[FLASH-USERS] AMR Prolong Error

[William Gray]

Hello all,

I am running FLASH3.1.1 where I am using multiple species in a chemistry and cooling network. After my simulation runs for 5686 steps, I run into the error: [amr_long_gen_unk1_fun] PE= 190, ivar= 23, value=******. Trying to convert non-zero mass specific variable to per-volume form in monotonic mesh interpolation, but dens is zero! ivar=23 in this case is HD+ (ionized hydrogen deuteride). This also occurs right after a derefinement.

I have seen the other thread on this issue (http://flash.uchicago.edu/pipermail/flash-users/2009-April/002815.html). In my case, I impose a floor on my abundances after my chemistry routine to something much greater than smlrho (smlrho=1.0E-40, hd+ = 1.0E-19).

Is there any knowledge on this error and how to fix it? Any help is appreciated.

Thank you for your time,

William Gray
PhD Canidate
School of Earth and Space Exploration
Arizona State University, Tempe Az