Abstract
Purpose - Natural convective heat transfer in an open gap between concentric quarter spheres has been quantified numerically by means of the volume control method based on the SIMPLE algorithm. The average Nusselt number is determined for several configurations obtained by varying the air gap via the aspect ratio of the cavity in the 0.05- 0.15 range, and the Rayleigh number between 9.22x107 and 2.28x1010.
Design/methodology/approach - Simulations have been done by means of the volume control method based on the SIMPLE algorithm.
Findings/results – New correlation of the Nusselt-Rayleigh type is proposed for thermal sizing of the considered assembly.
Originality/value – The proposed correlation could be applied in many engineering fields, especially in building and electronics.
Design/methodology/approach - Simulations have been done by means of the volume control method based on the SIMPLE algorithm.
Findings/results – New correlation of the Nusselt-Rayleigh type is proposed for thermal sizing of the considered assembly.
Originality/value – The proposed correlation could be applied in many engineering fields, especially in building and electronics.
| Original language | English |
|---|---|
| Journal | International Journal of Numerical Methods in Heat and Fluid Flow |
| Publication status | Acceptance date - 8 Mar 2021 |
Keywords
- Natural convection
- Engineering applications
- Numerical approach
- Concentric quarter spheres
ASJC Scopus subject areas
- Engineering(all)