摘要： Direct Simulation Monte Carlo (DSMC) is a 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. However, the investigation of the parameter space in simulations can be time consuming since 3D DSMC is computationally highly intensive. 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 have attempted to establish 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 simulation results and conclude on the sensitivity of solutions to certain inputs. It is found that among cases of water outgassing, the surface production rate distribution is the most influential variable to the flow field. 其他題名： Earth Moon Planets 出版者： Dordrecht: Springer Netherlands 出版日期： 2016-03-01 出處： Discover Space, 2016-03, Vol.117 (1), p.41-64 版權： Springer Science+Business Media Dordrecht 2016 版權： Springer Science+Business Media Dordrecht 2016. 版權： Copyright Springer Nature B.V. Mar 2016 識別號： ISSN: 0167-9295 識別號： ISSN: 2948-2941 識別號： ISSN: 1573-0794 識別號： EISSN: 1573-0794 識別號： EISSN: 2948-295X 識別號： DOI: 10.1007/s11038-016-9486-1
