Numerical analysis of radio frequency inductively coupled ion thruster and computation of its performance parameters

Download

index.pdf

Date

2019

Author

Bozkurt, Erdal

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

346
views

214
downloads

The main goal of this thesis is geometric and parametric analysis of a simulated cylin-drical two-gridded Radio Frequency Inductively Coupled (RF-ICP) ion thruster. Inaddition, instrumental performance of this thruster and the effects of a fixed shapeof the electrodes on ion trajectories are investigated. The simulations of the plasmaand the ion optics are performed by using COMSOL Multiphysics software. The firststep is checking the reliability of the software. Radial and axial simulation parametricresults of chosen experimental geometry are compared with the results of the exper-iment. After this validation, the coil turn, the anode electrical potential, the plasmachamber geometry, the coil RF electrical frequency, and finally, the coil location uponplasma chamber are changed, and the results are discussed.The next step is focusing on the performance parameters that are thrust and specificimpulse. For this purpose, Bohm ion velocity and the ion density at the sheath edgeare determined to calculate the current density for the geometry (AR= 2, CT=3). At last, ion optic system of the RF-ICP thruster is analyzed. Perveance and ion trajectories of the thruster are studied. The optimum perveance is found as1.09486×10−6A/V3/2for9.49mAChild current. Also, the effects of specified boundarywhich ions are released are investigated to the trajectories of the ions.

Subject Keywords

Plasma Physics., Keywords: Plasma Physics, Inductively Coupled RF Plasma, RF ICP Ion Thrusters, COMSOL.

URI

http://etd.lib.metu.edu.tr/upload/12624676/index.pdf
https://hdl.handle.net/11511/44346

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Performance Evaluation of the Numerical Flux Jacobians in Flow Solution and Aerodynamic Design Optimization Ezertas, Alper; Eyi, Sinan (2010-07-16) A direct sparse matrix solver is utilized for the flow solution and the analytical sensitivity analysis. The effects of the accuracy of the numerical Jacobians on the accuracy of sensitivity analysis and on the performance of the Newton's method flow solver are analyzed in detail. The gradient based aerodynamic design optimization is employed to demonstrate those effects.
Observation of coherent nonlinear interactions in the ion velocity distribution function Uzun Kaymak, İlker Ümit (2006-11-01) Using laser induced fluorescence (LIF) and higher order spectral analysis, we present the first measurements of phase space resolved coherent nonlinear interactions among the components of low frequency density fluctuations, (omega <=omega(ci)), in a linearly magnetized device. The bicoherence calculations employing the two point correlation technique suggest that there are two different coherent nonlinear wave-wave interactions in the measured spectrum. The first one, having a short correlation length and ...
Ion implantation and deposition on the inner surfaces of cylinders by exploding metallic foils Demokan, O (2000-10-01) A novel scheme for ion deposition and possibly ion implantation on the inner surfaces of cylindrical targets is proposed and experimentally tested. A large current is passed through a coaxial table-type structure, composed of a straight conductor and a thin metallic foil, surrounding it. The foil evaporates and ionizes forming a metallic plasma, which is pushed radially outward due to the pressure of the magnetic field, confined to the region between the plasma and the conductor. The ions of the foil materi...
Numerical investigation of a dc glow discharge in an argon gas: two-component plasma model Kemaneci, Efe Hasan; Rafatov, İsmail; Department of Physics (2009) This thesis deals with a one and two dimensional numerical modeling of a low-pressure DC glow discharge in argon gas. We develop two-component fluid model which uses the diffusion-drift theory for the gas discharge plasma and consists of continuity equations for electrons and ions, as well as Poisson equation for electric field. Numerical method is based on the control volume technique. Calculations are carried out in MATLAB environment. Computed results are compared with the classic theory of glow discharg...
Hamilton-Jacobi theory of continuous systems Güler, Y. (Springer Science and Business Media LLC, 1987-8) The Hamilton-Jacobi partial differnetial equation for classical field systems is obtained in a 5n-dimensional phase space and it is integrated by the method of characteristics. Space-time partial derivatives of Hamilton’s principal functionsS μ (Φ i ,x ν ) (μ,ν=1,2,3,4) are identified as the energy-momentum tensor of the system.

Citation Formats

E. Bozkurt, “Numerical analysis of radio frequency inductively coupled ion thruster and computation of its performance parameters,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Aerospace Engineering., Middle East Technical University, 2019.