Computational simulation of aerosol behaviour: Dissertation

Jouni Pyykönen

Research output: ThesisDissertationCollection of Articles

1 Citation (Scopus)

Abstract

Computational methods have been developed for the simulation of aerosol dynamics and transport. Coupled aerosol-computational fluid dynamics (CFD) models are presented. A boundary layer type sectional model is shown to be able to provide an accurate solution of aerosol formation dynamics equations in a laminar flow reactor within a reasonable computing time. A bivariate extension of the quadrature method of moments (QMOM) is also discussed. The models have been applied to combustion processes. Computational simulations with a one-dimensional sectional model demonstrate the feasibility of the Na2SO4-route fume formation mechanism theory for recovery boilers. Estimates of deposition velocities are obtained for particles of various sizes and inorganic vapours, and for various conditions. It is noted that aerosol dynamics and transport significantly affect alkali chloride deposition. There seems to be a great deal of variation in the proportions of alkali chloride particle and vapour deposition in the typical range of biofuel-fired boiler superheater conditions.
Original languageEnglish
QualificationDoctor Degree
Awarding Institution
  • Aalto University
Supervisors/Advisors
  • Hämäläinen, Raimo, Supervisor, External person
Award date22 Mar 2002
Place of PublicationEspoo
Publisher
Print ISBNs951-38-5977-0
Electronic ISBNs951-38-5978-9
Publication statusPublished - 2002
MoE publication typeG5 Doctoral dissertation (article)

Fingerprint

aerosol
simulation
chloride
aerosol formation
deposition velocity
laminar flow
formation mechanism
computational fluid dynamics
biofuel
boundary layer
combustion
particle
boiler
method
reactor
fume

Keywords

  • aerosols
  • aerosol formation
  • deposition
  • modelling
  • population balances
  • computational fluid dynamics
  • laminar flow reactors
  • combustion processes
  • fly ash
  • recovery boilers
  • boundary layers

Cite this

Pyykönen, J. (2002). Computational simulation of aerosol behaviour: Dissertation. Espoo: VTT Technical Research Centre of Finland.
Pyykönen, Jouni. / Computational simulation of aerosol behaviour : Dissertation. Espoo : VTT Technical Research Centre of Finland, 2002. 74 p.
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title = "Computational simulation of aerosol behaviour: Dissertation",
abstract = "Computational methods have been developed for the simulation of aerosol dynamics and transport. Coupled aerosol-computational fluid dynamics (CFD) models are presented. A boundary layer type sectional model is shown to be able to provide an accurate solution of aerosol formation dynamics equations in a laminar flow reactor within a reasonable computing time. A bivariate extension of the quadrature method of moments (QMOM) is also discussed. The models have been applied to combustion processes. Computational simulations with a one-dimensional sectional model demonstrate the feasibility of the Na2SO4-route fume formation mechanism theory for recovery boilers. Estimates of deposition velocities are obtained for particles of various sizes and inorganic vapours, and for various conditions. It is noted that aerosol dynamics and transport significantly affect alkali chloride deposition. There seems to be a great deal of variation in the proportions of alkali chloride particle and vapour deposition in the typical range of biofuel-fired boiler superheater conditions.",
keywords = "aerosols, aerosol formation, deposition, modelling, population balances, computational fluid dynamics, laminar flow reactors, combustion processes, fly ash, recovery boilers, boundary layers",
author = "Jouni Pyyk{\"o}nen",
note = "Project code: KETT921",
year = "2002",
language = "English",
isbn = "951-38-5977-0",
series = "VTT Publications",
publisher = "VTT Technical Research Centre of Finland",
number = "461",
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school = "Aalto University",

}

Pyykönen, J 2002, 'Computational simulation of aerosol behaviour: Dissertation', Doctor Degree, Aalto University, Espoo.

Computational simulation of aerosol behaviour : Dissertation. / Pyykönen, Jouni.

Espoo : VTT Technical Research Centre of Finland, 2002. 74 p.

Research output: ThesisDissertationCollection of Articles

TY - THES

T1 - Computational simulation of aerosol behaviour

T2 - Dissertation

AU - Pyykönen, Jouni

N1 - Project code: KETT921

PY - 2002

Y1 - 2002

N2 - Computational methods have been developed for the simulation of aerosol dynamics and transport. Coupled aerosol-computational fluid dynamics (CFD) models are presented. A boundary layer type sectional model is shown to be able to provide an accurate solution of aerosol formation dynamics equations in a laminar flow reactor within a reasonable computing time. A bivariate extension of the quadrature method of moments (QMOM) is also discussed. The models have been applied to combustion processes. Computational simulations with a one-dimensional sectional model demonstrate the feasibility of the Na2SO4-route fume formation mechanism theory for recovery boilers. Estimates of deposition velocities are obtained for particles of various sizes and inorganic vapours, and for various conditions. It is noted that aerosol dynamics and transport significantly affect alkali chloride deposition. There seems to be a great deal of variation in the proportions of alkali chloride particle and vapour deposition in the typical range of biofuel-fired boiler superheater conditions.

AB - Computational methods have been developed for the simulation of aerosol dynamics and transport. Coupled aerosol-computational fluid dynamics (CFD) models are presented. A boundary layer type sectional model is shown to be able to provide an accurate solution of aerosol formation dynamics equations in a laminar flow reactor within a reasonable computing time. A bivariate extension of the quadrature method of moments (QMOM) is also discussed. The models have been applied to combustion processes. Computational simulations with a one-dimensional sectional model demonstrate the feasibility of the Na2SO4-route fume formation mechanism theory for recovery boilers. Estimates of deposition velocities are obtained for particles of various sizes and inorganic vapours, and for various conditions. It is noted that aerosol dynamics and transport significantly affect alkali chloride deposition. There seems to be a great deal of variation in the proportions of alkali chloride particle and vapour deposition in the typical range of biofuel-fired boiler superheater conditions.

KW - aerosols

KW - aerosol formation

KW - deposition

KW - modelling

KW - population balances

KW - computational fluid dynamics

KW - laminar flow reactors

KW - combustion processes

KW - fly ash

KW - recovery boilers

KW - boundary layers

M3 - Dissertation

SN - 951-38-5977-0

T3 - VTT Publications

PB - VTT Technical Research Centre of Finland

CY - Espoo

ER -

Pyykönen J. Computational simulation of aerosol behaviour: Dissertation. Espoo: VTT Technical Research Centre of Finland, 2002. 74 p.