elib
DLR-Header
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, 10.-15. Juli 2016, Victoria, Kanada. DOI: 10.1063/1.4967669

Full text not available from this repository.

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

Abstract

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
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Grabe, Martinmartin.grabe (at) dlr.deUNSPECIFIED
Dettleff, Georggeorg.dettleff (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.1063/1.4967669
Status:Published
Keywords:Plume interaction, DSMC, backflow
Event Title:30th International Symposium on Rarefied Gas Dynamics
Event Location:Victoria, Kanada
Event Type:international Conference
Event Dates:10.-15. Juli 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik
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:10 Jan 2017 15:59

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.