Mixing in Shear Coaxial Jets with and without Acoustics

Abstract

Modern rockets operate at supercritical pressures with respect to the propellants. Researchers need to understand mixing and combustion beyond liquid, gas states. Shear coaxial injectors are a common choice for cryogenic liquid rocket engines. Interactions of transverse acoustics with injector's own modes and mixing need to be understood for combustion instability. Need to understand differences in response to pressure and velocity nodes. Understand what non-dimensional numbers capture the mixing of typical injectors, characterize how geometry affects mixing.

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Document Details

Document Type
Technical Report
Publication Date
Mar 29, 2012
Accession Number
ADA576105

Entities

People

  • Ivett Leyva
  • Jeff Graham
  • Juan Rodriguez
  • Sophonias Teshome

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Waves
  • Acoustics
  • Air Force Research Laboratories
  • Chambers
  • Combustion
  • Engines
  • Frequency
  • Geometry
  • Injectors
  • Instability
  • Materials
  • Propellants
  • Rocket Engines
  • Rockets
  • Transverse
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Rocket Propulsion.