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

    Fingerprint

    heat flux
    low pressure
    Heat flux
    Inconel (trademark)
    tubes
    stainless steels
    Stainless steel
    steel
    test
    comparison
    rewetting
    temperature
    hydraulics
    Temperature
    simulation
    Hydraulics
    estimates
    prediction
    predictions

    All Science Journal Classification (ASJC) codes

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

    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.
    Gorton, Jacob P. ; Brown, Nicholas ; Lee, Soon Kyu ; Lee, Youho. / Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D. 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.6 p.
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    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.",
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    Gorton, JP, Brown, N, Lee, SK & Lee, Y 2018, 'Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D', 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, 11/11/18 - 11/15/18 pp. 1022-1027.

    Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D. / Gorton, Jacob P.; Brown, Nicholas; Lee, Soon Kyu; Lee, Youho.

    2018. 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.

    Research output: Contribution to conferencePaper

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    AU - Brown, Nicholas

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    Y1 - 2018/1/1

    N2 - 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.

    AB - 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.

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    Gorton JP, Brown N, Lee SK, Lee Y. Comparison of experimental and simulated low-pressure CHF tests using CTF and RELAP5-3D. 2018. 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.