Accession Number:

ADA445940

Title:

DSMC and Navier-Stokes Study of Backflow for Nozzle Plumes Expanding into Vacuum

Descriptive Note:

Conference proceedings

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES NOVOSIBIRSK INST OF THEORETICAL AND APPLIED MECHANICS

Report Date:

2005-07-13

Pagination or Media Count:

7.0

Abstract:

An important problem for space vehicles is contamination of the spacecraft surface by combustion products and unburned fuel exhausting from control thruster nozzles. The objective of the present work is a detailed simulation of the backflow in the case of gas exhaustion from the nozzle into vacuum. A specific feature of this problem is the drastic expansion of the initially dense flow at the nozzle exit, which makes necessary simulations of the near-continuum flow inside the nozzle, the transitional flow near the nozzle exit, and the free-molecular flow outside the nozzle. The simulations are performed by a combined Navier-StokesDSMC approach.

Subject Categories:

  • Pumps, Filters, Pipes, Tubing, Fittings and Valves
  • Fluid Mechanics
  • Combustion and Ignition
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE