Steam Temperature Prediction under Reduced Flow

by William L. Morse, Mathematician; Bonneville Power Admin., U.S. Dept. of the Interior, Portland, OR,

Serial Information: Journal of the Hydraulics Division, 1972, Vol. 98, Issue 6, Pg. 1031-1047

Document Type: Journal Paper


The thermal energy conservation equation in the form of a quasilinear partial differential equation, having been previously validated on the Columbia River, is here calibrated on a 5-mile reach of the Little Deschutes River for a 9-day period (July 29 - August 6, 1969) treated as three 3-day episodes. With 3-hr unit hydrodynamic-meteorologic data, the water temperature prediction capability of this dynamic deterministic one-dimensional model is on the average within 0.4DF. Signally, this accuracy was accomplished under both parametric and nonparametric statistical validity tests which indicate a certain level of acceptance; and, drought conditions in the form of fractionally reproduced flow caused this mathematical model to respond as expected.

Subject Headings: Parameters (statistics) | Temperature effects | Hydrologic models | Thermal power | Rivers and streams | Dynamic models | Mathematical models | Model accuracy

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