New Unstructured Mesh Water Quality Model for Cooling Water Biocide Discharges

Johannes Lawen, Huaming Yu, Georg Fieg, Ahmed Abdel-Wahab, Tejas Bhatelia

Research output: Contribution to journalArticle

1 Citation (Scopus)


A new unstructured mesh coastal water and air quality model has been developed that includes species transport, nonlinear decay, by-product formation, and mass-exchange between sea and atmosphere. The model has been programmed with a graphical user interface and is applicable to coastal seawater, lakes, and rivers. Focused on species conversion and interaction with the atmosphere, the water and air quality model follows a modular approach. It is a compatible module which simulates distributions based on fluid dynamic field data of underlying existing hydrodynamic and atmospheric simulations. Nonlinear and spline approximations of decay and growth kinetics, by-product formation, and joint sea-atmosphere simulation have been embedded. The Windows application software includes functions allowing error analysis concerning mesh and finite volume approximation. In this work, a submerged residual chlorine cooling water discharge and halogenated matter by-product formation has been simulated. An error analysis has been carried out by varying vertical meshing, time-steps and comparing results based on explicit and implicit finite volume approximation. The new model has been named 3D Simulation for Marine and Atmospheric Reactive Transport, in short 3D SMART.

Original languageEnglish
Pages (from-to)1-17
Number of pages17
JournalEnvironmental Modeling and Assessment
Issue number1
Publication statusPublished - 1 Jan 2014
Externally publishedYes



  • Biocide
  • Chlorination of cooling water
  • Finite volume method
  • Halogenated organic compounds
  • Matrix reordering
  • Water quality model

ASJC Scopus subject areas

  • Environmental Science(all)

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