Calibration of a Water Quality Model Using the Influence Coefficient Algorithm

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by Kyung Soo Jun, (A.M.ASCE),
Kil Seong Lee,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water:

Abstract: A methodology based on the influence coefficient algorithm was established for the calibration of QUAL2E reaction coefficients. It was applied to the stream sections of the South Han River located in South Korea. Simulated quality constituents were chl. nitrogen series, phosphorus series, BOD and DO. A sensitivity analysis was made to determine significant reaction coefficients, and as a result, 11 calibration parameters were selected. The influence coefficient algorithm applied to the calibration of QUAL2E reaction coefficients proved to be a useful one yielding a rapid convergence. Each calibration parameter converged to an optimum value within 3 iterations.

Subject Headings: Water quality | Calibration | Algorithms | Hydrologic models | Water use | Sensitivity analysis | Parameters (statistics) | Rivers and streams | Nitrogen | Phosphorus | Convergence (mathematics) | Asia | South Korea

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