Resonance-driven heat transfer enhancement in a natural convection boundary layer perturbed by a moderate impinging jet
Naoto Ogasawara, Juan F. Torres, Y. Kanda, Takuma Kogawa, Atsuki Komiya
Abstract
We report a convective heat transfer enhancement driven by flow resonance downstream of a natural convection boundary layer that is perturbed by a moderate impinging jet. Our experimental observations and large eddy simulations confirm flow resonance between the thermal boundary layer and a periodic flow at the jet-impinging region. Downstream heat transfer enhancement from the baseline of natural convection exceeds 40%. The results support the development of efficient heat transfer enhancement methods.
Topics & Concepts
Boundary layerJet (fluid)MechanicsConvective heat transferHeat transferNatural convectionConvectionMaterials scienceConvective Boundary LayerHeat transfer enhancementThermalThermodynamicsHeat transfer coefficientPhysicsPlanetary boundary layerFluid Dynamics and Turbulent FlowsHeat Transfer MechanismsAerodynamics and Acoustics in Jet Flows