نتایج جستجو برای: nuclear fuel
تعداد نتایج: 303096 فیلتر نتایج به سال:
a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...
The use of a Lead Slowing-Down Spectrometer (LSDS) is considered as a possible option for nondestructive assay of fissile material in used (spent) nuclear fuel. The primary objective is to quantify the remaining fissile content of the fuel consisting mainly of Pu and U. The characterization of spent fuel is particularly important for nuclear safeguards and for determining the fuel burn-up level...
Fuel rods operating for several years in a LWR can experience fuel-cladding gap closure as result of the phenomena due to temperature and irradiation. Local power increase induces circumferential stresses cladding different expansion pellet. In presence corrosive fission products (i.e. Iodine) beyond specific stress threshold level burnup, cracks may grow-up from internal external surface, caus...
-This paper reviews some leading novel energy conversion approaches which are aimed at improving power generation efficiency and/or reducing harmful emissions. Some of the concepts used for cycle improvement are higher top temperatures, improved combustion systems, evasion of the Carnot limit by integration with fuel cells and direct nuclear energy conversion to power (the nuclear generator), r...
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