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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Getting back to yes: A local perspective on decommissioning, restart, and responsibility
For 45 years, Duane Arnold Energy Center operated in Linn County, Ia., near the town of Palo and just northwest of Cedar Rapids. The facility, owned by NextEra Energy, was the only nuclear power plant in the state.
In August 2020, a historic derecho swept across eastern Iowa with winds approaching 140 miles per hour. Damage to the plant’s cooling towers accelerated a shutdown that had already been planned, and the facility entered decommissioning soon after, with its fuel removed in October of that year. Iowa’s only nuclear plant had gone off line.
Today the national energy landscape looks very different than it did just six short years ago. Electricity demand is rising rapidly as data centers, artificial intelligence infrastructure, advanced manufacturing, and electrification expand across the country. Reliable, carbon-free baseload power has become increasingly valuable. In that context, Linn County has approved the rezoning necessary to support the recommissioning and restart of Duane Arnold and is actively supporting NextEra’s efforts to secure the remaining state and federal approvals.
Technical Session|Thermal Hydraulics
Friday, April 4, 2025|1:10–2:30PM MDT|Trail/Spirit
Session Chair:
Melissa A. Moreno
Alternate Chair:
Keenan R. Kresl-Hotz
Session Organizer:
Ashley Machado
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Direct Numerical Simulation of a Cantilevered Rod Experiment
1:10–1:30PM MDT
Sean P. Bistany (Penn State), Anshuman Chaube (Penn State), Tri Nguyen (Penn State), Elia Merzari (Penn State)
Paper
Experimental Investigation of Additively Manufactured Helically Rifled Tubing for Molten Salt Heat Exchangers
1:30–1:50PM MDT
Ryan P. McGuire (Virginia Commonwealth Univ.), Lane B. Carasik (Virginia Commonwealth Univ.), Andrew Hutsell (Young Members Group), James Vulcanoff (Virginia Commonwealth Univ.)
Simulations of External Flow Around Twisted Elliptical Tubes for Above Unity Prandtl Numbers and Low to Moderate Reynolds Numbers
1:50–2:10PM MDT
Sierra Tutwiler (Virginia Commonwealth Univ.), Dillon R. Shaver (ANL), Lane B. Carasik (Virginia Commonwealth Univ.)
Simulations of Twisted Tape Inserts of Varying Twist Pitches to Understand Thermal Hydraulic Impacts in Fusion Energy Systems
2:10–2:30PM MDT
Gavin Standish (Virginia Commonwealth Univ.), Sierra Tutwiler (Virginia Commonwealth Univ.), Lane B. Carasik (Virginia Commonwealth Univ.)
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