need help
 

Hi Dear friends,

I would like to know about variance. I have DNS dat of the 3D jet, i,e I have mixture fraction, in non premixed LES combustion, f variance is assumed to be Beta distribution. how to calculate betadistribution within LES cell, as i have only mixture fraction,how to get the variance? the main aim is i would like to compare actual PDF with the Beta PDF.please let me know thankyou