A series of reflooding experiments has been carried out in the REWET-II facility. The primary objective of these tests was to study the effect of the combined upper plenum and downcomer coolant injection and to provide data for verification of computer codes. The experimental results indicate that upper plenum injection alone cools test rods slowly, a combined coolant injection to the upper plenum and the downcomer improves cooling significantly, and downcomer injection alone cools the test rod bundle best if the total coolant flow rate is the same in these three different cases. In all of these cases the lower plenum was full of coolant and the start of the experiment. Quenching time and clad temperature histories calculated with the computer codes NORCOOL-I and FLOOD4 are in reasonable quantitative agreement with experiments in the case of pure downcomer injection. Qualitative trends were reasonably predicted in other cases, too.
|Title of host publication||Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics|
|Publisher||American Nuclear Society ANS|
|Publication status||Published - 1983|
|MoE publication type||A4 Article in a conference publication|
|Event||Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics - Santa Barbara, United States|
Duration: 11 Jan 1983 → 14 Jan 1983
|Conference||Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics|
|Period||11/01/83 → 14/01/83|
- code validation
- thermal hydraulics
Kervinen, T., Hämäläinen, A., & Miettinen, J. (1983). Reflood experiments in the REWET-II rod bundle facility including comparisons with computer calculations. In Second International Topical Meeting on Nuclear Reactor Thermal-Hydraulics (pp. 638-645). American Nuclear Society ANS.