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Type: Artigo
Title: Evaluation of silica nanofluids in static and dynamic conditions by an optical fiber sensor
Author: Soares, Marco César Prado
Rodrigues, Matheus Santos
Schenkel, Egont Alexandre
Perli, Gabriel
Silva, Willian Hideak Arita
Gomes, Matheus Kauê
Fujiwara, Eric
Suzuki, Carlos Kenichi
Abstract: This work presents an optical fiber dynamic light scattering sensor capable of simultaneously assessing concentration and flow speed of nanofluids. Silica nanoparticles (189 nm) in water were tested, yielding a sensitivity of 0.78288 × 103s−1 for static conditions. Then, the sensor was submitted to situations that simulate spatial concentration changes, offering better results than those obtained by traditional mathematical models. Finally, in flow tests, the light backscattered by the nanoparticles were collected by a fiber probe placed parallel to the streamline, whereas intensity values were processed by artificial neural networks. The sensor provides average errors of 0.09 wt% and 0.26 cm/s for concentration and speed measurements, respectively, and can be further applied to assess different types of nanofluids and inline processes.
Subject: Tecnologia de fibra óptica
Country: Suíça
Editor: M D P I
Rights: Aberto
Identifier DOI: 10.3390/s20030707
Date Issue: 2020
Appears in Collections:IQ - Artigos e Outros Documentos
IMECC - Artigos e Outros Documentos
FEM - Artigos e Outros Documentos

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