DSMC and Navier-Stokes Study of Backflow for Nozzle Plumes Expanding into Vacuum
RUSSIAN ACADEMY OF SCIENCES NOVOSIBIRSK INST OF THEORETICAL AND APPLIED MECHANICS
Pagination or Media Count:
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.
- Pumps, Filters, Pipes, Tubing, Fittings and Valves
- Fluid Mechanics
- Combustion and Ignition
- Unmanned Spacecraft