Skip to content
  • Corporate Partnerships
  • Join
  • Donate
  • Sign In
American Nuclear Society
  • About ANS
      • Mission and Vision
      • Governance
      • Public Policy & Engagement
      • Donate
      • ANS Store
      • Contact Us
    • About ANS

      ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.

  • About Nuclear
      • About Nuclear
      • Nuclear Careers
      • K-12 Educator Resources
      • High School Accelerators
      • Outreach & Volunteer Opportunities
    • About Nuclear

      Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.

  • Membership
      • Professionals
      • Students
      • Organizations
      • Trustees of Nuclear
      • Find Your Community - Divisions & Sections
      • Mentor Match
      • Career Finder
      • Honors & Awards
      • Scholarships & Grants
    • Membership

      Explore membership for yourself or for your organization.

  • Conferences & Courses
      • Upcoming Conferences
      • Professional Development Courses & Certification
      • Webinars
      • Resources
    • Conference Spotlight

      2026 ANS Annual Conference

      May 31–June 3, 2026

      Denver, CO|Sheraton Denver

  • Publications & Standards
      • ANS Library
      • Nuclear News
      • Nuclear News Daily
      • Radwaste Solutions
      • Journals & NSTOR
      • Standards
      • Transactions
      • Proceedings
      • Books
      • Subscriber Access
    • Latest Magazine Issues

      Mar 2026

      Jan 2026

      Latest Journal Issues

      • Nuclear Science and Engineering

        April 2026

      • Nuclear Technology

        February 2026

      • Fusion Science and Technology

        April 2026

  • Nuclear Newswire
      • Latest News
      • Buyers Guide
      • Ukraine Taskforce
    • Latest News

      NRC looks to leverage previous approvals for large LWRs

      During this time of resurging interest in nuclear power, many conversations have centered on one fundamental problem: Electricity is needed now, but nuclear projects (in recent decades) have taken many years to get permitted and built.

      In the past few years, a bevy of new strategies have been pursued to fix this problem. Workforce programs that seek to laterally transition skilled people from other industries, plans to reuse the transmission infrastructure at shuttered coal sites, efforts to restart plants like Palisades or Duane Arnold, new reactor designs that build on the legacy of research done in the early days of atomic power—all of these plans share a common throughline: leveraging work already done instead of starting over from square one to get new plants designed and built.

  • Search
  • Corporate Partnerships
  • Join
  • Donate
  • Sign In
  • Home
  • Conferences
  • 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20)
Banner Image

20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics

20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
  • Awards
  • Organizers / ANS Contacts
  • Hotel/Travel
    • Local Dining
  • Registration Fees
  • Speaker Information
  • Session Chair Information
  • Become a sponsor
  • Resources
  • Frequently Asked Questions
  • Exhibitors
  • Sponsors

Program

Program
  • Schedule
  • Plenaries
  • Technical Sessions
  • Award Presentations
  • Keynotes
  • Workshops
  • Tours & Events

