Characterization of artificial rainfall produced by a portable rainfall simulator using a rotating dynamic rainfall gauge system.
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| Title: | Characterization of artificial rainfall produced by a portable rainfall simulator using a rotating dynamic rainfall gauge system. |
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| Authors: | de Sousa Costa, Antônio Reynaldo1 (AUTHOR), Alves Alvarenga, Lívia1 (AUTHOR) livia.aalvarenga@ufla.br, Thebaldi, Michael Silveira1 (AUTHOR), Lima, Luiz Antonio1 (AUTHOR), Colombo, Alberto1 (AUTHOR), Green, Daniel2 (AUTHOR), Isidoro, Jorge M. G. P.3,4 (AUTHOR) |
| Source: | Hydrological Sciences Journal/Journal des Sciences Hydrologiques. Jul2024, Vol. 69 Issue 9, p1218-1227. 10p. |
| Subjects: | Rainfall simulators, Spray nozzles, Kinetic energy, Rainfall, Precipitation gauges |
| Abstract: | Rainfall properties and drop spectra characterization is essential when designing and using rainfall simulators to properly replicate natural rainfall characteristics. This study considered a small-scale rainfall simulator operating under varying nozzle, pressure and rotating disc scenarios. A dynamic rainfall gauge system developed at the Federal University of Lavras was used to quantify the impact velocity of rainfall droplets and kinetic energy, and to conduct radial uniformity analyses. The results showed that the rainfall intensity, impact velocity of droplets, kinetic energy, and uniformity of distribution of rainfall are influenced by effects of the spray nozzle, operating pressure and the rotating disc opening of the rainfall simulator. Lower values of simulated rainfall kinetic energy were observed compared to the empirical natural rainfall kinetic energy at equivalent rainfall intensities. This paper highlights the influence of rainfall simulator design specifications on resultant rainfall spectra and validates simulated rainfall against empirically based natural rainfall characteristics. [ABSTRACT FROM AUTHOR] |
| Copyright of Hydrological Sciences Journal/Journal des Sciences Hydrologiques is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Rainfall properties and drop spectra characterization is essential when designing and using rainfall simulators to properly replicate natural rainfall characteristics. This study considered a small-scale rainfall simulator operating under varying nozzle, pressure and rotating disc scenarios. A dynamic rainfall gauge system developed at the Federal University of Lavras was used to quantify the impact velocity of rainfall droplets and kinetic energy, and to conduct radial uniformity analyses. The results showed that the rainfall intensity, impact velocity of droplets, kinetic energy, and uniformity of distribution of rainfall are influenced by effects of the spray nozzle, operating pressure and the rotating disc opening of the rainfall simulator. Lower values of simulated rainfall kinetic energy were observed compared to the empirical natural rainfall kinetic energy at equivalent rainfall intensities. This paper highlights the influence of rainfall simulator design specifications on resultant rainfall spectra and validates simulated rainfall against empirically based natural rainfall characteristics. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 02626667 |
| DOI: | 10.1080/02626667.2024.2368266 |
