Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D

Jacob P. Gorton, Nicholas Brown, Soon Kyu Lee, Youho Lee

    Research output: Contribution to conferencePaper

    Abstract

    We present the results of a preliminary comparison of low-pressure transient critical heat flux (CHF) tests conducted in a closed tube test section and best-estimate simulation results. We compare low-pressure experimental CHF test results for stainless steel 316 (SS316) and Inconel 600 test sections to results predicted by models developed in two widely-used thermal hydraulics codes; the system code RELAP5-3D and the Consortium for Advanced Simulation of LWRs (CASL) version of CTF. The objective of the comparison was to determine how well the models would predict CHF and post-CHF tube temperatures and rewetting behavior. The RELAP5-3D and CTF models conservatively predicted the heat flux at which CHF was exceeded for the SS316 models, but both codes showed that CHF was exceeded at a greater heat flux than in the experiment for the Inconel 600 case. RELAP5-3D and CTF overpredicted the post-CHF tube temperature in the SS316 model but underpredicted the Inconel tube temperature, thus demonstrating the need for improved CHF and post-CHF prediction methods for various materials.

    Original languageEnglish (US)
    Pages1022-1027
    Number of pages6
    StatePublished - Jan 1 2018
    EventInternational Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting - Orlando, United States
    Duration: Nov 11 2018Nov 15 2018

    Other

    OtherInternational Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting
    CountryUnited States
    CityOrlando
    Period11/11/1811/15/18

    All Science Journal Classification (ASJC) codes

    • Geotechnical Engineering and Engineering Geology
    • Nuclear Energy and Engineering
    • Nuclear and High Energy Physics

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  • Cite this

    Gorton, J. P., Brown, N., Lee, S. K., & Lee, Y. (2018). Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D. 1022-1027. Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.