Coupled Surface-Subsurface Flow Modelling Using the GeRa Software

被引：3
|
作者：
Novikov, K. [1 ]
Kapyrin, I. [1 ,2 ]
机构：
[1] Russian Acad Sci, Marchuk Inst Numer Math, Moscow 119333, Russia
[2] Russian Acad Sci, Nucl Safety Inst, Moscow 115191, Russia
来源：
LOBACHEVSKII JOURNAL OF MATHEMATICS | 2020年 / 41卷 / 04期
关键词：
surface runoff; groundwater; surface-subsurface interaction; numerical simulation; 1ST-ORDER EXCHANGE COEFFICIENT; HYDRAULIC CONDUCTIVITY; OVERLAND-FLOW; WATER; HYDROLOGY; EQUATION; ENERGY; GEOTOP;
D O I：
10.1134/S1995080220040162
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Mathematical model and numerical methods for the solution of coupled surface-subsurface flow in GeRa software is presented. Coupling of surface runoff and subsurface flow models is accomplished using first-order exchange term. The arising nonlinear solver convergence issues are addressed in the article. In order to overcome these issues, approaches for handling the surface-subsurface flux expression are introduced. The proposed numerical model is verified and validated using benchmarks with reference solutions obtained in different codes as well as experimental results.
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页码：538 / 551
页数：14
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