Thermo acoustic waves in rarefied gas between two coaxial cylinders at a sudden change of the temperature of the outer cylinder

The heat transfer in a monatomic rarefied gas between two concentric cylinders in the case of sudden change of the outer wall temperature is studied. Different cases were calculated for a set of radius and temperatures of outer cylinder. On the wall of the inner cylinder are used two types of thermal boundary conditions - constant temperature and adiabatic isolated inner cylinder. The study aims to determine effect of arising waves on the gas macro characteristics (density, temperature and pressure) and in the case of adiabatic isolated case the inner wall temperature and pressure variations. The obtained numerical results are applicable in the thermal conductivity gauges.