Schedule Timeline

Schedule is subject to change

Sunday — August 20, 2023
8:30AM EDT
    Events
  • NS Savannah and the SS John W. Brown Tour (Cost $50. Bus leaves from T Street exit, accessible from the Terrace Level.)
9:00AM EDT
    Events
  • Multiphysics for Advanced Reactors using the MOOSE Ecosystem (Cardozo)
  • Nek5000 (Columbia 1)
  • Code_Saturne - Overview of Capabilities and Example Applications (DuPont)
1:00PM EDT
    Events
  • SAM System Analysis Code for Advanced Reactor Applications (Columbia 2)
2:00PM EDT
    Events
  • Registration/Help Desk open 2:00-7:00 pm
6:00PM EDT
    Events
  • Opening Reception (Columbia Foyer)
  • Exhibit Open 6:00-8:00 pm (Columbia Foyer)
Monday — August 21, 2023
7:00AM EDT
    Events
  • Registration/Help Desk open 7:00 am-4:00 pm
8:00AM EDT
    Sessions
  • Opening Plenary (Columbia 5-8)
    Events
  • Exhibit Open 8:00 am-3:30 pm (Columbia Foyer)
10:30AM EDT
    Sessions
  • Celebration of 40 Years of NURETH (Columbia 5-8)
    Events
  • AM Break in Technology Expo (Columbia Foyer)
12:00PM EDT
    Events
  • Lunch on own
1:30PM EDT
    Sessions
  • Thermal Hydraulics System Code Development and Analysis: I (Columbia 1)
  • Computational Fluid Dynamics (CFD): I (Columbia 9/10)
  • Multiphase CFD: I (Columbia 11/12)
  • Experimental Methods and Instrumentation: I (Cardozo)
  • Experiments for Advanced and Special Purpose Reactors: I (Gunston East/West)
  • Two-Phase Flow and Heat Transfer: I (Columbia 2)
  • Liquid Metal Cooled Reactors: I (Embassy)
  • Severe Accident Scenarios and Source Term: I (Fairchild East/West)
  • Fluid-Structure Interactions (Dupont)
  • Small Modular LWRs: I (Columbia 3/4)
    Events
  • Raj Sehgal Award Presentation: Dr. Annalisa Manera (Columbia 5-8)
3:10PM EDT
    Events
  • PM Break (Columbia Foyer)
3:30PM EDT
    Sessions
  • Thermal Hydraulics System Code Development and Analysis: II (Columbia 1)
  • Computational Fluid Dynamics (CFD): II (Columbia 9/10)
  • Multiphase CFD: II (Columbia 11/12)
  • Experimental Methods and Instrumentation: II (Cardozo)
  • Experiments for Advanced and Special Purpose Reactors: II (Gunston East/West)
  • Two-Phase Flow and Heat Transfer: II (Columbia 2)
  • Liquid Metal Cooled Reactors: II (Embassy)
  • Thermal-Hydraulic Challenges and Opportunities for LWR Sustainability (Columbia 5-8)
  • Severe Accident Scenarios and Source Term: II (Fairchild East/West)
  • NEAMS Thermal-Hydraulics IRP (Dupont)
  • Small Modular LWRs: II (Columbia 3/4)
6:00PM EDT
    Events
  • Reception at French Embassy (Cost: $95. Bus leaves from T Street exit, accessible from the Terrace Level.)
Tuesday — August 22, 2023
7:00AM EDT
    Events
  • Registration/Help Desk open 7:00 am-4:00 pm
8:00AM EDT
    Sessions
  • Modeling of Two-Phase Flow-Induced Vibration in Various Flow Regimes (Columbia 3/4)
  • Thermal-Hydraulics in Support of Water Coolant Lithium Lead Breeding Blanket: R&D and Applications (Columbia 9/10)
  • Overview on the Methods for Design and Safety Assessment of High Temperature Gas Cooled Reactors (Columbia 5-8)
  • Validation of Molten Metal Cooled Advanced Reactors (Columbia 11/12)
    Events
  • Exhibit Open 8:00 am-3:30 pm (Columbia Foyer)
9:00AM EDT
    Sessions
  • Multiscale CFD and Coupling with System Codes: I (Columbia 9/10)
  • Experimental Methods and Instrumentation: III (Cardozo)
  • Experiments for Advanced and Special Purpose Reactors: III (Gunston East/West)
  • Natural Circulation in Reactor Systems (Columbia 2)
  • Progress in Thermal-Hydraulic Scaling (Columbia 11/12)
  • In-vessel Corium and Debris Bed Coolability: I (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: I (Columbia 5-8)
  • Thermal Hydraulics of Fusion Reactors (Columbia 1)
  • Flow Induced Vibrations in (GO-)VIKING: I (Dupont)
  • Verification and Validation of Systems Codes: I (Embassy)
  • Small Modular LWRs: III (Columbia 3/4)
10:20AM EDT
    Events
  • AM Break in Technology Expo (Columbia Foyer)
10:45AM EDT
    Sessions
  • Thermal Hydraulics System Code Development and Analysis: III (Columbia 1)
