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| Titel: |
EXPERIMENTS ON CONVECTIVE HEAT TRANSFER IN CORRUGATED CHANNELS |
| Auteur: |
Ali, M. M. Ramadhyani, S. |
| Verschenen in: |
Experimental heat transfer |
| Paginering: | Jaargang 5 (1992) nr. 3 pagina's 175-193 |
| Jaar: |
1992-07-01 |
| Inhoud: |
Experiments have been performed to study convective heat transfer in the entrance region of corrugated channels. With water as the working fluid, two channel spacings were examined for a single corrugation angle of 20°. The flow rate was varied over the range I50 ≤ Re ≤ 4000. Flow visualization under low-Reynolds-number flow conditions suggested the presence of longitudinal vortices, while at somewhat higher Reynolds numbers, the existence of spanwise vortices was clearly revealed. For Re > 1500, Nusselt numbers in the corrugated channels exceeded those in the parallel-plate channel by approximately 140% and 240% for the two channel spacings, the corresponding increases in friction factor being 130% and 280%. Performance evaluations under the criteria of equal mass flow rate, equal pumping power, and equal pressure drop per unit length established both the corrugated channels as superior to the parallel-plate channel in intensifying heat transfer. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 1 van 5 gevonden artikelen
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