Chander, Subhash et Kumar, Neeraj.
2025.
« Non-boiling heat transfer characteristics of water sprays impinging on a heated surface ».
In Proceedings of the CSME-CFDSC-CSR 2025 International Congress (Montreal, QC, Canada, May 25-28, 2025)
Coll. « Progress in Canadian Mechanical Engineering », vol. 8.
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Résumé
An experimental study has been carried out to investigate the non-boiling heat transfer characteristics of water spray impinging on a heated surface. The spray was generated by using full-cone commercial water spray nozzles of different diameters. The heat transfer characteristics of water spray were investigated at fixed surface temperature boundary condition (50oC). Experiments were conducted to investigate the effect of mass flux of spraying water on heat transfer coefficient. It was found that heat transfer increases with increase in mass flux because of increase in liquid velocity resulting in increase in perturbation of thin liquid layer due to impinging droplets. Nozzles having smaller orifice diameter show higher in heat transfer coefficient because of combined effect of evaporation and forced convection. A strong splashing and droplet rebounding occur in case of smaller orifice diameter nozzle at higher mass fluxes. In case of large orifice diameter nozzle, a thicker liquid film is developed over the heated surface and heat transfer is due to turbulence created by striking droplets on this thick-film. Nozzles having larger orifice diameter show less dependence on evaporation and whole the heat transfer process was due to forced convection. Finally, non-dimensional correlations were developed for Reynolds number and Nusselt number for local heat transfer coefficient.
| Type de document: | Compte rendu de conférence |
|---|---|
| Éditeurs: | Éditeurs ORCID Hof, Lucas A. NON SPÉCIFIÉ Di Labbio, Giuseppe NON SPÉCIFIÉ Tahan, Antoine NON SPÉCIFIÉ Sanjosé, Marlène NON SPÉCIFIÉ Lalonde, Sébastien NON SPÉCIFIÉ Demarquette, Nicole R. NON SPÉCIFIÉ |
| Date de dépôt: | 18 déc. 2025 15:08 |
| Dernière modification: | 18 déc. 2025 15:08 |
| URI: | https://espace2.etsmtl.ca/id/eprint/32369 |
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