Hi!
I have a hydro run in 3d carthesian coordinates, symmetric about the z axis.
I note that after just six timesteps that though I have perfect symmetry with
respect to the x-z and y-z planes the rotational symmetry is gone from one
timestep to the other.
There artefacts are in the order of about 100 Pa where the pressure in the
problem ranges from 800000 Pa - 2000000 Pa.
Initially not much but this trend will worsen, especially when the timestep
picks up ... and I have a highly sensitive BC at the other end which will
blow up quite quickly even at such small differences - but the flow is not
anywhere close to that in the first six steps (takes about 70 timesteps to
reach it).
Does such a problem ring a bell with someone, i.e. an allready fixed bug? I
will try tomorrow to make a setup for flash2.3, but it may be tricky to
reproduce exactly the same case. And even more tricky for me to migrate to
2.3 ...
Can I read restartfiles from 2.1 in 2.3?
Thanks for your time (again)!
Markus.
-- _______________________________________________________________Markus Gross AMIMechE BEng (Hons.) Mechanical Engineering
Heriot Watt University Edinburgh School of Engineering and Physical Sciences James Nasmyth Building Edinburgh EH14 4AS UK
Member of IMechE, SPIE, CSME and VDI _______________________________________________________________
further contact:
Phone : +44 (0) 131 451 4737
UNiX talk: talk markus@lasersim.mce.hw.ac.uk
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"Plans are a place to begin," Grove said. "They rarely deliver you to where you expect. Make your plans knowing you are going to throw them away."
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