[FLASH-USERS] Problem with hydro

pchang pchang at lle.rochester.edu
Thu Dec 4 14:25:29 EST 2014


Hi all,
I am using Flash to simulate the HEDP problem. Recently, I had following 
tests:
Start with the LaserSlab example. Turn off the radiation, heat exchange, 
conduction, laser by setting:
rt_useMGD=.false.
useOpacity=.false.
useEnergyDeposition=.false.
ed_useLaserIO=.false.
useDiffuse=.false.
useConductivity=.false.
diff_useEleCond=.false.
useHeatexchange=.false.

I kept the hydro to be on by setting:
useHydro=.true.

Since there was no energy in/out, I expected nothing would change in the 
simulation. However, the temperature in the low density gas right next 
to the target dropped!
If I turned off the hydro by setting useHydro=.false. , the temperature 
did not change as expected. I tried different combinations of turning on 
and off of different physics. I found it's mainly from the hydro.
Does anyone see the same problem?

Thank you,

Po-Yu

-- 
Po-Yu Chang

Postdoctoral Associate
Mechanical Engineering,
Fusion Science Center,
Laboratory for Laser Energetics
University of Rochester
250 East River Road
Rochester, New York 14623
Phone: (585) 273-5179
FAX: (585) 275-5960
pchang at lle.rochester.edu




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