Rayleigh-number dependence of the critical vibration frequency in vibrating thermal turbulence
Ze-Lin Huang, Xi-Li Guo, Jian-Zhao Wu, Bo-Fu Wang, Kai Leong Chong, Quan Zhou
Abstract
Vibration has the ability to control the convective heat transport depending on the relative direction of vibration to the gravitation. We show that horizontal vibration (perpendicular to gravitation) enhances heat transport while vertical vibration (parallel to gravitation) suppresses heat transport. The observed heat transport enhancement or suppression is indicated by the critical vibration frequency. We theoretically and numerically reveal the scaling law between the critical vibration frequency and the Rayleigh number.
Topics & Concepts
VibrationMechanicsTurbulencePhysicsCritical frequencyScalingConvectionRayleigh numberRayleigh scatteringConvective heat transferPerpendicularGravitationClassical mechanicsMaterials scienceAcousticsGeometryNatural convectionOpticsMathematicsGeophysicsIonosphereFluid Dynamics and Turbulent FlowsAdvanced Thermodynamics and Statistical MechanicsPhase Equilibria and Thermodynamics