Experimental investigation and validation of TASS/SMR-S code for single-phase and two-phase natural circulation tests with SMART-ITL facility
| Autor: | Sung-Won Lim, Hwang Bae, Ji-Han Chun, Hyun-Sik Park, Young-Jong Chung, Eunkoo Yun |
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| Rok vydání: | 2022 |
| Předmět: |
Single-phase natural circulation
SMART-ITL Nuclear engineering TK9001-9401 Flow (psychology) Phase (waves) TASS/SMR-S code Steam generator (boiler) Coolant Natural circulation Nuclear Energy and Engineering Annulus (firestop) Code (cryptography) Nuclear engineering. Atomic power Environmental science Single phase Two-phase natural circulation |
| Zdroj: | Nuclear Engineering and Technology, Vol 54, Iss 2, Pp 554-564 (2022) |
| ISSN: | 1738-5733 |
| Popis: | The natural circulation phenomena occurring in fully integrated nuclear reactors are associated with a unique formation mechanism. The phenomenon results from a structural feature of these reactors involving upward flow from the core, located in the central-bottom region of a single vessel, and downward flow to the steam generator in the annulus region. In this study, to understand the natural circulation in a single vessel involving a multi-layered flow path, single-phase and two-phase natural circulation tests were performed using the SMART-ITL facility, and validation analysis of the TASS/SMR-S code was performed by comparing the corresponding test results. Three single-phase natural circulation tests were sequentially conducted at 15%, 10%, and 5% of full-scaled core-power without RCP operation, following which a two-phase natural circulation test was successively conducted with an artificial discharge of coolant inventory. The simulation capability of the TASS/SMR-S code with respect to the natural circulation phenomena was validated against the test results, and somewhat conservative but reasonably comparative results in terms of overall thermalhydraulic behavior were shown. |
| Databáze: | OpenAIRE |
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