Modeling and investigation of thermostressed state of thermosensitive hollow cylinder during heat removal by the way of evaporation of liquid

Abstract

On the example of the three-layered by axial coordinate cylinder the formulation of the mathematical model and the method of determination of steady-state distributions of temperature and stresses are illustrated. The heat flux is directed to one of the flat bounding surfaces, and the heat removal by liquid evaporation takes place on the another surface. It is assumed that in the second layer of cylinder there are heat sources distributed by parabolic law, and between layers the conditions of ideal thermal contact are performed. The effect of thermomechanical properties of materials of the cylinder components depending on the temperature and evaporation intensity on the nature and level of temperature and stress distributions are investigated. It is shown, that neglecting the dependence of thermomechanical characteristics (the replacement for basic or average integral ones) causes the significant differences between the distributions of stress-strain state components in the thermosensitive and nonthermosensitive cylinders, which may lead to qualitatively different distributions (the compression in the thermosensitive and stretching in nonthermosensitive one).