Author(s): Forrest M. Holly Jr.; Allen Bradley; Benedetta Rocco; John B. Parrish Iii
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Keywords: Powerplant; Cooling; Real-time simulation; Computationalhydraulics; Hydroinformatics; Thermo-hydrodynamic modeling; Unsteadyflow; Contaminant transport
Abstract: This paper describes the development and application of an unsteady thermo hydrodynamic model of a system of nuclear powerplants and their associated riverine and lacustrine cooling resources. The purpose of the model is to predict critical surface-water temperatures over a several day forecast horizon taking into account time-dependent meteorological, hydrologic, and plant-operation data. The temperature forecasts provide decision support for plant personnel who must respect certain river and cooling-lake temperatures in complying with environmental and safety requirements. A unique feature of the one-dimensional unsteady model is its automatic, real-time acquisition of actual and forecast forcing data from internet resources. These actual and forecast data include hydrologic inflows, meteorological parameters, and in situ water-temperature measurements at selected locations. The thermo-hydrodynamic forecast system requires procedures for internal imposition of in situ data where available; detection, reconstruction and repair of missing and anomalous internet data; and procedures for coping with uncertainty in forecasts.
Year: 2001