G. Yadigaroglu et M. Zeller, FLUID-TO-FLUID SCALING FOR A GRAVITY-DRIVEN AND FLASHING-DRIVEN NATURAL CIRCULATION LOOP, Nuclear Engineering and Design, 151(1), 1994, pp. 49-64
In certain natural-circulation reactor systems proposed recently, vapo
r generation takes place by flashing in an adiabatic riser above the c
ore. A step-by-step facility design procedure was used to define suita
ble scaling criteria for a refrigerant-113 (R-113) experiment simulati
ng the dynamics and stability of such a loop. The fact that vapor gene
ration does not normally take place in the core allows additional flex
ibility in designing the model; almost perfect simulation can be achie
ved, mainly by reducing the height of the facility according to the li
quid density ratio and scaling for similar void fraction distributions
in the prototype and the model.