
Volume
The volume of a surface is computed by summing the volumes of the cells that comprise the zone:
(29.61) 
Sum
The sum of a specified field variable in a cell zone is computed by summing the value of the selected variable at each cell in the selected zone:
(29.62) 
Volume Integral
A volume integral is computed by summing the product of the cell volume and the selected field variable:
(29.63) 
VolumeWeighted Average
The volumeweighted average of a quantity is computed by dividing the summation of the product of the selected field variable and cell volume by the total volume of the cell zone:
(29.64) 
MassWeighted Integral
The massweighted integral is computed by summing the product of density, cell volume, and the selected field variable:
(29.65) 
MassWeighted Average
The massweighted average of a quantity is computed by dividing the summation of the product of density, cell volume, and the selected field variable by the summation of the product of density and cell volume:
(29.66) 