LONG RANGE RADIATIVE HEAT TRANSFER IN MULTILAYERED MEDIA

Abstract

Thermal energy transport is vital to the performance and reliability of engineered systems. In applications like electronic cooling, energy conversion, and material processing, managing heat transfer is key to maintaining efficiency and stability. Heat transfer occurs when there is a difference in temperature. It happens mainly through two mechanisms: radiation and conduction. Radiation is a transfer of heat via electromagnetic waves. All matter above absolute zero emits thermal radiation, driven by electronic, molecular, and lattice oscillations within the material. Thermal conduction refers to the diffusion of heat within a material or across materials in contact, driven by molecular collisions that transfer kinetic energy from high to low temperature regions until equilibrium is reached. Convection is a form of thermal conduction in which heat transfer occurs through the bulk motion of a fluid. [1], [2]