Heat transfer enhancements in rotating two-pass coolant channels with profiled ribs: Part2- detailed measurements
Document Type
Conference Proceeding
Publication Date
1-1-2000
Abstract
Detailed heat/mass transfer distributions are presented inside a two-pass rotating ribbed coolant channel for two profiled-rib configurations. Several profiled-rib configurations have been studied (Acharya et al.; 2000), and it was found that the best performance was achieved by saw-tooth ribs, and a pyramid - valley rib combination. The profiled ribs were placed directly opposite to each other on the leading and trailing surfaces. Smooth side walls were used in all the experiments. Heat transfer measurements were compared with straight ribs of equal blockage ratio. The measurements were made in a two-pass rotating facility using the naphthalene sublimation mass transfer technique which provides highly resolved surface distributions. The results presented are for a Reynolds number of 30,000 two Rotation numbers (0 and 0.3) and include average heat/mass transfer over the entire inter-rib-module as well as detailed heat/mass transfer contours for two profiled-rib cases. Significant enhancements of up to 25% in heat/mass transfer was obtained with the pyramidvalley, and saw-tooth shaped ribs under rotating conditions.
Publication Source (Journal or Book title)
Proceedings of the ASME Turbo Expo
Recommended Citation
Nikitopoulos, D., Eliades, V., & Acharya, S. (2000). Heat transfer enhancements in rotating two-pass coolant channels with profiled ribs: Part2- detailed measurements. Proceedings of the ASME Turbo Expo, 3 https://doi.org/10.1115/2000-GT-0226