Thermal stratification in piping may lead to considerable additive global bending moments and local peak stresses. Numerical analysis is carried out to assess the effect of thermal stratification in piping on peak stress intensity according to ASME Co...
Thermal stratification in piping may lead to considerable additive global bending moments and local peak stresses. Numerical analysis is carried out to assess the effect of thermal stratification in piping on peak stress intensity according to ASME Code, Section Ⅲ, NB-3200 under various conditions considering three parameters. As the temperature difference between top and bottom at inner side of piping increases, peak stress intensity increases linearly. On the other hand, peak stress intensity decreases with the increase of boundary layer thickness. Moreover the increase of thermal stratification length causes the increase of peak stress intensity until it approaches to a sustainable value.