Published March 2005 | Version v1
Report

Study on the gas-entrainment from free-surface experimental study on the evolution mechanism of gas-dimple core

  • 1. Tokyo University, Dept. Quantum Engineering Systems Science, Tokyo (Japan)
  • 2. Japan Nuclear Cycle Development Inst., O-arai Engineering Center, Oarai, Ibaraki (Japan)

Description

In order to evaluate the gas-entrainment phenomena from free-surface, the experimental study on the evolution of gas-dimple core was carried out. The interaction between the surface dimple and downward flow was clearly visualized using the high-speed camera and high-speed pulse laser. The quantitative velocity information around the vortex dimple was obtained. With combining the Galvano mirror, simultaneous measurement systems of vertical and horizontal cross-sections are developed. As the result of experiment, it is confirmed that the downward flow plays very important role on the evolution of the gas-dimple core. (author)

Availability note (English)

Available from JST Library (JST: Japan Science and Technology Agency), P.O. Box 10 Hikarigaoka, Tokyo 179-9810 Japan, FAX: +81-3-3979-4781 (domestic), FAX:+81-3-3979-2210 (oversea)

Additional details

Publishing Information

Imprint Pagination
23 p.
Report number
JNC-TY--9400-2005-016