A T-junction structure is common in nuclear reactor systems, and plays an essential role in safety operation. An accurate estimation of the resistance characteristics of a T-junction is important for both energy conservation and engineering design. In the current study, the concept of the head loss coefficient K for a local structure was proposed, and its thermodynamic definition is extended to laminar flow within a T-junction by an entropy production approach, which was initially for turbulent flows. Specific numbers of K was determined by integration of the entropy generation rate obtained from a numerical simulation. In addition, the correlation between K and Re of combining and dividing flows was also derived.
Estimation of Loss Coefficient for T-Junction by an Entropy Production Approach
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Ji, Y, Zhang, H, Zhang, Y, Li, Y, & Yan, L. "Estimation of Loss Coefficient for T-Junction by an Entropy Production Approach." Proceedings of the 2014 22nd International Conference on Nuclear Engineering. Volume 2B: Thermal Hydraulics. Prague, Czech Republic. July 7–11, 2014. V02BT09A036. ASME. https://doi.org/10.1115/ICONE22-30934
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