Numerical Analysis of Macro-Crack Formation Behavior within the Lump Coke

Hideyuki Aoki, Hiroshi Sato, Takatoshi Miura

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The thermal stress analysis within lump coke was studied in order to investigate macro-crack formation and deformation behavior which strongly influence heat and mass transfer in a coke oven chamber. The dilatation of plastic layer, heating rate dependence of thermophysical and mechanical properties of coal/coke, creep in the plastic and semi-coke layers, macro-crack propagation and radiative heat transfer within the macro-crack were considered in an analytical model. The macro-crack propagation was determined from the estimated crack tip stress intensity factor, Khat the macro-crack tip compared with the plane strain fracture toughness, KIC, through the unsteady-state calculation. Calculated results on crack formation and deformation behavior of lump coke were in good agreement with experimental observations in a laboratory-scale oven chamber. The analytical model could predict micro-crack formation within the lump coke normal to the heated wall and the coke surface close to the heated wall.

Original languageEnglish
Pages (from-to)341-348
Number of pages8
Journalkagaku kogaku ronbunshu
Volume21
Issue number2
DOIs
Publication statusPublished - 1995 Jan 1

Keywords

  • Carbonization
  • Crack
  • Creep Analysis
  • Dilatation
  • FEM
  • Stress Intensity Factor

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Numerical Analysis of Macro-Crack Formation Behavior within the Lump Coke'. Together they form a unique fingerprint.

  • Cite this