Evaluación experimental de la técnica de velocimetría por seguimiento de partículas a gran escala para la determinación de caudales en ríos serranos

ANTOINE PATALANO; MARCELO GARCIA; NICOLAS GUILLEN; CESAR GARCIA; ERICA DIAZ; A RODRIGUEZ; A RAVELLO

Aqua-LAC

PHI UNESCO

Lugar: montevideo; Año: 2015 vol. 6 p. 17 - 24

1688-2873

This paper presents a validation of an experimental technique for surface water flows discharge measurements in mountainrivers of the of Córdoba province. The mountain rivers of the Córdoba province are characterized by high temporalvariability defined by the occurrence of flash floods with very high volumes of fast flows (during the rainy season) and thepresence of extended periods of low water conditions with flow rates of the order of a few hundred liters per second whichmakes difficult the selection of an optimal experimental technique for flow discharge measurement for the different flowconditions present during the year. This paper presents an alternative remote experimental technique, estimating flowdischarges in rivers of mountain areas, based on large scale particle tracking velocimetry technique (LS PTV) which canbe applied efficiently in periods of low and medium flow conditions with relatively low cost. The surface flow velocity fieldsampled using LS PTV in a fluvial reach seeded with tracer particles and the cross section bathymetry allow flow dischargeestimation. The proposed experimental technique is validated with results obtained using other experimental techniquessimultaneously in the San Antonio river in the mountainous region of the of Córdoba province, Argentina, at two differentlocations (Cuesta Blanca and Villa Carlos Paz). Finally, a discussion is performed on sources of error involved in the implementationof the LS PTV.