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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
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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