CCS and Power Systems
Crosscutting Research - University Training and Research
Multiphase Flow Research-Uncertainty Quantification Tools for Multiphase Gas-Solid Flow Simulations using MFIX
Performer: Iowa State University
Project No: FE0006946
Example application of the quadrature-based UQ procedure to a computer simulation of laminar flow of a fluid between two parallel plates, where the fluid viscosity is uncertain. From top to bottom: mean (first order moment), variance (second-order central moment; it is a measure of how far the values lie from the mean) , skewness (third-order central moment normalized by the variance at 3/2; it is a measure of the asymmetry of the probability distribution function of the variable), and kurtosis (fourth-order central moment normalized by the second power of the variance; it is a measure of how flat or peaked the probability distribution function of the variable is) of the fluid axial velocity. Scale: Blue = min, gray = intermediate, dark red = max. Actual values of the maximum and minimum of each statistical quantity are not reported since the four figures do not have the same scale.