Verification of Void Fraction Conversion Methodology by means of Differential Pressure Measurement during the Steam Explosion in the TROI Experiment
Steam explosions are explosive processes in which a very rapid energy transfer occurs between a hot liquid and a volatile, colder liquid when the two liquids come into sudden contact. In order to quantify the risk for a prototypic steam explosion, TROI (Test for Real cOrium Interaction with water) experiments have been intensively performed at KAERI (Korea Atomic Energy Research Institute) since 2001. In the TROI experiment, a mixture of real corium materials of UO2, ZrO2, Zr and stainless steel was used to investigate the parametric effects of the material properties on the steam explosion phenomena. For the precise evaluation of the computer code on the steam explosion characteristics, the void fraction should be appropriately measured during the premixing process. This paper focuses on the validation process of the void fraction measured in the TROI experiment. A separate test was first performed with the same size test section using the same differential pressure sensors which have been used in TROI tests. The test results are compared with the void fractions by the level swell meter and the video images. The void fraction by differential pressure sensors in TROI tests are also compared with the void fractions by the video images. The results show that the void fraction conversion by measurement of a differential pressure in the TROI tests is feasible.
TROI Steam Explosion Void Fraction
S.H. Hong K.S. Ha J.H. Kim S.W. Hong
KAERI(Korea Atomic Energy Research and Institute)
国际会议
上海
英文
912-922
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）