Thermal state of a concentric quarter spherical enclosure subjected to air free convection
| Autor: | J.A. Millán-García, A. Martín-Garín, Adrian Ilinca, Nacim Alilat, A. Baïri |
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| Rok vydání: | 2021 |
| Předmět: |
Natural convection
Materials science Enclosure 02 engineering and technology Mechanics Rayleigh number Concentric 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Aspect ratio (image) 010406 physical chemistry 0104 chemical sciences Thermal SPHERES Physical and Theoretical Chemistry 0210 nano-technology SIMPLE algorithm |
| Zdroj: | Journal of Thermal Analysis and Calorimetry. 147:3703-3708 |
| ISSN: | 1588-2926 1388-6150 |
| DOI: | 10.1007/s10973-021-10739-w |
| Popis: | The average temperature difference between the walls of a cavity consisting of two concentric quarter spheres and subjected to an air natural convective flow was determined. The work was performed numerically through volume control method based on the SIMPLE algorithm. The thermal state was determined for several combinations of the aspect ratio varying from 0.05 to 0.35 and Rayleigh number with elevated values reaching 6.76 × 1011. A new correlation has been proposed, allowing thermal sizing of this type of cavity which could be used in different fields of engineering such as electronics and building. |
| Databáze: | OpenAIRE |
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