola Status: new Milestone: Version: Type: bug Priority: major Component: As in title. Grepping “rotating” in the llama repository doesn’t produce any result. Overall, it is unclear $to me at least$ what symmetries are supported with multipatch grids. ‌ -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2636/coordinatesymmetr…

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#2630: WaveMoL example computes energy from unsynchronized grid variables
by Roland Haas 25 Aug '22

25 Aug '22

#2630: WaveMoL example computes energy from unsynchronized grid variables Reporter: Roland Haas Status: open Milestone: Version: Type: bug Priority: major Component: Comment (by Roland Haas): Unless objected I apply this after 2022-09-08 -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2630/wavemol-example-c…

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Trac August 2022