Hi,
I get the warning Warning: The sum of mass fractions is not equal to one.
periodically. What is the likely causes for this??
- is this a numerical convergence issue? or a mass balance issue?
I am using TFM, a single mono-sized particle, char combustion/gasification reactions written in the user defined subroutines (based on combustion tutorial).
See typical output below.
thanks
Greg
INFO check_data_30.f:373
Time = 1.0664
Warning: The sum of mass fractions is not equal to one.
Statistics of sum of gas species mass fraction
Minimum sum of X_g= 0.99087
Maximum sum of X_g= 1.0023
Sum of X_g No of Cells Distribution
<0.9 0 0.0000
0.9 - 0.99 0 0.0000
0.99 - 0.999 40 0.51948E-01
0.999 - 0.9999 80 0.10390
0.9999 - 1.0001 462 0.60000
1.0001 - 1.001 118 0.15325
1.001 - 1.01 70 0.90909E-01
1.01 - 1.1 0 0.0000
1.1 0 0.0000
End of report.