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3D Direct Simulation Monte Carlo Modelling of the Inner Gas Coma of Comet 67P/ Churyumov-Gerasimenko: A Parameter Study

Liao, Y. and Su, C. C. and Marschall, R. and Wu, J. S. and Rubin, M. and Lai, I. L. and Ip, W. H. and Keller, H. U. and Knollenberg, J. and Kührt, E. and Skorov, Y. and Thomas, N. (2016) 3D Direct Simulation Monte Carlo Modelling of the Inner Gas Coma of Comet 67P/ Churyumov-Gerasimenko: A Parameter Study. Earth Moon and Planets, 117, pp. 41-64. Springer. DOI: 10.1007/s11038-016-9486-1 ISSN 0167-9295

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Abstract

Direct Simulation Monte Carlo (DSMC) is a very powerful numerical method to study rarefied gas flows such as cometary comae and has been used by several authors over the past decade to study cometary outflow. The drawback with 3D DSMC is that it is computationally highly intensive. This implies that investigation of parameter space can be time consuming. For the target of ESA’s Rosetta mission, Comet 67P/Churyumov-Gerasimenko, we have identified to what extent modification of several parameters influence the 3D flow and gas temperature fields and established the reliability of inferences about the initial conditions from in situ and remote sensing measurements. A large number of DSMC runs have been completed with varying input parameters. In this work we present the models and simulation results and conclude on the sensitivity of solutions to certain inputs.

Item URL in elib:https://elib.dlr.de/97414/
Document Type:Article
Title:3D Direct Simulation Monte Carlo Modelling of the Inner Gas Coma of Comet 67P/ Churyumov-Gerasimenko: A Parameter Study
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Liao, Y.Physics Institute, University of Bern, Switzerland, email: ying.liao (at) space.unibe.chUNSPECIFIED
Su, C. C.Department of Mechanical Engineering, National Chiao Tung University, TaiwanUNSPECIFIED
Marschall, R.Physics Institute, University of Bern, SwitzerlandUNSPECIFIED
Wu, J. S.Department of Mechanical Engineering, National Chiao Tung University, TaiwanUNSPECIFIED
Rubin, M.Physics Institute, University of Bern, SwitzerlandUNSPECIFIED
Lai, I. L.Institute of Space Science, National Central University, TaiwanUNSPECIFIED
Ip, W. H.Institute of Space Science, National Central University, TaiwanUNSPECIFIED
Keller, H. U.Technical University of Braunschweig, GermanyUNSPECIFIED
Knollenberg, J.joerg.knollenberg (at) dlr.deUNSPECIFIED
Kührt, E.ekkehard.kuehrt (at) dlr.deUNSPECIFIED
Skorov, Y.Technical University of Braunschweig, GermanyUNSPECIFIED
Thomas, N.Physics Institute, University of Bern, SwitzerlandUNSPECIFIED
Date:2016
Journal or Publication Title:Earth Moon and Planets
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:117
DOI :10.1007/s11038-016-9486-1
Page Range:pp. 41-64
Publisher:Springer
ISSN:0167-9295
Status:Published
Keywords:Comets, coma, Direct Simulation Monte Carlo (DSMC)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Instrumente
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Bründl, Tara-Marie
Deposited On:12 Jul 2016 10:02
Last Modified:06 Sep 2019 15:24

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