Adaptive Time Stepping–Operator Splitting Strategy to Couple Implicit Numerical Hydrodynamic and Water Quality Codes

AbstractHydrodynamic and water quality codes have been frequently linked. These have typically been linked with both the hydrodynamic and water quality models using similar explicit time steps, but for long-term simulations implicit models are required. The water quality codes linked to these hydrod...

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Bibliographic Details
Published inJournal of environmental engineering (New York, N.Y.) Vol. 138; no. 9; pp. 979 - 984
Main Authors Savant, Gaurav, Berger, R. C
Format Journal Article
LanguageEnglish
Published Reston, VA American Society of Civil Engineers 01.09.2012
Subjects
Applied sciences
Computational fluid dynamics
Exact sciences and technology
Exact solutions
Fluid flow
Hydrodynamics
Mathematical models
Pollution
Splitting
Strategy
Technical Note
Technical Notes
Water quality
Transport process
Sediment
ADH
Hydraulics
Water quality
Hydrodynamics
Runge-Kutta
Implicit
Sediments
Adaptive hydraulics
Long term
Modeling
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Summary:AbstractHydrodynamic and water quality codes have been frequently linked. These have typically been linked with both the hydrodynamic and water quality models using similar explicit time steps, but for long-term simulations implicit models are required. The water quality codes linked to these hydrodynamic codes are forced to perform their computations using the hydrodynamic time step even though utilizing the same might result in drifting of the water quality solution. This technical note presents the development and testing of an operator splitting–derived method for linking hydrodynamic and water quality codes with adaptive time stepping. The resulting method provides high-fidelity solutions that compare well with analytic solutions and lends itself for extension to various other transported quantities.
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ISSN:0733-9372
1943-7870
DOI:10.1061/(ASCE)EE.1943-7870.0000547