Influence of particle diameter distribution on the downstream particle turbulence in a two-phase, turbulent, round jet (EN)

Anagnostopoulos, JS (EN)

Bergeles, G (EN)

Sargianos, NP (EN)

A numerical algorithm is used to study the `fan-spreading' mechanism of axial particle turbulence acquisition and the effects on it of the inlet particle diameter distribution, downstream of a particle-laden, turbulent, round jet. The algorithm is based on the particle-source-in-cell numerical technique for two-phase flows. Eulerian equations are used for the description of the gas-phase dynamics, whilst the solid particles are treated within the Lagrangian framework. The turbulent particle dispersion is simulated with the aid of the stochastic separated flow model. It was found that the `fan-spreading' turbulence is very much affected by the mean and standard deviation of the particle size distribution; in particular, it was found that the `fan-spreading' mechanism becomes weaker when the standard deviation of the particle diameter distribution is higher and the mean particle diameter smaller. An analytical expression describing the axial particle turbulence due to `fan-spreading' is proposed and tested, along with a similarity profile valid for the particles of bigger size. (EN)

journalArticle (EN)

Two phase turbulent round jets (EN)

2-PHASE FLOW (EN)

Turbulent flow (EN)

Physics, Fluids & Plasmas (EN)

Stochastic separated flow model (EN)

Particle diameter distribution (EN)

Particle laden jets (EN)

TURBULENT JET (EN)

FAN-SPREADING (EN)

Mathematics, Interdisciplinary Applications (EN)

Particles (particulate matter) (EN)

Fan spreading mechanism (EN)

Jet Flow (EN)

Mathematical models (EN)

Downstream particle turbulence (EN)

PARTICLE TURBULENCE (EN)

NUMERICAL STUDY (EN)

Computer Science, Interdisciplinary Applications (EN)

Turbulence (EN)

Two phase flow (EN)

Gas dynamics (EN)

Numerical methods (EN)

PARTICLE-LADEN JET (EN)

Particle size analysis (EN)

Lagrangian equations (EN)

Algorithms (EN)

Mechanics (EN)

Jets (EN)

Two-Phase Flow(Gas/Solid (EN)

Eulerian equations (EN)

Turbulent particle dispersions (EN)

Εθνικό Μετσόβιο Πολυτεχνείο

Ψηφιακό Αποθετήριο της Κεντρικής Βιβλιοθήκης του ΕΜΠ | Dspace@NTUA

Κεντρική Βιβλιοθήκη Ε.Μ.Π.

Ιδρυματικό Αποθετήριο

Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά

International Journal for Numerical Methods in Fluids (EN)

Αγγλική γλώσσα

1993 (EN)

http://hdl.handle.net/123456789/10977

ISI:A1993KM68300002 (EN)

287 (EN)

0271-2091 (EN)

10.1002/fld.1650160403 (EN)

4 (EN)

301 (EN)

16 (EN)

JOHN WILEY & SONS LTD (EN)