A one-dimensional line element model for transient free surface flow in porous media

作者：

Highlights：

• A simple and physically sound model is developed to model the transient free surface flow in porous media.

• The 2D transient free surface flow problem is reduced to 1D problem of line element network.

• Numerical accuracy has weak sensitivity of time-step size but sensitive to the spacing size.

• Numerical efficiency can be guaranteed well for different time-step sizes and spacing sizes.

摘要

•A simple and physically sound model is developed to model the transient free surface flow in porous media.•The 2D transient free surface flow problem is reduced to 1D problem of line element network.•Numerical accuracy has weak sensitivity of time-step size but sensitive to the spacing size.•Numerical efficiency can be guaranteed well for different time-step sizes and spacing sizes.

论文关键词：Transient free surface flow,Porous media,Line element model,Numerical simulation

论文评审过程：Received 23 January 2020, Revised 17 July 2020, Accepted 15 October 2020, Available online 28 October 2020, Version of Record 28 October 2020.

论文官网地址：https://doi.org/10.1016/j.amc.2020.125747