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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|Sponsored by THD
Wednesday, November 12, 2025|1:00–2:45PM EST|Columbia 12
Session Chair:
Nick Meacham
Alternate Chair:
Subash Sharma
Session Organizers:
Jun Fang
Anna Iskhakova
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A Three-Dimensional CFD Simulation of Jet Breakup Under High-Temperature Multiphase Conditions
1:00–1:20PM EST
Jiwon Choi (Young Members Group), In Sik Ra (Sejong University), Hae-Yong Jeong (Sejong University)
Paper
Modeling of Two-Phase Boiling Flow Instabilities in Parallel Helical Channels
1:20–1:40PM EST
Prasad Vegendla (ANL)
Toward Direct Numerical Simulation of Direct Contact Condensation-Induced Chugging Phenomenon
1:40–2:00PM EST
Nicholas J. Mecham (NCSU), Taylor E. Grubbs (NCSU), Om Jagtap (NCSU), Koichi Tanimoto (Mitsubishi Heavy Industries, Ltd.), Yoshiyuki Kondo (Mitsubishi Heavy Industries, Ltd.), Nam T. Dinh (NCSU), Igor A. Bolotnov (NCSU)
Numerical Study on Flow Characteristics in a Full-Scale Core Catcher
2:00–2:20PM EST
Seokwon Whang (FNC Technology Co. Ltd), Kum Ho Han (FNC Technology Co.)
Effect of Crossflow Calculation for Void Prediction of 3D Components in System Codes
2:20–2:40PM EST
Yunseok Lee (Incheon National University), Taewan Kim (Incheon National University)
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