Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface

Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface

The objective of this study is to estimate the flow from the speedometer technique for large-scale particle images in free surface flow. The work consisted in the recording of videos in three campaigns, then these were extracted and processed for the calculation of the average surface velocity and f...

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Principais autores: Rosas Flores, Fredy Sandro, Tejeda Flores, Shirley Pamela, Canaza Rojas, Ferrer
Formato: Online
Idioma:spa
Publicado em: Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil 2021
Acesso em linha:https://revistas.uclave.org/index.php/gt/article/view/3104
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spelling oai:ojs2.revistas.uclave.org:article-31042021-04-28T21:56:00Z Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface Estimación del caudal a partir de la técnica de velocimetría por imágenes de partículas a gran escala aplicado en flujo a superficie libre Rosas Flores, Fredy Sandro Tejeda Flores, Shirley Pamela Canaza Rojas, Ferrer técnica LSPIV medición hidrológica hidrodinámica LSPIV technique hydrological measurement hydrodynamics The objective of this study is to estimate the flow from the speedometer technique for large-scale particle images in free surface flow. The work consisted in the recording of videos in three campaigns, then these were extracted and processed for the calculation of the average surface velocity and finally the estimation of the flow, using open source software RIVeR and PIVlab. Velocity profiles were obtained for different types of tracers and heights; the flows with foam tracers presented adequate velocity profiles, the flows with polystyrene tracers were adequate only at 2.00 m in height and without tracers they showed adequate profiles only at 1.50 m, the product of the average surface velocity, area and mean velocity coefficient gives flow rates for each case studied. In conclusion, liquid soap foam tracers had higher flow rates, due to the adequate definition of the velocity profile curve and the greater magnitudes of velocity vectors. Therefore, the LSPIV technique proved to be simple, adaptable and affordable to find flow rates and speed rates Este estudio tiene como objetivo estimar el caudal a partir de la técnica de velocimetría por Imágenes de Partículas a Gran Escala en flujo a superficie libre. El trabajo consistió en la grabación de videos en tres campañas, luego estas fueron extraídas y procesadas para el cálculo de la velocidad superficial media y finalmente la estimación del caudal, utilizando software de código abierto RIVeR y PIVlab. Se obtuvieron perfiles de velocidad para diferentes tipos de trazadores y alturas; los flujos con trazadores de espuma presentaron adecuados perfiles de velocidad, los flujos con trazadores de poli estireno fueron adecuados sólo a 2,00 m de altura y sin trazadores mostraron perfiles adecuados solo a 1,50 m, el producto de la velocidad superficial media, área y coeficiente de velocidad media da como resultado caudales para cada caso estudiado. En conclusión, los trazadores de espuma de jabón líquido presentaron mayores caudales, debido a la adecuada definición de la curva de perfil de velocidad y las mayores magnitudes de vectores de velocidad. Por lo tanto, la técnica LSPIV mostró ser sencilla, adaptable y asequible para conocer velocidades y caudales del flujo Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil 2021-01-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo científico de investigación original application/pdf https://revistas.uclave.org/index.php/gt/article/view/3104 Gaceta Técnica; Vol. 22 No. 1 (2021): Vol. 22 Núm. 1 (2021): January-June; 53-65 Gaceta Técnica; Vol. 22 Núm. 1 (2021): Vol. 22 Núm. 1 (2021): Enero-Junio; 53-65 Gaceta Técnica; v. 22 n. 1 (2021): Vol. 22 Núm. 1 (2021): January-June; 53-65 2477-9539 spa https://revistas.uclave.org/index.php/gt/article/view/3104/1931 https://revistas.uclave.org/index.php/gt/article/view/3104/1932 https://revistas.uclave.org/index.php/gt/article/view/3104/1933 https://creativecommons.org/licenses/by-nc-sa/4.0
institution Universidad Centroccidental Lisandro Alvarado
collection OJS
language spa
format Online
author Rosas Flores, Fredy Sandro
Tejeda Flores, Shirley Pamela
Canaza Rojas, Ferrer
spellingShingle Rosas Flores, Fredy Sandro
Tejeda Flores, Shirley Pamela
Canaza Rojas, Ferrer
Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
author_facet Rosas Flores, Fredy Sandro
Tejeda Flores, Shirley Pamela
Canaza Rojas, Ferrer
author_sort Rosas Flores, Fredy Sandro
title Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
title_short Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
title_full Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
title_fullStr Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
title_full_unstemmed Flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
title_sort flow estimation from the speedometry technique by images of large-scale particles applied in flow to a free surface
description The objective of this study is to estimate the flow from the speedometer technique for large-scale particle images in free surface flow. The work consisted in the recording of videos in three campaigns, then these were extracted and processed for the calculation of the average surface velocity and finally the estimation of the flow, using open source software RIVeR and PIVlab. Velocity profiles were obtained for different types of tracers and heights; the flows with foam tracers presented adequate velocity profiles, the flows with polystyrene tracers were adequate only at 2.00 m in height and without tracers they showed adequate profiles only at 1.50 m, the product of the average surface velocity, area and mean velocity coefficient gives flow rates for each case studied. In conclusion, liquid soap foam tracers had higher flow rates, due to the adequate definition of the velocity profile curve and the greater magnitudes of velocity vectors. Therefore, the LSPIV technique proved to be simple, adaptable and affordable to find flow rates and speed rates
publisher Universidad Centroccidental Lisandro Alvarado - Decanato de Ingeniería Civil
publishDate 2021
url https://revistas.uclave.org/index.php/gt/article/view/3104
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