The effects of ripple amplitude on heat transfer and fluid flow of X-lattice corrugated honeycombs

Jun Jun Chen, Gong Nan Xie, Hong Bin Yan

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

A previous study showed that the thermal performance of the X-lattice cored corrugated honeycomb (XCCH) is better than that of most other periodic cellular materials (PCMs). To further improve the thermal performance of the XCCH, the effects of different ripple amplitudes (i.e., a = 0.5, 0.7 and 1.0) on the characteristics of the flow and heat transfer are numerically investigated by thorough comparisons. In terms of the flow characteristics, with the increase of ripple amplitude, the vortex interaction in the channel becomes stronger, which results in evident increase of kinetic energy of turbulence at the boundary of vortex and reduction in the turbulent kinetic energy dissipation. As far as the heat transfer is concerned, within the Reynolds number range of 3696–7436, the heat transfer increases with the increase of ripple amplitude. The overall Nusselt number of the XCCH with a = 1.0 is 15.7% higher than that with a = 0.5. Within the corresponding range of pumping power, the thermal performance of the XCCH with a = 1.0 is up to 7% higher than that with a = 0.5 at relatively higher Reynolds numbers.

源语言英语
页(从-至)3412-3421
页数10
期刊Science China Technological Sciences
66
12
DOI
出版状态已出版 - 12月 2023

指纹

探究 'The effects of ripple amplitude on heat transfer and fluid flow of X-lattice corrugated honeycombs' 的科研主题。它们共同构成独一无二的指纹。

引用此