Inertial Particle Deposition in a 90° Laminar Flow Bend: An Eulerian Fluid Particle Approach

A numerical model for the simulation of aerosol flows via an Eulerian-Eulerian, one-way coupled, two-phase flow description is presented. An in-house computational fluid dynamics code is used to simulate the gaseous (continuous) phase, whereas a modified convective diffusion equation models particle...

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Bibliographic Details
Published inAerosol science and technology Vol. 45; no. 11; pp. 1376 - 1387
Main Authors Pilou, M., Tsangaris, S., Neofytou, P., Housiadas, C., Drossinos, Y.
Format Journal Article
LanguageEnglish
Published Colchester Taylor & Francis Group 01.11.2011
Taylor & Francis
Taylor & Francis Ltd
Subjects
Aerosols
Chemistry
Colloidal state and disperse state
Eulers equations
Exact sciences and technology
Fluid dynamics
General and physical chemistry
Numerical analysis
Simulation
Lagrangian model
Experimental data
Two phase flow
Wall
Computational fluid dynamics
Fluid
Prediction
Continuous phase
Particle
Laminar flow
Simulation
Flow(fluid)
Convective diffusion
Aerosols
Diffusion equation
Particle transport
Technique
Diameter
Deposition
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Summary:A numerical model for the simulation of aerosol flows via an Eulerian-Eulerian, one-way coupled, two-phase flow description is presented. An in-house computational fluid dynamics code is used to simulate the gaseous (continuous) phase, whereas a modified convective diffusion equation models particle transport. The convective diffusion equation, which includes inertial, gravitational, and diffusive particle transport, is solved by computational fluid dynamics techniques. The model is validated by comparing the calculated laminar fluid flow and particle deposition fractions to analytical and experimentally studied aerosol flows in a laminar flow 90° bend of circular cross section available in the literature. Model predictions are also compared with numerical predictions of Eulerian-Lagrangian models. Particle concentration profiles at different cross sections are calculated, and deposition sites on the wall boundary are indicated. For the range of studied particle diameters, the Eulerian-Eulerian model predicts deposition fractions satisfactorily, being in good agreement with the experimental data.
ISSN:0278-6826
1521-7388
DOI:10.1080/02786826.2011.596171