This paper presents a consistent LBM formulation for the simulation of a two-phase water–steam system. Results of initial model validation in a range of thermodynamic conditions typical for BoilingWater Reactors (BWRs) are also shown. The interface between the two coexisting phases is captured from the dynamics of the model itself, i.e., no interface tracking is needed. The model is based on th...

The article considers the existing models and correlations for describing heat transfer during film boiling. Film boiling is an important thermophysical process that determines course of interaction melt reactor core materials with coolant, which can potentially occur a severe accident at nuclear power plant pressurized water-cooled (VVER/PWR). values Nusselt number predicted by these are compa...

Boiling is the most common method of disinfecting water in the home and the benchmark against which other point-of-use water treatment is measured. In a six-week study in peri-urban Zambia, we assessed the microbiological effectiveness and potential cost of boiling among 49 households without a water connection who reported "always" or "almost always" boiling their water before drinking it. Sou...

Advanced methods that use continuity wave equations in fluid flow paths and exact solutions of these and all other differential equations are applied to transient performance models of a counter flow heat exchanger and an Advanced Boiling Water Reactor (ABWR). The continuity wave equations for single and two-phase flow, with heat addition, are developed, and the exact solution for a typical lea...

The loading of MOX (Mixed Oxide) fuel in BWRs (Boiling Water Reactors) is considered in this paper in a “once-through” strategy. The fuel assemblies are of the General Electric 8×8 type, whereas the reactor is of the General Electric BWR/6 type. Comparisons with traditional UOX (Uranium Oxide) fuel assemblies revealed that the loading of MOX fuel in BWRs is possible, but this type of fuel creat...

Hitachi is advancing their designs for a conceptual reactor called the resource-renewable boiling water (RBWR), concept similar to advanced with harder neutron spectrum. This design aims minimise construction costs and waste production as well utilise separated plutonium minor actinide fuel. However, axial heterogeneity of poses calculation difficulties. The aim this work use known method, reac...