Accession Number:

ADA522806

Title:

Modeling of Homogeneous Condensation in High Density Thruster Plumes

Descriptive Note:

Conference paper

Corporate Author:

AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE

Report Date:

2010-06-04

Pagination or Media Count:

15.0

Abstract:

A computational approach to homogeneous nucleation is proposed, based on Eulerian description of the gas phase coupled with a Lagrangian approach to the cluster phase. A continuum, Euler Navier-Stokes solver VAC is used to model the gas transport, and a kinetic particle solver is developed in this work to simulate cluster nucleation and growth. The new model was found to reproduce well the known theoretical dimer formation equilibrium constants for two gases under consideration, argon and water. Reasonable agreement between computed and available experimental data was found in terminal cluster size distributions in nozzle water expansions in a wide range of stagnation pressures. The proposed approach was found to be orders of magnitude faster than a comparable approach based on the DSMC method.

Subject Categories:

  • Organic Chemistry
  • Numerical Mathematics
  • Statistics and Probability
  • Computer Programming and Software
  • Combustion and Ignition
  • Jet and Gas Turbine Engines
  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE