Investigation on fluid-structure thermal interaction related to eddy structure on branch jet in T-junction

Tanaka, Masaaki  ; Takita, Hiroki*; Monji, Hideaki*; Ohshima, Hiroyuki

Water experiment and numerical simulation under thermal interaction conditions between fluid and structure were conducted for a T-junction piping system (T-pipe) consisting of a rectangular duct for main stream and a circular pipe for branch stream. Numerical results were compared with the experimental results and indicated that the fluid-structure thermal interaction was necessarily considered for thermal fatigue estimation in the thermal striping phenomena because fluid temperature distribution near the wall was much affected by the thermal interaction.