This study presents numerical simulations of forced convection heat transfer with parachute-shaped segmented flow. The particles are encapsulated phase-change material flowing with water through a square cross-section duct with iso-flux boundaries. The system is inspired by the gas exchange process in the alveolar capillaries between red blood cells and lung tissue. A numerical model is developed for the motion of elongated encapsulated phase-change particles along a channel in a particulate flow where particle diameters are comparable with the channel height. The heat transfer enhancement for the parachute-shaped particles is compared with that of the spherical particles. Results reveal that the snug movement of the particles has the key role in heat transfer efficiency. The parachute-shaped geometry produces small changes in the heat transfer coefficient compared to a spherical geometry. However, the parachute-shaped particle flow is more robust to changes in particle concentration inside the channel.
Bio-Inspired Segmented Flow: Effect of Particle Elongation on the Heat Transfer
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received November 23, 2011; final manuscript received November 9, 2012; published online June 21, 2013. Assoc. Editor: Franz-Josef Kahlen.
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Small, L., and Hassanipour, F. (June 21, 2013). "Bio-Inspired Segmented Flow: Effect of Particle Elongation on the Heat Transfer." ASME. J. Heat Transfer. July 2013; 135(7): 071001. https://doi.org/10.1115/1.4024062
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