Partially-covered fractal induced turbulence on fins thermal dissipation.

ABSTRACT: The impacts of partially-covered fractal grids induced turbulence on the forced convective heat transfer across plate-fin heat sink at Reynolds number Re_Dh = 22.0 × 10³ were numerically and experimentally investigated. Results showed that partially covered grids rendered a higher thermal dissipation performance, with partially-covered square fractal grid (PCSFG) registering an outstanding increase of 43% in Nusselt number relative to the no grid configuration. The analyzation via an in-house developed single particle tracking velocimetry (SPTV) system displayed the findings of unique "Turbulence Annulus" formation, which provided a small degree of predictivity in the periodic annulus oscillations. Further assessments on PCSFG revealed the preferred inter-fin flow dyna

SUBMITTER: Chew SH 

PROVIDER: S-EPMC9098450 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature