the main purpose of this study is to perform numerical simulation of nanofluids as the coolant in vver-440 fuel rod bundle. the fuel rod bundle contains 60 fuel rods with length of 960 mm and 4 spacer grids. in vver-440 fuel rod bundle the coolant fluid (water) is in high pressure and temperature condition. in the present thermo-hydraulic simulation, water-al2o3 nanofluids containing various vo...

Background. Improvement of the methodology for computational analysis residual stresses in structural elements reactor is an integral part work when extending service life NPP power units.
 Objective. Determine value technological stress arising baffle a VVER-1000 during welding and postweld heat treatment according to austenitizing mode. To evaluate effect considering dependence transfer ...

Nuclear power plants containment plays an important role as last-defined barrier in defense depth approach against the release of radioactive material to environment. In this study, a parallel processing couple has been developed full scope analysis blowdown source and pressurization parameters LBLOCA accident. To achieve goal, primary secondary loops VVER-1000/V446 were first simulated TRACE V...

In this paper, the modeling and simulation of PWRs loaded with hexagonal fuel assemblies has been implemented NECP-Bamboo code. NECP-Bamboo, consisting a 2D lattice code named Bamboo-Lattice 3D steady-state core Bamboo-Core, was primitively designed for rectangular assemblies. As capability extension assemblies, four aspects improvement have in NECP-Bamboo. Firstly, Constructive Solid Geometry ...