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NC State celebrates 70 years of nuclear engineering education
An early picture of the research reactor building on the North Carolina State University campus. The Department of Nuclear Engineering is celebrating the 70th anniversary of its nuclear engineering curriculum in 2020–2021. Photo: North Carolina State University
The Department of Nuclear Engineering at North Carolina State University has spent the 2020–2021 academic year celebrating the 70th anniversary of its becoming the first U.S. university to establish a nuclear engineering curriculum. It started in 1950, when Clifford Beck, then of Oak Ridge, Tenn., obtained support from NC State’s dean of engineering, Harold Lampe, to build the nation’s first university nuclear reactor and, in conjunction, establish an educational curriculum dedicated to nuclear engineering.
The department, host to the 2021 ANS Virtual Student Conference, scheduled for April 8–10, now features 23 tenure/tenure-track faculty and three research faculty members. “What a journey for the first nuclear engineering curriculum in the nation,” said Kostadin Ivanov, professor and department head.
Zhi-Gang Zhang, Ken-Ichiro Sugiyama
Nuclear Technology | Volume 175 | Number 3 | September 2011 | Pages 619-627
Technical Paper | NURETH-13 Special / Thermal Hydraulics | dx.doi.org/10.13182/NT11-A12510
Articles are hosted by Taylor and Francis Online.
To characterize the relationship between hydrodynamic and thermal effects on fragmentation of molten core structural material, which mainly includes cladding material, with the interaction of the coolant of sodium under a wide range of thermal and hydrodynamic conditions, this paper focuses on a series of fragmentation characteristics of a single molten Type 304 stainless steel droplet (5 g) with an ambient Weber number Wea from 199 to 586 and superheat conditions from 23 to 276°C, which penetrates into a sodium pool at an initial temperature from 301 to 313°C.In our experiments, fine fragmentations of single molten stainless steel droplets with high Wea were clearly observed, even under a supercooled condition that is well below its melting point of 1427°C. The dimensionless mass median diameters (Dm/D0) of molten droplets with high Wea are less than molten droplets with low Wea under the same thermal condition. When Wea is approximately >250, the hydrodynamic effect on fragmentation becomes predominant over the thermal effect under a relatively low superheat condition. For a higher Wea range, the comparisons indicate that the fragment sizes of the molten stainless steel droplet and jet have similar distributions to those of molten metallic fuel jets even with different thermophysical properties and a thousandfold mass difference, which implies the possibility that the fragment size characteristics of molten metal jets could be evaluated by the interaction of a single droplet with the sodium coolant without the consideration of dropping modes and mass.