Results of thermal mixing tests at the HDR-facility and comparisons with best-estimate and simple codes
| Autor: | U. Schygulla, W. Häffner, L. Wolf, W. Baumann, K. Fischer |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Nuclear and High Energy Physics
Engineering business.industry Mechanical Engineering Nozzle Mechanics Structural engineering Data set Nuclear Energy and Engineering Thermal Fracture (geology) General Materials Science Test phase Water injection (engine) Safety Risk Reliability and Quality business Waste Management and Disposal Mixing (physics) Leg region |
| Zdroj: | Nuclear Engineering and Design. 99:287-304 |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/0029-5493(87)90128-2 |
| Popis: | This paper reports about experimental and analytical results of a first series of three thermal mixing experiments at HDR with high-pressure cold water injection (20°C) into one cold leg (300°C) of a complete 3-D, large-scale, thick-walled PV at 11 MPa. This experimental setup leads to a localized, stripe-like asymmetric cooldown of downcomer and vessel wall. With respect to this asymmetric thermal loading, a first unique data set of wall temperatures and surface strains has been generated as decision basis for code validations and future fracture mechanic oriented HDR experiments. The paper summarizes the experimental results of the Preliminary Test Phase of HDR-TEMB (thermal mixing experiments) consisting of the three experiments T32.15, T32.17 and T32.18. Major findings with respect to fluid mixing behavior and the decrease of fluid/wall temperatures in the HPI-nozzle/cold leg region, the cold leg nozzle and along the downcomer are reported. In addition, comparisons between measured data and blind pretest predictions with the multidimensional, best-estimate codes COMMIX-1B and SOLA-PTS as well as the engineering models REMIX, VOLMIX and JETMIX are presented and discussed. |
| Databáze: | OpenAIRE |
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