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Ansys Learning Forum › Forums › Discuss Simulation › LS Dyna › Output of *CESE data with *CHEMISTRY › Reply To: Output of *CESE data with *CHEMISTRY

August 6, 2024 at 3:50 pm
Reno Genest
Ansys Employee

Hello Simao,

The *CESE_DATABASE_ELOUT keyword does not work with chemically reacting flows. Here is more information from the LS-DYNA User Manual Vol III:

"*CESE *CESE_DATABASE_ELOUT
3-56 (CESE) master@a5e83d6b2 (11/08/23)
2. Restrictions. The *CESE_DATABASE… cards (pointout/elout) are restricted to
CFD-only problems. They do not give correct results for chemically reacting
flow where *CESE couples with *CHEMISTRY."

You can control results that get stored in the d3plot using *DATABASE_EXTENT_BINARY.

Also, you can change the output frequency of the d3plot using a load curve (*DEFINE_CURVE) to have an output frequency vs time. This way, you could have a low frequency of output at times when output is not needed or not important and a high output frequency when it matters. See the LCDT parameter of *DATABASE_BINARY_D3PLOT.

Also, have a look at *CONTROL_OUTPUT as there might be quantities that you can omit from the d3plot.

 

Reno.