Optical investigations of He II two phase flow | Zendy

E Di Muoio | Zendy

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Optical investigations of He II two phase flow

Author(s) -

E Di Muoio

Publication year - 2002

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1472205

Subject(s) - light scattering , optics , two phase flow , phase (matter) , granulometry , flow (mathematics) , scattering , laser , laser light , materials science , cross section (physics) , mechanics , physics , geology , quantum mechanics , paleontology , sediment

We describe the optical techniques we used to detect droplets in the HeII two phase flow of the Cryoloop experiment. These include quantitative light scattering, imaging, and laser phase sensitive anemometry and granulometry (PDPA). We demonstrate that droplets appear for vapor velocities larger than 5 m/s, and that they progressively invade the entire pipe cross section as the vapor velocity is increased. Estimates are given for the droplet size and density.

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