Akademik Veri Yönetim Sistemi
Thermal Science and Engineering Progress, cilt.66, 2025 (SCI-Expanded, Scopus)
This study numerically analyzes the combined effects of Fibonacci-inspired fins and rotational motion on the melting performance of Lauric acid in a horizontal shell-and-tube latent heat thermal energy storage (LHTES) system. Three Fibonacci-based fin configurations, with 2 (F2), 3 (F3), and 4 (F4) fins, are investigated under rotational speeds from 0 to 0.5 rpm in both clockwise (CW) and counter-clockwise (CCW) directions. The introduction of rotation is the most critical factor for performance enhancement. A direct comparison between the optimal rotating case (F4 at 0.5 rpm, CCW) and the worst-performing stationary case (F2 at 0 rpm) reveals a melting time reduction of approximately 89 % (from 11,220 s to 1,220 s), with a corresponding increase in average charging power of 830 %. While higher rotational speeds accelerate melting, the benefit lessens at speeds above approximately 0.3 rpm. Due to the asymmetric fin geometry, the melting performance is highly sensitive to the direction of rotation. CCW rotation proved more effective, reducing melting time by up to 31 % compared to CW rotation for certain configurations. This directional dependency reveals that the optimal fin configuration is also direction-dependent; the F2 fin design performs best with CW rotation, while the F4 design is optimal with CCW rotation. This study underscores the critical importance of co-analyzing asymmetric fin geometry with rotational parameters to maximize the performance of advanced LHTES systems.