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Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry

Feldle, Christian · RI ITBA · 2019

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"This thesis contains measurements of flow velocity fields inside the blade channel of a centrifugal fan by using Particle Image Velocimetry (PIV), an optical method for flow vis-ualization. The results are analyzed and compared to previous experiments. It concludes that they show a good compliance and quality. Beforehand, the fan’s characteristic curve and efficiency are determined and validated with preceding investigations. The results show a distinctive conformity with previous experi-ments and a good match with existing simulation data done by the Institute of Fluid Ma-chinery. The measurements are done at different speeds to proof the scalability. The power-train and the mounting for the camera and laser used for the experiments were modified to improve the quality of the data and to simplify the procedure of the PIV experiment. PIV measurements are measured at the points of maximum efficiency, partial load and full load, whose position on the characteristic curve were determined previously. The rotational speed is not varied in the PIV experiment, but in comparison to previous works, where only one fixed plane in the blade channel was measured, multiple planes are measured. This allows to visualize the flow in more depth and a profound knowledge about the flow con-ditions can be gathered." "Esta Tesis presenta medidas de los campos de velocidad de flujo de partículas dentro del canal de aspas de un ventilador centrifugo usando Velocímetría de Partículas por Imágenes (PIV, por sus siglas en ingles), un método óptico para la visualización del flujo. Se concluyen que las mismas presentan buena adecuación y calidad. Previamente, la curva característica y eficiencia del ventilador fueron determinadas y validadas por investigaciones precedentes. Los datos obtenidos muestran una destacable concordancia con experimentos previos y una buena coincidencia con datos simulados existentes, hechos por el Instituto de Maquinaria de Fluidos, respectivamente. Las mediciones fueron llevadas a cabo a diferentes velocidades para probar su escalabilidad. El sistema de accionamiento y montaje de la cámara y laser usados para los experimentos fueron modificados para mejorar la calidad de los resultados y simplificar el procedimiento del experimento PIV. Las mediciones PIV fueron hechas en los puntos de máxima eficiencia, carga parcial y carga total, los cuales fueron determinados con anterioridad. La velocidad rotacional no fue variada du-rante los experimentos PIV, pero a diferencia de trabajos anteriores donde se realizaron mediciones un solo plano fijo en el canal del aspa, en el presente se realizaron mediciones en múltiples planos. Esto permitió visualizar el flujo en 3D con el uso de interpolación y pudieron recolectarse conocimientos profundos acerca de las condiciones de flujo." Tesis Energía y Ambiente (maestría) - Instituto Tecnológico de Buenos Aires, Buenos Aires - Karlsruher Institut für Technologie, Karlsruhe, 2018

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APA 7

Feldle, C. (2019). Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry. RI ITBA. http://ri.itba.edu.ar/handle/20.500.14769/1571

MLA

Feldle, Christian. Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry. RI ITBA, 2019. http://ri.itba.edu.ar/handle/20.500.14769/1571.

Chicago

Feldle, Christian. 2019. Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry. RI ITBA. http://ri.itba.edu.ar/handle/20.500.14769/1571.

Harvard

Feldle, C. 2019, Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry, RI ITBA, available at: http://ri.itba.edu.ar/handle/20.500.14769/1571 [Accessed 8 Aug. 2026].

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Title
Measurements of velocity fields in a centrifugal fan by means of particle image velocimetry
Author / contributors
Feldle, Christian
Publisher
RI ITBA
Publication year
2019
Language
English

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