  • Computational Fluid Dynamics (CFD): III (Columbia 9/10)
  • Multiphase CFD: III (Columbia 11/12)
  • Integral and Separate Effects Tests: I (Cardozo)
  • High Temperature Gas Reactors: I (Columbia 3/4)
  • Molten Salt Reactors: I (Columbia 2)
  • Accelerating Fuel Development (Columbia 5-8)
  • In-vessel Corium and Debris Bed Coolability: II (Fairchild East/West)
  • Flow Induced Vibrations in (GO-)VIKING: II (Dupont)
  • Testing and Analysis for Lead Fast Reactor Development I: Experiments (Gunston East/West)
  • Verification and Validation of Systems Codes: II (Embassy)
12:25PM EDT
    Events
  • Lunch on own
1:30PM EDT
    Sessions
  • Thermal Hydraulics System Code Development and Analysis: IV (Columbia 1)
  • Computational Fluid Dynamics (CFD): IV (Columbia 9/10)
  • Multiphase CFD: IV (Columbia 11/12)
  • Integral and Separate Effects Tests: II (Cardozo)
  • High Temperature Gas Reactors: II (Columbia 3/4)
  • Molten Salt Reactors: II (Columbia 2)
  • Ex-vessel Corium Interaction and Coolability: I (Fairchild East/West)
  • OECD/NEA ARC-F and PreADES Projects: I (Dupont)
  • Testing and Analysis for Lead Fast Reactor Development II: Analysis (Gunston East/West)
  • Verification and Validation of Systems Codes: III (Embassy)
    Events
  • Technical Achievement Award Presentation: Dr. Upendra Rohatgi (Columbia 5-8)
3:10PM EDT
    Events
  • PM Break (Columbia Foyer)
3:30PM EDT
    Sessions
  • Computational Fluid Dynamics (CFD): V (Columbia 9/10)
  • Multiphysics Development and Applications (Columbia 11/12)
  • Integral and Separate Effects Tests: III (Embassy)
  • Rod Bundle Experiments: I (Columbia 1)
  • Boiling and Condensation: I (Columbia 2)
  • Lightning Talks: I (Columbia 3/4)
  • Advanced Reactor Fuel (Cardozo)
  • Gen-IV Reactor Thermal-Hydraulic Issues (Columbia 5-8)
  • Ex-vessel Corium Interaction and Coolability: II (Fairchild East/West)
  • OECD/NEA ARC-F and PreADES Projects: II (Dupont)
  • Testing and Analysis for Lead Fast Reactor Development III: CFD (Gunston East/West)
6:00PM EDT
    Events
  • Young Professional Social/Networking Event with Live Music (Sauf Haus, 1216 18th St NW, Washington, DC 20036)
Wednesday — August 23, 2023
7:00AM EDT
    Events
  • Registration/Help Desk open 7:00 am-4:00 pm
8:00AM EDT
    Sessions
  • Data-Driven Methods in Nuclear Thermal-Hydraulics and Reactor Safety: Challenges and Opportunities (Columbia 5-8)
  • Subchannel Methods Development for Modeling of Light-Water Reactors at Oak Ridge National Laboratory (Columbia 3/4)
  • High-Fidelity Multiphysics for Fission: Challenges, Accomplishments, and Future Directions (Columbia 9/10)
  • Recent Progress in Boiling Flow Simulation Using Interface Tracking Method (Columbia 11/12)
    Events
  • Exhibit Open 8:00 am-3:30 pm (Columbia Foyer)
9:00AM EDT
    Sessions
  • Computational Fluid Dynamics (CFD): VI (Columbia 9/10)
  • Multiscale CFD and Coupling with System Codes: II (Columbia 11/12)
  • Integral and Separate Effects Tests: IV (Embassy)
  • Rod Bundle Experiments: II (Columbia 1)
  • Critical Heat Flux and DNB Experiments: I (Cardozo)
  • Critical Heat Flux and DNB: I (Columbia 2)
  • High Temperature Gas Reactors: III (Columbia 3/4)
  • Containment TH, Hydrogen, and Fission Product Behavior: I (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: II (Columbia 5-8)
  • Liquid Metal Heat Transfer (Gunston East/West)
10:20AM EDT
    Events
  • AM Break in Technology Expo (Columbia Foyer)
10:45AM EDT
    Sessions
  • Subchannel Thermal Hydraulic Analysis (Columbia 11/12)
  • Rod Bundle Experiments: III (Columbia 1)
  • Critical Heat Flux and DNB Experiments: II (Cardozo)
  • Boiling and Condensation: II (Columbia 3/4)
  • Critical Heat Flux and DNB: II (Columbia 2)
  • Microreactors: I (Gunston East/West)
  • Artificial Intelligence and Machine Learning (Columbia 5-8)
  • Containment TH, Hydrogen, and Fission Product Behavior: II (Fairchild East/West)
  • Uncertainty in Severe Accident Modelling (Columbia 9/10)
  • Verification and Validation of Subchannel Codes: I (Embassy)
12:25PM EDT
    Events
  • Lunch on own
