A simple model of a cylindrical heavily laden gas-particle jet

D. Eskin; H. Kalman

doi:10.1016/S0009-2509(01)00396-7

A simple model of a cylindrical heavily laden gas-particle jet

D. Eskin, H. Kalman

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A simple model describes the dynamic parameters of gas and particles in a cylindrical heavily laden jet. Analysis showed that the gas-particle jet flowing out of the nozzle might be considered as isobaric if parameters of the jet at a nozzle cross-section are uniform. Radial gas velocity is linearly distributed along the jet radius. The model of the jet is quasi-one-dimensional in this case. Assuming the jet to be incompressible an analytical solution of the momentum equation was derived. The results obtained with the model were compared with numerical results obtained by solving the axisymmetric problem using the "Fluent" numerical code. The model provides acceptable estimations for initial jet sections (length is less than double nozzle diameter) if solids/gas flow ratios lower than 6-8 and can be used for rough estimations at high solids/gas flow ratios (up to 50). This model is feasible for particle sizes within the range of 20 ≤ d_s ≤ 200 μm.

Original language	English
Pages (from-to)	449-455
Number of pages	7
Journal	Chemical Engineering Science
Volume	57
Issue number	3
DOIs	https://doi.org/10.1016/S0009-2509(01)00396-7
State	Published - 25 Jan 2002

Keywords

Isobaric flow
Jet
Mathematical modelling
Multiphase flow
Particle
Powder technology

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/S0009-2509(01)00396-7

Cite this

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AU - Kalman, H.

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AB - A simple model describes the dynamic parameters of gas and particles in a cylindrical heavily laden jet. Analysis showed that the gas-particle jet flowing out of the nozzle might be considered as isobaric if parameters of the jet at a nozzle cross-section are uniform. Radial gas velocity is linearly distributed along the jet radius. The model of the jet is quasi-one-dimensional in this case. Assuming the jet to be incompressible an analytical solution of the momentum equation was derived. The results obtained with the model were compared with numerical results obtained by solving the axisymmetric problem using the "Fluent" numerical code. The model provides acceptable estimations for initial jet sections (length is less than double nozzle diameter) if solids/gas flow ratios lower than 6-8 and can be used for rough estimations at high solids/gas flow ratios (up to 50). This model is feasible for particle sizes within the range of 20 ≤ ds ≤ 200 μm.

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KW - Mathematical modelling

KW - Multiphase flow

KW - Particle

KW - Powder technology

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A simple model of a cylindrical heavily laden gas-particle jet

Abstract

Keywords

ASJC Scopus subject areas

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