Fractional step solution to slack tide oxygen balance equation

Chi Wai Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)


A time-stepping split-operator method is developed to obtain the steady-state solution of the slack tide oxygen balance equation, which takes different formulations at the aerobic and the anaerobic regions, while the direct iterative solution of the steady-state equation can lead to an oscillatory behaviour. The method treats the advection step by the minimax characteristics method, the dispersion step by the central difference method, and the decay step by an analytical solution. Using a large time step (1 tidal cycle) to be compatible with the model formulation, the solution obtained is in good agreement with the exact solution and the computational effort is low.
Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalCommunications in Applied Numerical Methods
Issue number2
Publication statusPublished - 1 Jan 1992

ASJC Scopus subject areas

  • Engineering(all)

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