Temperature field regulation of a droplet using an acoustothermal heater
Liqiang Li, Eryong Wu, Kun Jia, Keji Yang
Abstract
, inducing forced convection inside the droplet to enhance heat transfer. The equilibrium temperature field of a droplet is determined by a synergy of dissipative acoustic attenuation and acoustic streaming. We demonstrate that the distribution of the acoustic heat source and the patterns of acoustic streaming can be modulated by fluid viscosity and droplet size. Various spatial combinations of the acoustic heat source and steady streaming make different temperature fields in the droplet. We also propose a phase diagram of the temperature distribution in the droplet. This methodology enables opportunities for temperature-related processing inside a droplet bioparticle carrier or microreactor.
Topics & Concepts
Field (mathematics)MechanicsEnvironmental scienceMechanical engineeringEngineeringMaterials scienceNuclear engineeringPhysicsMathematicsPure mathematicsInnovative Microfluidic and Catalytic Techniques InnovationMicrofluidic and Bio-sensing Technologies3D Printing in Biomedical Research