Numerical Evaluation of Coolability Limits of External Reactor Vessel Cooling Using an Improved Thermal-Hydraulic System Analysis Code

Figure 15

(a) Cell-centered mass flow rate at C240–2 by natural convection; (b) convective heat transfer coefficient at S240–2; (c) zoomed-in plot of flow oscillations in the transition regime; (d) zoomed-in plot of heat transfer coefficient oscillations in the transition regime.

(a)

(b)

(c)

(d)