SIMULATION OF FAST GAS INJECTION EXPANSION PHASE EXPERIMENTS
The injection of a high pressure gas into a stagnant liquid pool is the characteristic phenomenon during the expansion phase of a hypothetical core disruptive accident in liquid metal cooled fast reactors. In order to investigate lot of mechanism involved in this phase of the accidents evolution, an experimental campaign called SGI was performed in 1994 in Forschungszentrum Karlsruhe, now KIT. This campaign consists of nine experiments which have been dedicated to assess the effects of different pressure injection, the nozzles size and the presence of inner confinement in the formation of the rising bubble. Three of these experiments, which were focused on the pressure effects, have now been simulated with SIMMER III code and with FLUENT 6.3 code, a commercial CFD code. Both codes, despite their different features, have showed a good agreement with the experimental results. In particular, time trend evolutions of pressures and bubble volumes have been well reproduced by simulation. Furthermore, both codes agree on the shape of the bubble, even though they have evidenced same discrepancies with the experimental shape.
Donella Pellini Werner Maschek Nicola Forgione Francesco Poli Francesco Oriolo
Karlsruhe Institute of Technology, Forschungszentrum Karlsruhe, IKET P.O.Box 3640, D-76021 Karlsruhe Università di Pisa, DIMNP Via Diotisalvi 2, 56100 Pisa,Italy
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-9
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）