One dimensional numerical analysis of plasma properties in the discharge channel of a hall effect thruster

Download

index.pdf

Date

2014

Author

Yüncüler, Çınar

Metadata

Show full item record

Item Usage Stats

101
views

181
downloads

The aim of this study is to understand and simulate the physical processes occurring in the discharge channel of a Hall effect thruster. Accordingly, based on a physical model proposed by A. I. Morozov, one-dimensional fluid and hybrid numerical codes are developed on Matlab software and applied to the analysis of axial distributions of plasma properties in the discharge channel of the thruster. In the hybrid model, ions are described by the kinetic Vlasov equation, while electrons and neutral atoms are treated as fluids. Initially, stationary profiles of the plasma properties are obtained. Then solving time dependent equations, time evolution of these properties is investigated. In different operating regimes, damped, periodic, and aperiodic irregular oscillations of the plasma properties are observed and discussed. The performance parameters of the thruster such as thrust, efficiency and specific impulse are estimated for different input conditions. The results obtained from fluid and hybrid models are compared.

Subject Keywords

Hall effect., Thrusters., Numerical analysis., Space vehicles

URI

http://etd.lib.metu.edu.tr/upload/12618105/index.pdf
https://hdl.handle.net/11511/24096

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Critical behavior of the spontaneous polarization and the dielectric susceptibility close to the cubic-tetragonal transition in BaTiO3 Yurtseven, Hasan Hamit (2015-09-01) Using Landau mean field model, the spontaneous polarization and the dielectric susceptibility are analyzed as functions of temperature and pressure close to the cubic-tetragonal (ferroelectric-paraelectric) transition in BaTiO3. From the analysis of the dielectric susceptibility and the spontaneous polarization, the critical exponents are deduced in the classical and quantum limits for BaTiO3. From the critical behavior of the dielectric susceptibility, the spontaneous polarization can be described for the ...
Finite Difference Solutions of 2D Magnetohydrodynamic Channel Flow in a Rectangular Duct Arslan, Sinem (2019-10-04) In this study, the MHD flow of an electrically conducting fluid is considered in a long channel (pipe) of rectangular cross-section along with the z-axis. The fluid is driven by a pressure gradient along the z-axis. The flow is steady, laminar, fully-developed and is influenced by an external magnetic field applied perpendicular to the channel axis. So, the velocity field V=(0,0,V) and the magnetic field B=(0, B_{0}, B) have only channel-axis components V and B depending only on the plane coordinates x an...
2D simulation studies and initial experimental results for hall effect imaging / Gözü, Mehmet Soner; Gençer, Nevzat Güneri; Department of Electrical and Electronics Engineering (2014) In this thesis, 2D simulation studies of Hall Effect Imaging (HEI) technique using linear phased array transducer are performed and initial experimental results are obtained. The goal of HEI is to image the conductivity distribution in biological bodies. For this purpose, HEI uses the interaction of ultrasound with a static magnetic field to generate velocity current density distribution inside the body. Due to the velocity current density, a resultant voltage is sensed by electrodes attached on the surface...
Numerical method for conform reflection Kushnarov, Andriy; Öktem, Hakan; Department of Scientific Computing (2010) Conformal map has application in a lot of areas of science, e.g., fluid flow, heat conduction, solidification, electromagnetic, etc. Especially conformal map applied to elasticity theory can provide most simple and useful solution. But finding of conformal map for custom domain is not trivial problem. We used a numerical method for building a conformal map to solve torsion problem. In addition it was considered an infinite system method to solve the same problem. Results are compared.
Direct numerical simulation of pipe flow using a solenoidal spectral method Tugluk, Ozan; Tarman, Işık Hakan (2012-05-01) In this study, a numerical method based on solenoidal basis functions, for the simulation of incompressible flow through a circular-cylindrical pipe, is presented. The solenoidal bases utilized in the study are formulated using the Legendre polynomials. Legendre polynomials are favorable, both for the form of the basis functions and for the inner product integrals arising from the Galerkin-type projection used. The projection is performed onto the dual solenoidal bases, eliminating the pressure variable, si...

Citation Formats

Ç. Yüncüler, “One dimensional numerical analysis of plasma properties in the discharge channel of a hall effect thruster,” M.S. - Master of Science, Middle East Technical University, 2014.