Accession Number:

AD0266515

Title:

A THEORETICAL INVESTIGATION OF HYDROGEN-AIR REACTIONS. PART 1. BEHAVIOR WITH ELABORATE CHEMISTRY

Descriptive Note:

Technical rept.

Corporate Author:

GENERAL APPLIED SCIENCE LABS INC HEMPSTEAD NY

Report Date:

1961-08-01

Pagination or Media Count:

61.0

Abstract:

A study was made of the reaction history of hydrogen-air mixtures under adiabatic, iosbaric conditions. An elaborate chemistry was treated with a view toward establishing rather accurate reaction histories. In the future, simplified chemical models will be considered which will permit approximate analyses of the non-equilibrium behavior of hydrogen-air mixtures under flow conditions as, for example, in exhaust nozzles and mixing regions. The results presented for a variety of initial temperatures, pressures and mixture ratios indicate that during the early phases of the reaction the main products achieve close to their equilibrium values with little change in temperature. However, the intermediates, atomic O, atomic H, and the OH radical exceed their equilibrium values. The remaining, major portion of the reaction time involves the decay of these intermediates and the chemical energy release associated therewith. Because of its thermodynamic importance, i.e., its large enthalpy per unit mass, atomic H appears to be the most important intermediate for the reaction considered.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE