Open AccessSurface runoff model in Gera Software: parallel implementation and surface-subsurface coupling
Author(s) -
Vasily K. Kramarenko,
Konstantin Novikov
Publication year - 2020
Publication title -
mathematica montisnigri
Language(s) - English
Resource type - Journals
eISSN - 2704-4963
pISSN - 0354-2238
DOI - 10.20948/mathmontis-2020-49-6
Subject(s) - solver , software , computational science , coupling (piping) , surface (topology) , computer science , surface runoff , nonlinear system , subsurface flow , mathematics , engineering , physics , geometry , mechanical engineering , geotechnical engineering , programming language , biology , groundwater , ecology , quantum mechanics
In this article we present a mathematical model used for surface runoff simulation in GeRa software. The model is based on diffusive wave approximation for the shallow water equations with Manning formula for flow velocity estimation. It is implemented using INMOST software platform for parallel mathematical modeling. Parallel efficiency of the model implementation is adressed for some widely used verification benchmarks. We also present surface-subsurface coupling approach used in GeRa software and discuss practical aspects of the nonlinear solver.