An open source massively parallel solver for Richards equation: Mechanistic modelling of water fluxes at the watershed scale

Abstract In this paper we present a massively parallel open source solver for Richards equation, named the RichardsFOAM solver. This solver has been developed in the framework of the open source generalist computational fluid dynamics tool box OpenFOAM^®and is capable to deal with large scale problems in both space and time. The source code for RichardsFOAM may be downloaded from the CPC program library website. It exhibits good parallel performances (up to ∼90% parallel efficiency with 1024 process... Title of program: RichardsFOAM Catalogue Id: AEUF_v1_0 Nature of problem This software solves the non-linear three-dimensional transient Richards equation, which is a very popular model for water transfer in variably saturated porous media (e.g.: soils). It is designed to take advantage of the massively parallel computing performance of OpenFOAM®. The goal is to be able to model natural hydrosystems on large temporal and spatial scales. Versions of this program held in the CPC repository in Mendeley Data AEUF_v1_0; RichardsFOAM; 10.1016/j.cpc.2014.08.004 AEUF_v2_0; RichardsFoam2; 10.1016/j.cpc.2015.07.009 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)摘要 本文提出一款针对理查兹方程（Richards equation）的大规模并行开源求解器，命名为RichardsFOAM求解器。本求解器基于开源通用计算流体动力学工具箱OpenFOAM®开发，可处理时空维度下的大规模问题，其源代码可从CPC程序库官网下载。该求解器具备优异的并行性能，在使用1024个计算核心时可实现最高约90%的并行效率…… 程序名称：RichardsFOAM 程序目录编号：AEUF_v1_0 问题性质 本软件用于求解非线性三维瞬态理查兹方程，该方程是描述变饱和多孔介质（如土壤）中水分运移的经典模型。本求解器充分利用OpenFOAM®的大规模并行计算能力开发，目标是实现大时空尺度下的自然水文系统模拟。 Mendeley数据平台CPC库中收录的本程序版本： AEUF_v1_0；RichardsFOAM；10.1016/j.cpc.2014.08.004 AEUF_v2_0；RichardsFoam2；10.1016/j.cpc.2015.07.009 本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2018）