Two-dimensional flow and hydrogeochemical transport model

Hwai Ping Cheng, Gour Tsyh Yeh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


A two-dimensional flow and hydrogeochemical transport model is designed for estimating the movement and attenuation of chemicals after they are released into subsurface systems. This model combines the flow of groundwater and the transport of multispecies-multicomponent chemical systems. The flow of groundwater is calculated basically according to the updated FEMWATER model, which solves the Richards' equation by the finite element method. The transport of chemicals is determined by modifying the LEHGC code which solves the coupled geochemical equilibrium and hydrological transport equations using the Lagrangian-Eulerian approach. The modification is made by casting the multicomponent transport equations in a modified implicit iteration form, and the retarded velocities are used in the Lagrangian step rather than the fluid velocities used in the LEHGC code. The model is verified by several examples.

Original languageEnglish
Title of host publicationProceedings of the Symposium on Engineering Hydrology
PublisherPubl by ASCE
Number of pages6
ISBN (Print)087262921X
StatePublished - 1993
EventProceedings of the Symposium on Engineering Hydrology - San Francisco, CA, USA
Duration: 25 Jul 199330 Jul 1993

Publication series

NameProceedings of the Symposium on Engineering Hydrology


ConferenceProceedings of the Symposium on Engineering Hydrology
CitySan Francisco, CA, USA


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