Local heat transfer and pressure drop measurements in a wavy channel with and without flow disturbers
- Western New England College, Springfield, MA (United States)
- Southern Illinois Univ., Edwardsville, IL (United States)
Experiments have been performed to measure local heat transfer coefficients and pressure drop in a wavy channel for Reynolds numbers of 2,900 and 7,000. Additionally, the effect of flow disturbers mounted on the first two peaks on one surface was investigated. The transient method and liquid crystals were used for the local heat transfer measurements. Initial experimental results indicate that addition of ribs into the passage stimulates flow instabilities which enhance the heat transfer performance with moderate effect on pressure drop. Measurements were conducted on a 6 in x 3/8 in x 12 in wavy channel with a wave length of one inch. The highest local heat transfer was detected on the second, followed by the third and fourth peaks at Re = 7000; wheras for Re = 2900 the highest heat transfer was along the next peak detected immediately after the disturbers. The experimental results observed in this study suggest that ribbed passages would yield higher heat transfer with moderate change in pressure drop compared with non-ribbed channels.
- OSTI ID:
- 98690
- Report Number(s):
- CONF-950640-; TRN: 95:006355-0003
- Resource Relation:
- Conference: 34. Heat Transfer and Fluid Mechanics Institute meeting, Sacramento, CA (United States), 1-2 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 34th Heat Transfer and Fluid Mechanics Institute; Reardon, F.H.; Thinh, Ngo Dinh [eds.]; PB: 302 p.
- Country of Publication:
- United States
- Language:
- English
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