Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Aaron Knoll"'
Publikováno v:
Plasma, Vol 7, Iss 3, Pp 680-704 (2024)
We investigate the effects of the magnetostatic (B) field topology on the plasma behavior in a 2D collisionless simulation setup that represents an axial–azimuthal cross-section of a Hall thruster. The influence of the B-field topology is assessed
Externí odkaz:
https://doaj.org/article/c1ba7f0b3f5c41fca5cd82e68ef7c38e
Publikováno v:
Plasma, Vol 7, Iss 3, Pp 651-679 (2024)
The results from a wide-ranging parametric investigation into the behavior of the collisionless partially magnetized plasma discharge of three propellants—xenon, krypton, and argon—are reported in this two-part article. These studies are performe
Externí odkaz:
https://doaj.org/article/4038606da44e4bacb6ffff382e7f3acc
Publikováno v:
Acta Astronautica. 194:145-161
Radiofrequency excitation in single-stage Hall Effect Thrusters is proposed as a method to increase the performance of these devices. The topology of the magnetic and electric field within Hall Effect Thrusters makes it possible to excite quasistatic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e80eaca2baad6d143ffad10ce54bd363
https://doi.org/10.1016/j.actaastro.2022.01.033
https://doi.org/10.1016/j.actaastro.2022.01.033
In this article, we present an in-depth verification of the generalized electrostatic reduced-order particle-in-cell (PIC) scheme in a cross electric and magnetic field configuration representative of a radial–azimuthal section of a Hall thruster.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fc07b9a4080f32298e07334474d5a52
http://hdl.handle.net/10044/1/102943
http://hdl.handle.net/10044/1/102943
Autor:
Jesús Manuel Muñoz Tejeda, Aaron Knoll
An oxygen-fuelled Hall Effect Thruster is investigated at the Imperial Plasma Propulsion Laboratory vacuum chamber facilities over a different range of discharge channel axial lengths, ceramic walls and anode materials. The purpose of using oxygen as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94315e773e68125e3bc6ff4ce3f76e73
http://hdl.handle.net/10044/1/101280
http://hdl.handle.net/10044/1/101280
Plasma in Hall thrusters exhibits a complex behavior, characterized by the interplay between various dominant processes in each of the thruster’s coordinates. The emergence of high-power Hall thrusters in the recent years and the design modificatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae5b66b2a90b14c26b2d66f20428779d
http://hdl.handle.net/10044/1/100174
http://hdl.handle.net/10044/1/100174
Autor:
Aaron Knoll, Alexander Schwertheim
Publikováno v:
CEAS Space Journal. 14:3-17
We propose that a Hall effect thruster could be modified to operate on the products of water electrolysis. Such a thruster would exploit the low cost and high storability of water while producing gaseous hydrogen and oxygen in-situ as they are requir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2277557715e7d9948176aefb488d3c4c
https://doi.org/10.1007/s12567-021-00350-y
https://doi.org/10.1007/s12567-021-00350-y
Publikováno v:
Journal of Physics D: Applied Physics. 56:175201
The reduced-order particle-in-cell (PIC) scheme is a novel modeling approach that enables computationally efficient electrostatic kinetic simulations of plasma. In our previous publications, we demonstrated that a proof-of-concept implementation of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebd799d7d57a371aaca238f9611d565c
https://doi.org/10.1088/1361-6463/acbb15
https://doi.org/10.1088/1361-6463/acbb15
Autor:
Feng Wang, Carsten Burstedde, Nathan Marshak, Aaron Knoll, Chris R. Johnson, Will Usher, Timo Heister
Publikováno v:
Comput Graph Forum
Adaptive mesh refinement (AMR) techniques allow for representing a simulation’s computation domain in an adaptive fashion. Although these techniques have found widespread adoption in high-performance computing simulations, visualizing their data ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76252ae3cce1f907c8073859de7f17f4
https://doi.org/10.1111/cgf.13958
https://doi.org/10.1111/cgf.13958
The advent of high-power Hall thrusters and the increasing interest towards their use as a primary propulsion system for various missions have given a new boost to the efforts aiming at self-consistent predictive modeling of this thruster technology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a13cf6a2ddc7044018cb105d71f7afad