Onset of Rayleigh-Bénard convection in dielectric liquids with electric conduction
Yuxing Peng, R. Deepak Selvakumar, Jian Wu
Abstract
The convective flow of dielectric liquids with finite electric conductivity subjected to the simultaneous action of an electric field and a destabilizing temperature gradient is investigated. The instability of the system is studied through modal stability analysis, and it is found that the onset of the flow is delayed when an electric field is applied. Numerical simulations are performed to show the flow patterns and heat transfer characteristics. The dual solutions are highlighted in the bifurcation diagram.
Topics & Concepts
ConvectionMechanicsThermal conductionElectric fieldLiquid dielectricInstabilityMaterials scienceDielectricTemperature gradientRayleigh numberHeat transferPhysicsThermodynamicsCondensed matter physicsNatural convectionMeteorologyQuantum mechanicsOptoelectronicsFluid Dynamics and Thin FilmsNanofluid Flow and Heat TransferNonlinear Dynamics and Pattern Formation