التفاصيل البيبلوغرافية
| العنوان: |
Penrose tiling topologies and manifold micro-pin–fin heat sinks: A study on relations between geometry and thermophysics. |
| المؤلفون: |
Yao, Xiaole1 (AUTHOR), Liu, Qian1 (AUTHOR), Shi, Qianlei1 (AUTHOR), Zhu, Xiaoqing1 (AUTHOR), Elsayed, Ahmed1,2 (AUTHOR), Ju, Xing1 (AUTHOR) scottju@ncepu.edu.cn, Xu, Chao1 (AUTHOR) |
| المصدر: |
International Journal of Heat & Fluid Flow. Oct2024, Vol. 109, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*HEAT sinks, *GEOMETRIC distribution, *HEAT transfer fluids, *TEMPERATURE distribution, *THERMAL resistance |
| مستخلص: |
• The Penrose tiling is introduced into the MMPF heat sink's structure topology. • Heat sinks with sun, star, batman, and two rhombuses designs are investigated. • Batman heat sink has the smallest temperature uniformity index, 0.23 × 10−2. • The sun heat sink has better temperature uniformity and overall performance. • Element density and distribution have relations with the heat sink performance. Manifold micro-pin–fin (MMPF) heat sink has a broad application prospect in high heat flux density cooling. It also reminds us of the relationship between geometry and thermophysics. In this paper, we tried to introduce the famous Penrose tiling into the MMPF heat sink's structure topology design. The correlation between the tiling geometrical features and the heat and mass transfer is initially explored. By analyzing the heat transfer and fluid flow characteristics, we find that all MMPF heat sinks with Penrose tiling geometries are priority to the regular geometries regarding the coefficient of performance (COP). This probably hints that more levels of geometry features may benefit the performance of heat sinks. Hydrodynamic and thermal performances of heat sinks with sun, star, batman, and two rhombus designs are investigated under different velocity inlet and heat flux conditions, and the influence of macroscopic geometric distribution. Sun and star heat sinks have similar performances, which confirms that they are equivalent in the Penrose universe, even for thermophysics. The partial tenfold symmetry of the batman heat sink gives the best temperature distribution and uniformity, with the smallest temperature uniformity index of 0.23 × 10-2 at q = 8 × 106 W/m2. The sun heat sink has a giant COP, overall thermal performance factor, and minor thermal resistance with better temperature uniformity and overall performance. The study of six sun heat sinks with varying nozzle densities also proves that, for MMPF designs, a general principle is that the element (nozzle) density and distribution have significant connections with the heat sink performance. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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