When running a laminar multicomponent chemistry problem using high resolution differencing for energy mass fractions the temperature field shows very large spatial oscillations with a range which is very unphysical.

By default the energy gradient is not used in computing beta for the energy mcf group of equations. This can cause the standard second order oscillatory behaviour for energy if the mass fraction fields are smooth and monotonic. To deal with this, force the use of energy in computing beta by setting the expert parameter 'energy in mcf beta = t'.

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