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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Digital control system installed at China’s Linglong One
Earlier this month, the first digital control system was put in place at Linglong One, a small modular reactor demonstration project being built at the Changjiang nuclear power plant in Hainan Province. This is the world’s first land-based commercial SMR and is controlled by China National Nuclear Power Co. Ltd., a subsidiary of the China National Nuclear Corporation (CNNC).
N. D. Viza, M. H. Romanofsky, M. J. Moynihan, D. R. Harding
Fusion Science and Technology | Volume 70 | Number 2 | August-September 2016 | Pages 219-225
Technical Paper | doi.org/10.13182/FST15-216
Articles are hosted by Taylor and Francis Online.
A T-junction microfluidic device consists of one microchannel connected to a second microchannel at 90 deg. The size of the emulsions that form at the junction depends on the dimensions of the channel and the properties of the immiscible fluids flowing through them. Micron-sized emulsions are easily formed in small channels where interfacial tension forces dominate, but it is more difficult to form larger emulsions that could be used to produce inertial confinement fusion (ICF) targets. The concept and feasibility of using this method to mass-produce millimeter-sized ICF targets are presented.
The experimental data presented here will demonstrate the competing contribution of the fluids’ surface tension and fluid velocity to forming and controlling the volume of millimeter-sized oil-in-water emulsions. The oil-in-water emulsion is the first step in the process of making resorcinol-formaldehyde foam targets (1 to 4 mm in diameter). Adding a surfactant to the aqueous phase lowered the aqueous-solid surface energy, which allowed for greater flexibility in manufacturing T-junctions. Equally important, although it also lowered the interfacial surface tension, the emulsions remained encapsulated by adjusting the flow velocities. The effect of the surfactant on the completing shear, viscous, and surface energy forces involved in the microencapsulation mechanism is described. Oil-in-water emulsions, 1.32 to 8.32 mm in diameter, and water-in-oil emulsions, 1.10 to 3.2 mm diameter, were formed. A protocol is presented for tuning the droplet diameter to a desired value based on the capillary number and the relative fluid velocities ratio (which must be below 0.5). A linear regression showed the relationship between the fluid velocities and desired droplet diameter. Control of the outer diameter was demonstrated over a 1.75- to 4.14-mm-diameter range with a 426- to 900-μm wall thickness.