Thermally induced stresses on radiant heating tubes including the effect of fluid-structure interaction

High temperatures as well as local temperature peaks and their gradients within the individual components of industrial furnaces are a challenge for the durability of the furnace. In order to optimize furnace component design and thereby increase the life expectancy of each component being considered, the exact determination of local temperature distributions is indispensable. This necessitates a coupled examination of fluid flow and thermal processes, including the calculation of the resulting stresses for the considered component. In order to introduce the so-called fluid-structure interaction (FSI) in the field of plant engineering and industrial furnace engineering, a radiant heating tube was selected for calculations concerning temperature and stress distribution, since radiant heating tubes are especially subject to considerable thermal and mechanical loading.