Abo Bibliothek: Guest
Turbulence Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence Heat and Mass Transfer
September, 25-29, 2006, Dubrovnik, Croatia

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf


ISBN Print: 978-1-56700-229-4

ISSN: 2377-2816

Droplet Dispersion and Vapor Mixing by Fine Scale Turbulence

pages 655-658
DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.1410
Get accessGet access

ABSTRAKT

Direct numerical simulations of evaporating droplets in homogeneous isotropic turbulence have been conducted to clarify the relationship between droplet dispersion, vapor mixing and coherent fine scale eddies in turbulence. Dispersion of 106 droplets and vapor mixing are analysed for several initial droplet Stokes numbers. The spatial distributions of droplets depend on their initial Stokes number, and the Stokes number that causes specific distribution of droplets is closely related to the time scale of coherent fine scale eddies in turbulence. The number density of droplet with particular Stokes number is low near the center of coherent fine scale eddies and shows the maxima near the radius of the eddy. The distributions of vapor mass fraction are significantly affected by the droplet Stokes number and distributions on the plane perpendicular to the rotating axes of fine scale eddies are closely related to the elliptic feature of the fine scale eddy.

Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen Preise und Aborichtlinien Begell House Kontakt Language English 中文 Русский Português German French Spain