[FLASH-USERS] Wiggles appearing in density profile

[Esha Kundu]

Dear all,


I'm running the flash code radflaHD in 1D with a very steep density profile. The code is running properly but there are wiggles appearing around the steep density structure. I have attached the figures which show the initial density profile (density_1d_initial.png) and the density structure at a late epoch (density_1d_later.png) when the wiggles start to appear.  The amplitude of these wiggles are increasing with  time.


Does anyone know why these wiggles are appearing and how can I get rid of these wiggles? I am using split PPM hydro solver, have uniform resolution all over the simulated region and the eosModeInit  = "dens_temp"?.?

I would appreciate if someone can help me.


Thanks,

Esha


Department of Astronomy

The Oskar Klein Centre

Stockholm University

10691 Stockholm

Sweden

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