Numerical Simulation of Heat and Mass Transfer in Small Incandescent Lamps

Abstract

Finite-volume-method computer simulation is used to solve the heat and mass transfer mechanism in small incandescent lamps. For the purpose of more detailed modeling, the HSC method is used to calculate the heat transfer between the inside and outside of the lamp, and the halogen cycle in part of model is used to calculate tungsten mass distribution. Independent of the pressure, the filament temperature, the gas species and the balb radius, the heat conduction governs the radial heat transfer below the Langmuir-film radius, and heat convection develops to govern above it. The pressure increase promotes natural convection.