TY - JOUR

T1 - A Subregion Block Iteration to 3-D Finite Element Modeling of Subsurface Flow

AU - Yeh, G. T.

N1 - Funding Information:
This research is supported by the Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee. ESD Publication No. 3064.

PY - 1988/1

Y1 - 1988/1

N2 - A subregion block iteration (SBI) technique has been developed in conjunction with finite element approximations of saturated-unsaturated flow equations. The proposed SBI technique is implemented in a three-dimensional finite element saturated-unsaturated flow model. The model is verified with a nonlinear diffusion equation having an analytical solution. It is then applied to a burial trench problem. It is not possible to solve this field problem using the direct elimination finite element method. The SBI technique provides significant improvement over models based on direct band solution methods in both central processing unit (CPU) storage and CPU time.

AB - A subregion block iteration (SBI) technique has been developed in conjunction with finite element approximations of saturated-unsaturated flow equations. The proposed SBI technique is implemented in a three-dimensional finite element saturated-unsaturated flow model. The model is verified with a nonlinear diffusion equation having an analytical solution. It is then applied to a burial trench problem. It is not possible to solve this field problem using the direct elimination finite element method. The SBI technique provides significant improvement over models based on direct band solution methods in both central processing unit (CPU) storage and CPU time.

UR - http://www.scopus.com/inward/record.url?scp=77957015646&partnerID=8YFLogxK

U2 - 10.1016/S0167-5648(08)70329-0

DO - 10.1016/S0167-5648(08)70329-0

M3 - 期刊論文

AN - SCOPUS:77957015646

VL - 35

SP - 133

EP - 138

JO - Developments in Water Science

JF - Developments in Water Science

SN - 0167-5648

IS - C

ER -