Three-dimensional modeling of magnetic nozzle processes

Heath M. Lorzel, Pavlos Mikellides

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Simulations of plasma flow through a magnetic nozzle were conducted using the timedependent, three-dimensional magnetohydrodynamics code, MACH3. The code's grid generation and mesh adaptivity routines were upgraded to improve resolution of physical processes of varying characteristic scale. Modeling of simplified magnetic nozzle flow using constant and classical isotropic resistivity aims to verify and provide preliminary quantitative depiction of the core-plasma flow, evolution of the magnetic field, and conversion of stagnation enthalpy to directed exhaust thrust energy. For stagnation conditions of 100 eV and 0.355 MPa, steady-state modeling using helium propellant and constant resistivity demonstrates a nearly isentropic expansion through the nozzle to exhaust speeds near 160 km/s. As expected, simulations using classical resistivity also exhibit similar trends but deviate more from the ideal isentropic solution when compared to the simulations using constant resistivity. At fixed plasma pressure and applied field the exhaust velocity scaled appropriately as the square root of the stagnation temperature.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Pages5975-5983
Number of pages9
StatePublished - Dec 10 2007
Event43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference - Cincinnati, OH, United States
Duration: Jul 8 2007Jul 11 2007

Publication series

NameCollection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Volume6

Other

Other43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
CountryUnited States
CityCincinnati, OH
Period7/8/077/11/07

ASJC Scopus subject areas

  • Space and Planetary Science

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