[FLASH-USERS] Computed hydro dt is not positive

[Acharya, Nitish]

Dear flash-users,

I have been applying the analytical ideal gas EOS to simulate my material for a LaserSlab based problem. Recently, instead of using an equation, I used the same ideal gas model and built a tabulated IONMIX EOS. However, as I use the tabulated EOS for the simulation, I've been repeatedly getting an error during driver initialization as follows:

Finished with Grid_initDomain, no restart
 Ready to call Hydro_init
 [Hydro_init]: Using non-Cartesian Geometry!
 Hydro initialized
 Gravity initialized
 dtCheck=  0.000000000000000E+000
 DRIVER_ABORT: [Hydro]: Computed dt is not positive! Aborting!
 dtCheck=  0.000000000000000E+000
 DRIVER_ABORT: [Hydro]: Computed dt is not positive! Aborting!
 dtCheck=  0.000000000000000E+000
 DRIVER_ABORT: [Hydro]: Computed dt is not positive! Aborting!
 dtCheck=  0.000000000000000E+000

I'm trying to see if I could figure something out of Hydro_computeDt.F90 (this seems to be the routine that's throwing the error).

I would really appreciate your help,
Nitish


---------------------------

Nitish Acharya

PhD Student

Department of Mechanical Engineering

University of Rochester
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