Study of the influence of axial conduction in a boiling heated pipe

► Axial heat flux is concentrated in the transition regions from single-phase to two-phase flow and from two-phase flow to single-phase flow. ► Axial heat flux takes heat from the single-phase region and adds is to the two-phase region. ► The net effect of longitudinal heat conduction along the pipe is a decrease in the pipe length occupied by two-phase flow and an augmentation in the pipe region occupied by single-phase flow.