Two-Phase Flow Regimes Seungjin Kim Apr 1, 2020 Different flow regimes observed in vertical, upward, air-water flow (Yadav, Mohan S., Master’s Thesis 2009). Different flow regimes observed in horizontal, cocurrent, air-water flow. (Yadav, Mohan S., Master’s Thesis 2009). Seungjin Kim Capt. James McCarthy, Jr. and Cheryl E. McCarthy Head and Professor of Nuclear Engineering My interests include thermal-hydraulics, reactor safety, two-phase flow experiments and instrumentation, interfacial area tranport modeling.