Numerical simulation for an annular flow with disturbance wave

Horiguchi, Naoki   ; Yoshida, Hiroyuki  ; Zhang, H.*; Mori, Shoji*

The comprehension of liquid transportation phenomena by liquid film and droplet behavior on fuel rods under high quality condition is important for thermal safety evaluation of a BWR core. Although disturbance wave with high speed develops on the film, the measurement of its shape and liquid transportation volume is difficult. Then, numerical simulation using a detailed numerical analysis code is suitable to evaluate the shape and volume and to comprehend the phenomena. In this presentation, we show numerical simulation results of annular flow including disturbance wave by using TPFIT developed in JAEA. Then, we explain to compare the numerical results with experimental results and discuss the validity of the simulation results in terms of wave height and wave velocity.