Lagrangian dispersion in turbulent flow from laser transit anemometry | Zendy

Berman N. S. | Zendy

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Lagrangian dispersion in turbulent flow from laser transit anemometry

Author(s) -

Berman N. S.

Publication year - 1986

Publication title -

aiche journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.958

H-Index - 167

eISSN - 1547-5905

pISSN - 0001-1541

DOI - 10.1002/aic.690320508

Subject(s) - turbulence , mechanics , nozzle , dispersion (optics) , jet (fluid) , volume (thermodynamics) , flow (mathematics) , particle (ecology) , work (physics) , physics , probability density function , optics , mathematics , thermodynamics , statistics , geology , oceanography

The Lagrangian dispersion function in turbulent flow can be determined from measurements of the probability that a particle which is observed in a small volume is not observed in a similar size volume downstream. In this work a single‐detector method is proposed to detect the particle arrivals in a multiple series of scattering volumes; the probability can be determined from the digital record over a long time compared to the turbulent integral time scale. The method is tested at locations downstream of a water spray nozzle and a submerged jet of dilute polymer solutions.

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