John Loverich's Research
Research
and Professional Information
I finished a Ph.D. at the University of Washington in December 2005 and
now I'm working as a contractor
for AFRL Edwards through Advatech Pacific. My new research is related
to my Ph.D. work and is focused on plasma physics algorithm development
and high energy density propulsion.
University of Washington Aerospace CFD
Lab Homepage
The following information can be found on our
UW Aerospace CFD LAB homepage along with work performed
by the other members of the lab who are working on different aspects of
the same project.
Dissertation
J. Loverich, "A
Discontinuous Galerkin Algorithm for the
Two-Fluid Plasma Model with Application to the Z-Pinch"
Peer Reviewed Publications (University of
Washington Years)
J. Loverich and U.
Shumlak, "Non-Linear Full Two-Fluid
Study of Instabilities in an Axisymmetric Z-Pinch",
Submitted to Physics of Plasmas
J. Loverich, A. Hakim, U. Shumlak, "A Discontinuous Galerkin Method for
Ideal Two-Fluid Plasma Equations",
Submitted to Journal of Computational Physics
A. Hakim, J. Loverich, U. Shumlak, "A High Resolution Wave Propagation
Scheme for Ideal Two-Fluid Plasma Equations",
Submitted to Journal of Computational Physics
J. Loverich, U. Shumlak, "A Discontinuous Galerkin Method for the
Two-Fluid Plasma Model",
Computer Physics Communications - CCP2004 Conference Proceedings.
U. Shumlak, J.
Loverich, "Approximate Riemann solver for the
two-fluid plasma model"
Journal of Computational Physics 187 (2003) 620-638.
Public Conferences Papers, Posters and
Presentations - (AFRL Edwards / Advatech Pacific)
J.
Loverich and J-L. Cambier,"Discontinuous Galerkin methods for fluid
plasma modeling with applications to plasmoid accelerators", SIAM
Conference on computational science and engineering, Costa Mesa
California, February 22nd, 2007
PDF of Presentation
J.
Loverich and J-L. Cambier , "A Plasma Algorithm for Plasmoid
Accelerator Modeling", APS Division of Plasma Physics, Philadelphia
Pennsylvania, October 30 - November 4th, 2006
PDF
of Poster
Conference Papers, Posters and Presentations - (University of
Washington Years)
J. Loverich, U.
Shumlak, "A Discontinuous Galerkin Method for Plasma
Dynamic Simulations: The Full Two-Fluid System",
APS Division of Plasma Physics, Denver Colorado, October 24-28, 2005
J. Loverich, U.
Shumlak, "Ideal Two-Fluid Simulations of
Collisionless Reconnection and the Z-Pinch
using the Discontinuous Galerkin Method", IEEE International Conference
on Plasma Science, Monterey
California, June 18-23, 2005
J. Loverich, Uri
Shumlak, "A Discontinuous Galerkin Method
for the Two-Fluid Plasma Model",
Conference on Computational Physics, September 1-4, 2004, Genoa, Italy
J. Loverich, U.
Shumlak, C. Aberle, A. Hakim, "A Finite
Volume Algorithm for
the Two-Fluid Plasma System", 16th AIAA computational fluid dynamics
conference, AIAA 2003-4238
J. Loverich, U.
Shumlak, "A Finite Volume Scheme for the
Two-Fluid Plasma System", ICOPS 2002, May 26-30.
Masters Thesis
A Finite Volume Algorithm for the Two-Fluid Plasma System in One
Dimension
Random Presentations
Presentation at Johns Hopkins Applied Physics Lab 8/15/2005
Seminar at Edwards
Air Force Base 12/9/2004
Aeronautics and
Astronautics Plasma Seminar 4/19/2004
Links to other researchers with work
relevant to our own
Magnetic
Reconnection Movies
I
made some nice magnetic reconnection
movies (GEM challenge magnetic reconnection) with my Ph.D. code and
those can be downloaded below. The first shows the magnitude of
electron momentum from
0 ion cyclotron times to 40 ion cyclotron times
The
next movie shows the magnitude of ion
momentum over the same time.
Lower Hybrid
Drift Instability
While
doing our numerical experiments we
repeatedly ran across an instability that
appeared in a number of different simulations in a number of different
configurations. We speculate
that the instability is related to the lower hybrid drift instability.
The image linked below shows
this situation. The initial conditions are similar to what you would
expect in a theta pinch with a high density plasma inside and reversed
magnetic fields creating a current layer moving in
the plane.
