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- Title
Examination of the nanofluid convective instability of vertical constant throughflow in a porous medium layer with variable gravity.
- Authors
Yadav, Dhananjay; Chu, Yu-Ming; Li, Z.
- Abstract
In the current article, the impact of varying gravitational field and flow on the beginning of nanofluid convective instability in a permeable medium layer is studied numerically utilizing Galerkin technique. The permeable layer is directed to a regular vertical throughflow and irregular descendent gravitational force which changes with the length from the layer. The influences of three types of gravitational force inconsistency: (a) linear, (b) parabolic, and (c) exponential are examined on the formation of nanofluid convective instability with vanish nanoparticle flux condition at the plates. Results proved that the throughflow factor Q and gravity inconsistency factor δ suspend the start of convective instability, while the nanoparticle Rayleigh-Darcy number R np and the altered diffusivity ratio NA nf quick the start of nanofluid convection. The measurement of the convective cells diminishes with R np and NA nf , while Q , δ and the altered nanofluid Lewis number Le nf have duel effects on the measurement of convective cells.
- Subjects
THERMAL instability; POROUS materials; GRAVITY; NANOFLUIDS; GRAVITATIONAL fields; GRAVITATION; NANOPARTICLES
- Publication
Applied Nanoscience, 2023, Vol 13, Issue 1, p353
- ISSN
2190-5509
- Publication type
Article
- DOI
10.1007/s13204-021-01700-2