1:30PM EDT
    Sessions
  • Computational Fluid Dynamics (CFD): VII (Columbia 9/10)
  • Tests for Assessment of CFD (Columbia 11/12)
  • Rod Bundle Experiments: IV (Columbia 1)
  • Thermal Hydraulic Scaling (Columbia 2)
  • Liquid Metal Cooled Reactors: III (Cardozo)
  • Microreactors: II (Gunston East/West)
  • Containment TH, Hydrogen, and Fission Product Behavior: III (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: III (Columbia 3/4)
  • Verification and Validation of Subchannel Codes: II (Embassy)
    Events
  • Technical Achievement Award Presentation: Dr. Bao-Wen Yang (Columbia 5-8)
3:10PM EDT
    Events
  • PM Break (Columbia Foyer)
3:30PM EDT
    Sessions
  • DNS for Model Development (Columbia 11/12)
  • General Experimental Thermal Hydraulics: I (Columbia 1)
  • Lightning Talks: II (Columbia 3/4)
  • Liquid Metal Cooled Reactors: IV (Cardozo)
  • Beyond Design Basis Accidents in Advanced Reactors: Opportunity and Challenges (Columbia 9/10)
  • Severe Accidents in Advanced Reactors and Nuclear Installations: I (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: IV (Columbia 2)
  • General Verification, Validation and Uncertainty Quantification (Gunston East/West)
  • LWR Operation and Safety: I (Embassy)
6:00PM EDT
    Events
  • 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics Banquet (Columbia 5-8)
Thursday — August 24, 2023
7:00AM EDT
    Events
  • Registration/Help Desk open 7:00-11:00 am
8:00AM EDT
    Sessions
  • Path Towards a Breeding, Proliferation-Resistant, Thermal-Spectrum MSR (Columbia 3/4)
  • Severe Accident Modeling: Key Thermal-Hydraulic Cross Cutting Topics of Current Interest (Columbia 9/10)
  • Extending (Molecular Tagging) Velocimetry to Microscales and Three-Dimension (Columbia 11/12)
    Events
  • Exhibit Open 8:00-10:45 am (Columbia Foyer)
9:00AM EDT
    Sessions
  • Computational Fluid Dynamics (CFD): VIII (Columbia 9/10)
  • Critical Heat Flux and DNB Experiments: III (Cardozo)
  • General New and Advanced Reactors (Columbia 11/12)
  • High Performance Computing (Columbia 5-8)
  • Severe Accidents in Advanced Reactors and Nuclear Installations: II (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: V (Columbia 3/4)
  • Integrated Energy Systems (Columbia 2)
  • Uncertainty Methodology Development: I (Gunston East/West)
  • LWR Operation and Safety: II (Embassy)
10:20AM EDT
    Events
  • AM Break in Technology Expo (Columbia Foyer)
10:45AM EDT
    Sessions
  • Computational Fluid Dynamics (CFD): IX (Columbia 9/10)
  • General Computational Thermal Hydraulics (Columbia 11/12)
  • Critical Heat Flux and DNB Experiments: IV (Cardozo)
  • General Experimental Thermal Hydraulics: II (Columbia 1)
  • General Fundamental Thermal Hydraulics (Columbia 2)
  • Thermal-Hydraulics of Light-Water SMRs (Columbia 5-8)
  • General Severe Accidents (Fairchild East/West)
  • Machine Learning and Artificial Intelligence for T/H: VI (Columbia 3/4)
  • Uncertainty Methodology Development: II (Gunston East/West)
  • LWR Operation and Safety: III (Embassy)
12:25PM EDT
    Events
  • Lunch on own
1:30PM EDT
    Sessions
  • Closing Plenary (Columbia 5-8)
Friday — August 25, 2023
7:30AM EDT
    Events
  • Tour of NRC Emergency Operations Center and NIST Center for Neutron Research- SOLD OUT (Cost $45. Bus leaves from T Street exit, accessible from the Terrace Level.)
Receive Nuclear News Daily
Join ANS Today
Donate Today
Trustees of Nuclear
AMS
Clearpath
Constellation
Core Power
Dominion Engineering
Fissionaire
Global Laser Enrichment
Hogan Lovells
Lightbridge
Mirion Technologies
Nuscale
Oklo
Paragon
Radiant
Southern Nuclear
Studsvik
TerraPower
Urenco
X-Energy
American Nuclear Society

Advancing nuclear science and technology for the benefit of humanity

  • Advertising Opportunities
  • Contact Us
  • FacebookFacebook
  • TwitterTwitter
  • LinkedInLinkedIn
  • InstagramInstagram
  • YouTubeYouTube
  • PinterestPinterest
  • Nuclear NewswireNuclear Newswire
  • Email ListsEmail Lists

© Copyright 2026 American Nuclear Society

  • Privacy Policy
  • Terms of Use
  • Invoices
  • Media