Competition between thermophoretic deposition and erosion leading to appearance of steady coating

E. Miller, Alexander Yarin, Y. Goldman

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A theoretical and experimental study of two-phase flow with bimodal ("coarse" and "fine") spherical particle distribution was carried out. Deposition of the particles onto a plate inclined at some angle to the flow direction at infinity is considered. The plate temperature being lower than that of the gas at infinity, the fine particles are thermophoretically deposited onto the plate surface and a coating accumulates on it. As the coarse particles impinge inertially upon the coating, the top layer of the latter is eroded and its thickness decreases. It is shown that the competition of these two processes (thermophoretic deposition and growth vs inertial impingement and erosion) may lead to a steady-state situation, which is of practical interest, for example, in creating a self-regulating layer on turbine blades in the polluted gas streams accompanying coal combustion.

Original languageEnglish
Pages (from-to)97-113
Number of pages17
JournalJournal of Aerosol Science
Volume23
Issue number2
Publication statusPublished - 1992 Mar 1
Externally publishedYes

Fingerprint

Erosion
coating
Gases
erosion
Coatings
Coal combustion
Two phase flow
Turbomachine blades
Turbines
two phase flow
theoretical study
gas
turbine
experimental study
Temperature
particle
Direction compound

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

Cite this

Competition between thermophoretic deposition and erosion leading to appearance of steady coating. / Miller, E.; Yarin, Alexander; Goldman, Y.

In: Journal of Aerosol Science, Vol. 23, No. 2, 01.03.1992, p. 97-113.

Research output: Contribution to journalArticle

Miller, E. ; Yarin, Alexander ; Goldman, Y. / Competition between thermophoretic deposition and erosion leading to appearance of steady coating. In: Journal of Aerosol Science. 1992 ; Vol. 23, No. 2. pp. 97-113.
@article{94f810ce51914969adf1149712d9e928,
title = "Competition between thermophoretic deposition and erosion leading to appearance of steady coating",
abstract = "A theoretical and experimental study of two-phase flow with bimodal ({"}coarse{"} and {"}fine{"}) spherical particle distribution was carried out. Deposition of the particles onto a plate inclined at some angle to the flow direction at infinity is considered. The plate temperature being lower than that of the gas at infinity, the fine particles are thermophoretically deposited onto the plate surface and a coating accumulates on it. As the coarse particles impinge inertially upon the coating, the top layer of the latter is eroded and its thickness decreases. It is shown that the competition of these two processes (thermophoretic deposition and growth vs inertial impingement and erosion) may lead to a steady-state situation, which is of practical interest, for example, in creating a self-regulating layer on turbine blades in the polluted gas streams accompanying coal combustion.",
author = "E. Miller and Alexander Yarin and Y. Goldman",
year = "1992",
month = "3",
day = "1",
language = "English",
volume = "23",
pages = "97--113",
journal = "Journal of Aerosol Science",
issn = "0021-8502",
publisher = "Elsevier Limited",
number = "2",

}

TY - JOUR

T1 - Competition between thermophoretic deposition and erosion leading to appearance of steady coating

AU - Miller, E.

AU - Yarin, Alexander

AU - Goldman, Y.

PY - 1992/3/1

Y1 - 1992/3/1

N2 - A theoretical and experimental study of two-phase flow with bimodal ("coarse" and "fine") spherical particle distribution was carried out. Deposition of the particles onto a plate inclined at some angle to the flow direction at infinity is considered. The plate temperature being lower than that of the gas at infinity, the fine particles are thermophoretically deposited onto the plate surface and a coating accumulates on it. As the coarse particles impinge inertially upon the coating, the top layer of the latter is eroded and its thickness decreases. It is shown that the competition of these two processes (thermophoretic deposition and growth vs inertial impingement and erosion) may lead to a steady-state situation, which is of practical interest, for example, in creating a self-regulating layer on turbine blades in the polluted gas streams accompanying coal combustion.

AB - A theoretical and experimental study of two-phase flow with bimodal ("coarse" and "fine") spherical particle distribution was carried out. Deposition of the particles onto a plate inclined at some angle to the flow direction at infinity is considered. The plate temperature being lower than that of the gas at infinity, the fine particles are thermophoretically deposited onto the plate surface and a coating accumulates on it. As the coarse particles impinge inertially upon the coating, the top layer of the latter is eroded and its thickness decreases. It is shown that the competition of these two processes (thermophoretic deposition and growth vs inertial impingement and erosion) may lead to a steady-state situation, which is of practical interest, for example, in creating a self-regulating layer on turbine blades in the polluted gas streams accompanying coal combustion.

UR - http://www.scopus.com/inward/record.url?scp=0026835265&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026835265&partnerID=8YFLogxK

M3 - Article

VL - 23

SP - 97

EP - 113

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

IS - 2

ER -