Transient Thermal Stress Prediction Due To Flow of Coolant Through Hot Pipe

Abstract

Transient thermal stresses in pipe wall due to coolant turbulent flowthrough pipe are investigated in this study with transient isothermal hot boundaryin the external pipe radius. Three Different values of Reynolds are tested (3000,5000 and 8000). Finite volume method was used to calculate the velocities andtemperatures fields in the working fluid (air). Thermal resistance method was usedto calculate the transient temperature distribution in the pipe wall and then thetransient thermal stresses were calculated. Minimum thermal stress was locatednearly in the mid plane of the pipe.