Environmental Modeling & Assessment

, Volume 19, Issue 1, pp 1–17 | Cite as

New Unstructured Mesh Water Quality Model for Cooling Water Biocide Discharges

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


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.


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



This publication was made possible by NPRP grant # 29-6-7-39 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Johannes Lawen
    • 1
    • 2
  • Huaming Yu
    • 1
  • Georg Fieg
    • 2
  • Ahmed Abdel-Wahab
    • 1
  • Tejas Bhatelia
    • 1
  1. 1.Texas A&M University at QatarDohaQatar
  2. 2.Hamburg University of TechnologyHamburgGermany

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