KIT | KIT-Bibliothek | Impressum | Datenschutz

Entropy Generation and Natural Convection Heat Transfer of (MWCNT/SWCNT) Nanoparticles around Two Spaced Spheres over Inclined Plates: Numerical Study

Alfannakh, Huda; Souayeh, Basma ; Hdhiri, Najib; Al Nuwairan, Muneerah; Al-Shaeli, Muayad 1
1 Institut für Mikroverfahrenstechnik (IMVT), Karlsruher Institut für Technologie (KIT)

Abstract:

A numerical study is conducted to evaluate the steady natural convective heat transfer problem and entropy generation of both single wall (SWCNT) and multi wall (MWCNT) nanoparticles with water as a base liquid over two spaced spheres. The isothermally heated spheres are located between two plates of short length. The cooled plates are maintained at different inclination angles. A numerical approach based on the finite volume method and multigrid acceleration was used to solve the governing equations. The effects of nanoparticle type, volume fraction, the inclination angle of the plates and the Rayleigh numbers are well-considered. Results reveal that there is a remarkable enhancement of the average Nusselt number over the plates for MWCNT nanoparticles with 63.15% from the inclination angle 0° to 30°. Furthermore, optimal heat transfer rates over the plates for MWCNT nanoparticles equates to 1.9, which is obtained for the inclination 30° and a Rayleigh number of 106. However, for SWCNT nanoparticles, the same equates 0.9, which is obtained for the inclination 90° and a Rayleigh number of 106. The comprehensive analysis is presented under some well-defined assumptions which show the reliability of the present investigation.

Zugehörige Institution(en) am KIT Institut für Mikroverfahrenstechnik (IMVT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000146687
Erschienen in Energies
Verlag MDPI
Band 15
Heft 7
Seiten Art. Nr.: 2618
Vorab online veröffentlicht am 03.04.2022
Schlagwörter numerical analysis; heat transfer; MWCNT; SWCNT; entropy production; inner spheres; inclination angle; ecological coefficient of performance
Nachgewiesen in Web of Science
Dimensions
OpenAlex
Scopus
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie

Verlagsausgabe §
DOI: 10.5445/IR/1000146687
Veröffentlicht am 24.05.2022
Originalveröffentlichung
DOI: 10.3390/en15072618
Scopus
Zitationen: 6
Web of Science
Zitationen: 5
Dimensions
Zitationen: 6
Seitenaufrufe: 105
seit 25.05.2022
Downloads: 108
seit 25.05.2022
Cover der Publikation
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page