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Investigation Of Thermofluid Processes In A Pcm Based Thermal Storage Module, Luca M. Crnjac
Investigation Of Thermofluid Processes In A Pcm Based Thermal Storage Module, Luca M. Crnjac
Electronic Thesis and Dissertation Repository
Latent heat thermal energy storage systems can capture and store solar thermal energy, enhancing the reliability of solar energy by facilitating a continuous and consistent energy supply. However, phase change materials used in these systems suffer from low thermal conductivities making it difficult to achieve suitable charging and discharging rates. The present research investigated this issue using computational and experimental approaches to improve the design of a thermal storage module through heat transfer enhancement. Various heat transfer enhancements including a finned honeycomb structure, and metal wool were incorporated into a thermal storage module to analyze their effect on charging and …
Flow Characterization Over Biomimetic Fish Scale Arrays, Isaac Nr Clapp Mr.
Flow Characterization Over Biomimetic Fish Scale Arrays, Isaac Nr Clapp Mr.
Electronic Thesis and Dissertation Repository
The contributions of drag to energy consumption in the transportation sector are significant and often unavoidable. Biomimetic surfaces are promising as passive drag reduction mechanisms. Among them, fish scale arrays are beneficial in the laminar and transitional flow regimes but lack fundamental understanding. This research addressed this need and investigated the underlying flow mechanisms over fish scale arrays. Experimental measurements revealed the presence of flow recirculation, streamwise velocity streaks, spanwise velocity fluctuations, and wall normal vorticity streaks, all of which play a role in the near wall flow behaviour. Numerical simulations revealed the superior friction drag reduction capabilities of the …