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Naslov:Downscaling of sample entropy of nanofluids by carbon allotropes : a thermal lens study
Avtorji:ID Swapna, Mohanachandran Nair Sindhu (Avtor)
ID Raj, Vimal (Avtor)
ID Sreejyothi, S. (Avtor)
ID Satheesh Kumar, K. (Avtor)
ID Iyer Sankararaman, Sankaranarayana (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The work reported in this paper is the first attempt to delineate the molecular or particle dynamics from the thermal lens signal of carbon allotropic nanofluids (CANs), employing time series and fractal analyses. The nanofluids of multi-walled carbon nanotubes and graphene are prepared in base fluid, coconut oil, at low volume fraction and are subjected to thermal lens study. We have studied the thermal diffusivity and refractive index variations of the medium by analyzing the thermal lens (TL) signal. By segmenting the TL signal, the complex dynamics involved during its evolution is investigated through the phase portrait, fractal dimension, Hurst exponent, and sample entropy using time series and fractal analyses. The study also explains how the increase of the photothermal energy turns a system into stochastic and anti-persistent. The sample entropy (S) and refractive index analyses of the TL signal by segmenting into five regions reveal the evolution of S with the increase of enthalpy. The lowering of S in CAN along with its thermal diffusivity (50%–57% below) as a result of heat-trapping suggests the technique of downscaling sample entropy of the base fluid using carbon allotropes and thereby opening a novel method of improving the efficiency of thermal systems.
Ključne besede:carbon allotropic nanofluids, time series, entropy, MWCNT, thermal lens signal
Leto izida:2020
Št. strani:str. 073116-1-07311-9
Številčenje:Vol. 30, iss. 7
PID:20.500.12556/RUNG-7402 Novo okno
COBISS.SI-ID:113296387 Novo okno
UDK:53
ISSN pri članku:1054-1500
DOI:10.1063/5.0009756 Novo okno
NUK URN:URN:SI:UNG:REP:D8C7QSRX
Datum objave v RUNG:30.06.2022
Število ogledov:2529
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
SWAPNA, Mohanachandran Nair Sindhu, RAJ, Vimal, SREEJYOTHI, S., SATHEESH KUMAR, K. in IYER SANKARARAMAN, Sankaranarayana, 2020, Downscaling of sample entropy of nanofluids by carbon allotropes : a thermal lens study. Chaos [na spletu]. 2020. Vol. 30, no. 7, p. 073116-1- 07311–9. [Dostopano 7 april 2025]. DOI 10.1063/5.0009756. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=7402
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Gradivo je del revije

Naslov:Chaos
Skrajšan naslov:Chaos
Založnik:American Institute of Physics
ISSN:1054-1500
COBISS.SI-ID:2800167 Novo okno

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