Optimization of secondary-air addition in a continuous one-dimensional spray combustor

Justin A. Sirignano, Luis Rodriguez, Athanasios Sideris, William A. Sirignano

Research output: Contribution to journalArticlepeer-review


A framework is established for optimal control of continuous combustors using the sequential linear quadratic algorithm. An analysis is presented for liquid-fuel vaporization and burning in a continuous combustor with secondary-air addition at downstream locations. A steady one-dimensional flow is portrayed and a system of nonlinear ordinary differential equations is established. Three combustion models are presented with different rate-controlling processes: vaporization, vaporization-mixing, and vaporization-mixing-reaction. The models have a sufficient number of characteristic times and sufficient nonlinearity to provide a challenge to an optimization procedure. The proposed method yields an optimal distribution of secondary-air addition.

Original languageEnglish (US)
Pages (from-to)288-294
Number of pages7
JournalJournal of Propulsion and Power
Issue number2
StatePublished - 2010
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science


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