The absence of phenomenological insights and accurate flow regime models makes it difficult to predict the improved effectiveness of internally-grooved tubes for two-phase heat transfer. A re-interpretation of available data and flow regime maps is used to suggest that performance improvement is a result of early transition to Annular flow. A modified flow regime map, with a newly-developed Stratified-Wavy to Annular transition criteria for internally-grooved tubes, is shown to increase regime prediction accuracy by 27% relative to the traditional, smooth tube flow regime prediction.
- Electronic and Photonic Packaging Division
Modified Model for Improved Flow Regime Prediction in Internally-Grooved Tubes
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Sharar, DJ, Jankowski, NR, & Bar-Cohen, A. "Modified Model for Improved Flow Regime Prediction in Internally-Grooved Tubes." Proceedings of the ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. Volume 2: Thermal Management; Data Centers and Energy Efficient Electronic Systems. Burlingame, California, USA. July 16–18, 2013. V002T08A042. ASME. https://doi.org/10.1115/IPACK2013-73199
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