Resonance-driven heat transfer enhancement in a natural convection boundary layer perturbed by a moderate impinging jet

Naoto Ogasawara, Juan F. Torres, Yuki Kanda, Takuma Kogawa, Atsuki Komiya

Research output: Contribution to journalArticlepeer-review

Abstract

We report a resonance-driven convective heat transfer enhancement downstream of a natural convection boundary layer that is perturbed by a moderate impinging jet. Flow resonance is experimentally and numerically confirmed between the boundary layer and a periodic flow driven by the unbalance of jet momentum and buoyancy. When the oscillation frequency in the impinging region is a submultiple of the characteristic frequency of natural convection, downstream heat transfer enhancement E from the baseline of natural convection exceeds 40%. In contrast, further increasing the jet momentum fourfold yields E<20%. The results support the development of efficient heat transfer enhancement methods.

Original languageEnglish
Article numberL061501
JournalPhysical Review Fluids
Volume6
Issue number6
DOIs
Publication statusPublished - 2021 Jun

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Fluid Flow and Transfer Processes

Fingerprint

Dive into the research topics of 'Resonance-driven heat transfer enhancement in a natural convection boundary layer perturbed by a moderate impinging jet'. Together they form a unique fingerprint.

Cite this