Finite Volume Simulation of mixed convection in an inclined lid-driven cavity filled with nanofluids: Effects of a hot elliptical centric cylinder, cavity angle and volume fraction of nanoparticles

Abdullah A.A.A. Al-Rashed, Amin Shahsavar, Mohammad Akbari, Davood Toghraie, Mohammadreza Akbari and Masoud Afrand

Physica A: Statistical Mechanics and its Applications, 2019, vol. 527, issue C

Abstract: In this study, the mixed convection of nanofluid containing water as a base fluid and aluminum oxide as a nanoparticles in a lid-driven cavity including a hot elliptical centric cylinder is studied. The effects of a hot elliptical centric cylinder, cavity angle (α) and solid volume fraction (ϕ) of nanoparticles are investigated. The obtained results show that with increase of solid volume fraction and due to more condensation of nanofluid and more Brownian motion, the claustration phenomena occurred and resulting an increase of thermal conductivity and convection heat transfer coefficients (k, h) and heat transferred more from the higher temperature surface to the lower temperature wall. Also, heat transfer (q) and Nusselt number (Nu) increased due to the increase in the temperature difference (ΔT) between the hot cylinder and lower temperature surfaces at a constant cavity angle, solid volume fraction and Richardson number (Ri). By considering all diagrams, the highest value of nanofluid’s velocity was around the cap and right-side wall and the lowest velocity value was around the thermal cylinder and left side and down walls. The results show that the increase rate of the Nu from 0 to 45∘ in ϕ=0.1% and 0.2% and base fluid is equal to 1.7, 0.8 and 0.3 respectively.

Keywords: Mixed convection heat transfer; Cavity angle; Elliptical centric cylinder; Richardson number; Volume fraction of nanoparticles (search for similar items in EconPapers)
Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437119306788
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:527:y:2019:i:c:s0378437119306788

DOI: 10.1016/j.physa.2019.121122

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().