In previous studies, the thermal performance of ribbed channels was studied for
Reynolds numbers up to 100,000 with different rib shapes. In more recent studies, the
thermal performance of ribbed channels was studied up to Reynolds numbers of 400,000
for angled ribs to cover the range of internal cooling inside land-based gas turbines.
Previous studies also show that the thermal performance of V-shaped ribs is better than
the angled ribs. In this study, the Reynolds number from 30,000 to 400,000 is studied
with V-shaped ribs. The blockage ratio e/D is 0.1, 0.15, and 0.18 and spacing ratio P/e is
5, 7.5, and 10. The results show that the Nusselt number enhancement decreases when
the Reynolds number increases. The friction factor is found to be independent of The
Reynolds number. The thermal performance decreases when the Reynolds number
increases. Correlations for the Nusselt number and the friction factor as function of Re,
e/D, and P/e are developed.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2009-08-7053 |
| Date | 2009 August 1900 |
| Creators | Alkhamis, Nawaf Yahya |
| Contributors | Han, Je C |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | application/pdf |
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