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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
Akira Sakurai, Masahiro Shiotsu, Koichi Hata
Nuclear Science and Engineering | Volume 88 | Number 3 | November 1984 | Pages 321-330
Technical Paper | doi.org/10.13182/NSE84-A18586
Articles are hosted by Taylor and Francis Online.
Film-boiling heat transfer on a horizontal test heater in a pool of saturated and subcooled water was investigated at pressures ranging from 20 kPa to 2 MPa. Platinum rods of 0.7, 1.2, 2, 3, and 5 mm in diameter were used as the test heater. A semiempirical equation and a modified Bromley equation were given, both of which could express the saturated film-boiling heat transfer coefficients within ±5% error. The heat transfer coefficients for a certain range of heater diameters under saturated and subcooled conditions were expressed within ±10% error by the two-phase boundary-layer film-boiling model with the boundary condition of equal liquid and vapor interfacial velocities. Pressure dependence of the minimum film-boiling temperature for pressure <1.1 MPa was clearly different from that for pressure >1.1 MPa. Minimum temperature in the lower pressure region seems to be determined by the hydrodynamic Taylor instability and that in the higher pressure region by the heterogeneous spontaneous nucleation limit. However, minimum temperature and heat flux of saturated film boiling in the former region did not agree with those of conventional equations based on the Taylor instability. Empirical equations of interfacial wave length, departing bubble diameter, and frequency near the minimum film-boiling temperature for the lower pressure region were given. Minimum temperature and heat flux equations were presented based on these empirical equations.