Burning rate studies of fuel air mixtures at high pressures

J. D. Knapton, I. C. Stobie, Herman Krier

Research output: Contribution to journalArticlepeer-review


High pressure burning studies of fuel air mixtures (mainly JP4 and air) were investigated in a closed chamber to determine what parameters control the maximum combustion rate and maximum pressure. The fuel was injected through shower-type nozzles into air at initial pressures ranging 2000-4000 psi. Densities of loading ranged 0.18-0.36 gm/cm3, and the equivalence ratio ranged 0.6-2.7 fuel to air. A method for evaluating the burning velocity is presented. It was found that a wide variation in the burning velocity could be obtained with maximum burning velocities occurring at minimum fucl air mixing times. The pressure-time history during the closed vessel explosion agrees remarkably well with a time cubed dependence. Such pressure-time data is used to interpret the pressure rise predicted by a simple isothermal model. It is shown that at these high pressures the initial mass burning rate is approximately proportional to a reduced pressure raised to the 2/3 power.

Original languageEnglish (US)
Pages (from-to)211-220
Number of pages10
JournalCombustion and Flame
Issue number2
StatePublished - Oct 1973

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Mechanical Engineering


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