Análisis de la variabilidad Espacial de los perfiles de velocidad en canales abiertos con elevada rugosidad
Fecha
2021-10
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Universidad de Guayaquil - Facultad de Ciencias Matemáticas y Físicas - Carrera Ingeniería Civil
Resumen
La presente investigación estudia perfiles de velocidad en canales abiertos, los datos evaluados se tomaron en el laboratorio "Grandes Modelos Hidráulicos" de la Universidad de Calabria, se consideró la rugosidad de fondo que afecta el comportamiento del flujo de agua para comparar los perfiles de velocidad y esfuerzo cortante obtenidos en laboratorio con el esfuerzo cortante teórico, se utilizó el programa Matlab para procesar datos y elaborar gráficos. Se realizo la medición de 15 perfiles de velocidad, cada uno aproximadamente de 35 puntos, las pruebas se realizaron en flujo permanente uniforme, los datos de velocidad se procesaron en intervalos de 300s por punto, en cada sección la velocidad varía entre -0.5 m/s y 1.0 m/s, los rangos de velocidad del proceso despiking varían entre -0,2 m/s a 0,7m/s. Concluyendo, los esfuerzos viscosos están en rangos de -0.01 Pa a 0.02 Pa, esfuerzos cortantes turbulentos de -0.5 Pa a 3 Pa y esfuerzos cortantes de -0.5 Pa a 3 Pa.
The present investigation studies velocity profiles in open channels, the evaluated data were taken in the laboratory "Large Hydraulic Models" of the University of Calabria, the background roughness that affects the behavior of the water flow was considered to compare the velocity profiles and shear stress obtained in the laboratory with the theoretical shear stress, the Matlab program was used to process data and develop graphs. The measurement of 15 speed profiles was carried out, each one with approximately 35 points, the tests were carried out in uniform permanent flow, the speed data was processed in an interval of 300s per point, in each section the speed varies between -0.5 m / s and 1.0.m / s, the speed ranges of the despiking process vary between -0.2 m / s to 0.7 m / s. In conclusion, viscous stresses range from -0.01 Pa to 0.02 Pa, turbulent shear stresses from -0.5 Pa to 3 Pa and shear stresses from -0.5 Pa to 3 Pa.
The present investigation studies velocity profiles in open channels, the evaluated data were taken in the laboratory "Large Hydraulic Models" of the University of Calabria, the background roughness that affects the behavior of the water flow was considered to compare the velocity profiles and shear stress obtained in the laboratory with the theoretical shear stress, the Matlab program was used to process data and develop graphs. The measurement of 15 speed profiles was carried out, each one with approximately 35 points, the tests were carried out in uniform permanent flow, the speed data was processed in an interval of 300s per point, in each section the speed varies between -0.5 m / s and 1.0.m / s, the speed ranges of the despiking process vary between -0.2 m / s to 0.7 m / s. In conclusion, viscous stresses range from -0.01 Pa to 0.02 Pa, turbulent shear stresses from -0.5 Pa to 3 Pa and shear stresses from -0.5 Pa to 3 Pa.
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Palabras clave
RUGOSIDAD, PERFILES, DESPIKING, VISCOSIDAD, TURBULENCIA