Insights into the dynamics of supercritical water flow using a two-phase approach

A two-phase approach has been proposed to study the supercritical flow with heat transfer deterioration (HTD) phenomena so that an analogy can be derived between subcritical boiling and transfer. The volume of fluid multiphase model used analyze flow, simulation result reasonably predicts wall temperature peaks. Moreover, velocity turbulent kinetic energy profiles at different axial locations explain occurrence HTD. parametric thermophysical properties revealed density variation is primary cause HTD in flows. Leaning onto this observation, current focuses on forces generated due variation. It suggests for no HTD, buoyancy inertia have comparable magnitude throughout flow. Mapping fraction variable reveals a sudden jump lighter phase thickness near site which also reflected as maximum plot nondimensional interface distance from (P). However, observation only restricted caused by buoyancy. This draw phenomenon film fluids. In end, theoretical expression conceptualized computing boundary (h), serve fundamental length scale flows it marks region highest property gradient wall.