Effects of Rough Boundaries on RayleighBenard Convection in Nanofluids
- Title
- Effects of Rough Boundaries on RayleighBenard Convection in Nanofluids
- Creator
- Firdose H.; Siddheshwar P.G.; Idris R.
- Description
- A linear stability analysis of RayleighBenard convection in a Newtonian nanofluid is carried out using most general boundary conditions. A single-phase description of nanofluids is adopted in the study. The nanofluids used for the study are wateralumina and watercopper nanofluids in order to analyze how a choice between them can be made. The values of thermophysical quantities of nanofluids are calculated using the mixture theory and phenomenological-laws. The paper applies the Maclaurin series in solving the boundary-eigenvalue-problem through a simple and innovative approach. A single-term Galerkin technique is adopted to obtain the guess value of the critical Rayleigh number and the wave number. Further, improved values of the Rayleigh number and the wave number are obtained using the solution of a system of three linear-algebraic equations. A detailed discussion is made on the effect of rough-boundaries and Robin-boundary conditions for temperature on the onset of convection. A comparative study between the results of two nanofluids is made and the destabilizing effect of nanoparticles in the Newtonian carrier-fluid on the onset of convection is studied. Copyright 2023 by ASME.
- Source
- ASME Journal of Heat and Mass Transfer, Vol-145, No. 6
- Date
- 2023-01-01
- Publisher
- American Society of Mechanical Engineers (ASME)
- Coverage
- Firdose H., Centre for Mathematical Needs, Mathematics Department, CHRIST (Deemed to be University), Bengaluru, 560029, India; Siddheshwar P.G., Centre for Mathematical Needs, Mathematics Department, CHRIST (Deemed to be University), Bengaluru, 560029, India; Idris R., Special Interest Group of Modelling and Data Analytics, Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, 21030, Malaysia
- Rights
- Restricted Access
- Relation
- ISSN: 28328450
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Firdose H.; Siddheshwar P.G.; Idris R., “Effects of Rough Boundaries on RayleighBenard Convection in Nanofluids,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/14186.