Author(s): Youkuan Zhang; Jie Lin
Linked Author(s):
Keywords: No Keywords
Abstract: Monte carlo simulations of transport of a non-ergodic solute plume by steadystate groundwater flow with a uniform mean velocity, μ, were performed in a two-dimensional heterogeneous aquifer whose transmissivity, T, is log-normally distributed with an isotropic exponential covariance. The averages of the second spatial moments of a plume about its center of mass, , and the plume centroid covariance. R＿ (i) (t) (i=1.2), were simulated for the variance of log T, σ＿Y～2=0.1. 0.5 and 1.0 and line sources normal to μ of three dimensionless lengths. The simulated longitudinal moments, -S＿ (1) (0) and R＿ (1) (t) (thus their summation X＿ (11)) agree well with the first-order theoretical results but the simulated transverse moments -S＿ (22) (0) and R＿ (2) (t) (thus X＿ (2)) are significantly larger than the first-order values, especially for σ＿Y～2=0.5 and 1.0.
Year: 1997