DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Impact of Nozzle Separation on the Plumes of Two Parallel Thrusters

Grabe, Martin and Dettleff, Georg and Hannemann, Klaus (2016) Impact of Nozzle Separation on the Plumes of Two Parallel Thrusters. 30th International Symposium on Rarefied Gas Dynamics, 2016-07-10 - 2016-07-15, Victoria, Kanada. doi: 10.1063/1.4967669.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1063/1.4967669


Two identical, interacting plumes emanating from model thrusters with parallel axes separated from 50 to 150 throat diameters are studied numerically. The nozzle throat Reynolds number is set to nearly 15; 000 to match that of a small bi-propellant attitude control thruster, but the simulated gas is nitrogen with a stagnation temperature of 300K. The near-isentropic, dense plume core is computed with the DLR Navier-Stokes solver TAU and the conditions at a suitably defined interface are then used on the inflow boundary of a separately conducted direct simulation Monte Carlo (DSMC) simulation. The results are shown to agree favorably with particle flux measurements performed in the DLR high-vacuum plume test facility for chemical thrusters (STGCT). Varying the nozzle separation distance alters the degree of rarefaction in the interaction plane, and by tagging DSMC particles according to their origin, the effect on the individual plume may be investigated. The impact of nozzle axis separation on mass flux along the line formed by the intersecting planes of symmetry is compared to the case of two equal superposed (i. e. non-interfering) plumes.

Item URL in elib:https://elib.dlr.de/110308/
Document Type:Conference or Workshop Item (Speech)
Additional Information:http://rgd30.engr.uvic.ca/ Paper DOI: 10.1063/1.4967669 Conference Proceedings
Title:Impact of Nozzle Separation on the Plumes of Two Parallel Thrusters
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grabe, MartinUNSPECIFIEDhttps://orcid.org/0000-0003-0361-2734UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Plume interaction, DSMC, backflow
Event Title:30th International Symposium on Rarefied Gas Dynamics
Event Location:Victoria, Kanada
Event Type:international Conference
Event Start Date:10 July 2016
Event End Date:15 July 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Bachmann, Barbara
Deposited On:10 Jan 2017 15:59
Last Modified:24 Apr 2024 20:15

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.