Accession Number : ADA132840

Title :   Droplet Decomposition in a Reactive Atmosphere: Complete Responses for Large Activation Energies.

Descriptive Note : Technical summary rept.,

Corporate Author : WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER

Personal Author(s) : McConnaughey,H V ; Ludford,G S S

PDF Url : ADA132840

Report Date : Jun 1983

Pagination or Media Count : 41

Abstract : A two-step combustion process, consisting of monopropellant (i.e., one-reactant) burning followed by bipropellant (i.e., two-reactant) burning, is considered. The original reactant, namely vapor from a liquid droplet, decomposes into a fuel that combines with oxidant in the surrounding atmosphere. Complete responses M(D1, D2) of the evaporation rate M of the droplet to the Damkohler numbers D1, D2 if the two reactions are determined in the limit of large activation energies. Conditions under which the response is monotonic or multi-valued (thereby exhibiting auto-ignition and auto-extinction) are identified. Previous conjectures, based on Damkohler-number asymptotics, are found to be mostly correct. (Author)

Descriptors :   *Combustion, *Applied mathematics, Problem solving, Mathematical models, Burning rate, Bipropellants, Monopropellants, Drops, Activation energy, Decomposition

Subject Categories : Numerical Mathematics
      Combustion and Ignition
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE