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Abstract
El presente trabajo de investigación tuvo como finalidad la calibración del coeficiente de rugosidad de Manning en cuencas rurales no instrumentadas mediante un modelo hidrológico distribuido. El proceso consistió en la elección de varias cuencas con cobertura vegetal de bosques y pastos, y su posterior estudio numérico experimental en donde el hidrograma de respuesta hidrológica de cada cuenca de referencia fue obtenido del software HEC-HMS y el hidrograma a calibrarse fue el del software Iber, el cual es un modelo hidrodinámico basado en las ecuaciones de Saint Venant bidimensionales, resueltas mediante el método de volúmenes finitos. Una vez llevado a cabo el proceso de calibración, se identificaron los coeficientes de rugosidad con mejor ajuste para cada cuenca con incrementos de precipitación, identificándose las limitaciones de estos valores y del modelo patrón empleado.
The purpose of this research work was to calibrate the Manning's roughness coefficient in rural non-instrumented basins using a distributed hydrological model. The process consisted of the selection of several basins with vegetal cover of forests and grasslands, and its subsequent experimental numerical study, in which the hydrological response hydrograph of each reference basin was obtained from the HEC-HMS software and the hydrograph to be calibrated was the Iber software, which is a hydrodynamic model based on the two-dimensional Saint Venant equations, solved by the finite volume method. Once the calibration process was carried out, the roughness coefficients with the best fit for each basin were identified with increases in precipitation, identifying the limitations of these values and the standard model used.
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