A Theory for the Influence of Solid Heterogeneity on L* Instability

Chung King Law, F. A. Williams

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Based on a previously Proposed “sideways sandwich model”. L* instability of a heterogeneous propellant is investigated. It is shown that strictly speaking the stability limit for a heterogeneous propellant is the same as that of a homogeneous propellant whose properties are the space-average of those of the heterogeneous propellant. In addition it is found that under suitable conditions heterogeneity can falsify the stability limit and produce a stabilization effect. When the heterogeneity frequency of the propellant coincides with the characteristic frequency calculated from the homogeneous theory, the analysis predicts linearly growing L* oscillations at the homogeneous L* stability limit, with a consequent intensification of the instability. The theoretical predictions offer some explanations for dual-frequency phenomena in L* burners.

Original languageEnglish (US)
Pages (from-to)335-345
Number of pages11
JournalCombustion science and technology
Issue number6
StatePublished - Feb 1 1973

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy


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