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Fusion Science and Technology
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.
S. G. Durbin, M. Yoda, S. I. Abdel-Khalik, D. L. Sadowski, T. P. Koehler, ARIES Team
Fusion Science and Technology | Volume 47 | Number 1 | January 2005 | Pages 16-26
Technical Paper | dx.doi.org/10.13182/FST05-A595
Articles are hosted by Taylor and Francis Online.
The "hydrodynamic source term" has been identified as a possible issue for thick liquid protection schemes in inertial fusion energy reactor cavities. The hydrodynamic source term refers to the ejected droplets due to the primary turbulent breakup of the jets themselves. Droplets are continuously ejected from the surface of the jets and spread about the chamber, possibly interfering with driver propagation and target injection. Published correlations are examined in order to estimate upper limits for the hydrodynamic source term in the case of the robust point design (RPD-2002), an update to the High-Yield Lithium Injection Fusion Energy II (HYLIFE-II) design. Experimental data for vertical turbulent sheets of water issuing into ambient air downward from nozzles of thickness (small dimension) = 1 cm and aspect ratio of 10 are compared with the empirical correlations at near-prototypical Reynolds numbers of 1.3 × 105. A simple mass collection technique was developed to estimate the amount of ejected droplets from the jet surface. Boundary layer cutting is examined as a means of reducing the source term and improving surface smoothness. Alternate flow conditioning schemes are also explored to establish the relative importance of "traditional" flow straightening elements. Planar laser-induced fluorescence was used to visualize the free-surface geometry of the liquid sheet in the near-field region up to 25 downstream of the nozzle exit. These results indicate that boundary layer cutting can suppress the hydrodynamic source term for a well-conditioned jet but is not a substitute for proper flow conditioning.