JUNE 16, 2000
I. CODE DEVELOPMENT
- Higher order elements (Carl)
Almost fully functional for rblocks with arbitrary order of element. Still
some uncertainty about the effective wavenumber for the CFL condition with
higher order elements. May need to just try
May have a beta-test version for the team
to try within a week or so.
> - Parallel computations (Steve P.?)
Steve has received $20K from the computational initiative. Will work on
parallel issues with AZTEC, and maybe particle
> - Resistive wall (Tom)
Implemented for slab and periodic cylinder. Right now it is explicit.
Waiting for responses from Morrel Chance.
Still having problems with flow.
> - Neo-classical closures (Tom)
Nothing new to report. Tom will try more spatial resolution. He's also
looking at other cases.
> - Kinetic closures/particles (Charlson)
Previous particle tracking algorithm didn't work. A new algorithm is being
tested. Problems with energy conservation may arise from inadequate grid
> - Pre-/post-processing issues/Vacuum (Scott
Vacuum: not much done since Sherwood. Linear is finished, nonlinear not
finished yet (still have to implement semi-implicit operator). Will start
again week after next (going to Madison next
PP-processing: MDS+: Scott met with Jeff Schachter (GA) today. NIMROD is
hooked up to MDS+ data base and will be used as a demo for GA computational
intitiative proposal. Scott is working well with them. We're going to
give them a "real" case (high-S #86144.2250
>II. STATUS REPORTS
>FYI: Here are the goals from Sherwood:
>GOAL RESP. PERSON DATE COMMENTS
>Res. wall BC. Implemented Tom. G 06/00 (slab only) Still on track/n=0
Works. See above.
>Lin. high-beta disr. Physics Alfonso 04/00 linear is working; nonlinear is
>running now/Ming to revisit GATO problem
Dalton to take the nonlinear case over. Problems
with SP3 have been reported.
>Linear vac. validated w/GA Scott K. 04/00 Ming to get case to SK for
>Sherwood/still on track
>Nonlinear vac. Implemented Scott K. 04/00 Very close; SI resistivity needs
>to be implemented
>Push particles in NIMROD fields Scott P. 04/00 drift orbits calculated/now
>needs to be debugged
>AZTEC into current ver Steve P 08/00 awaiting
>OO/C++ structure Ahmet 11/99 conceptually implemented (in Ahmet's
>head)/progress related to POOMA's advance/POOMA uses finite differences;
>can't be reconciled with NIMROD's FE formulation/this
appears to be DEAD!
Has not revived. Should be deleted. (POOMA is also "dead", are
>"Fully functional" high ord. eles. Carl S. 04/00 (beta version) Version 3 by
>2-fluid multi-hel. RFP Rick N. 06/00 Numerical problems/still having
>problems/needs higher order elements?? (can
use beta version)
Rick was not at the meeting.
>Compete SSPX case Alfonso 11/00 Problems w/triangles; eq. is finally good,
>now can start the case
Equilibrium is being tested. Fields are decaying, hopefully will become
>Flow and high-S in ET J.-N. 09/00 Need beta version with high-order
>elements; ready for comparison with FAR
Awiats new version.
>Demo. of nonlinear high-S Dalton 11/00 (linear up to S=10**9; S=10**5
>nonlinear done; still need to push to higher
Strong flows are limiting the time step.
>Formulate diamag. Corrections Chris H./Jim C. 04/00/giving talk tomorrow
>III. OTHER TEAM ISSUES
> - M3D collaborations (All)
1. Tom has sent a test case to Hank and Wonchull. Resistive tearing mode
in TFTR. Tom's case might not be unstable. Have requested a new case from
Hank and Wonchull, haven't heard anything yet. We need an interface to
We still haven't identified a test case. Scott says he can and will
identify a case.
2. Rick has sopme 2-fluid test cases from
> - Las Vegas meeting (Dalton)
Meeting will be announced soon.
Dalton probably won't be at APS. Maybe we could have a winter meeting in
> - Other ??