Welcome! Thanks for tuning in. As a computational physicist at the Cornell University Center for Advanced
Computing, I am interested in
modeling and simulating fluid dynamics in a variety of settings. My most
active
research collaboration at present is with the Turbulence and
Combustion Group, led by Prof. Stephen B. Pope. Prior
work has included investigations of basic plasma instabilities in the solar
convection zone, and simulations of diffraction-limited optical imaging through
imperfect media. As an occasional consultant, I attempt to use my experiences
on the Velocity 2
and 3 clusters (and before that, the IBM SP2)
to help others to port, run, and optimize their own applications on
high-performance parallel computers.
Recently (Spring 2007) I completed a semester of teaching ECE 586, Upper Atmospheric Physics II,
for the School of Electrical and Computer
Engineering.
Published work:
- Latest research paper:
-
"Investigation of strategies for the parallel implementation of ISAT in
LES/FDF/ISAT computations," Proceedings of the 4th Joint Meeting of the U.S.
Sections of the Combustion Institute, Philadelphia, PA, 2005 (with L. Lu, Z.
Ren, V. Raman, S. B. Pope, and H. Pitsch)
[abstract]
- Papers deriving and applying a model for anelastic MHD convection, published
in The Astrophysical Journal and its Supplement Series:
-
"Anelastic Magnetohydrodynamic Equations for Modeling Solar and Stellar
Convection Zones", ApJS 121(1), 247-264, 1999 (with Y. Fan)
-
"Two-dimensional Simulations of Buoyantly Rising, Interacting Magnetic Flux
Tubes", ApJ 493(1), 480-493, 1998 (with Y. Fan and E. G. Zweibel)
-
"Magnetoconvection Dynamics in a Stratified Layer. I. 2D Simulations and
Visualization", ApJ 441(2), 903-924, 1995 (with R. N. Sudan)
-
"Magnetoconvection Dynamics in a Stratified Layer. II. A Low-order Model
of the Tilting Instability", ApJ 441(2), 925-941, 1995
- Virtual Workshop modules:
- My vita lists other publications and many of
my recent activities.
![[Convection Cell]](Images/lantz_convcell.gif)
Undergraduate researchers:
Clark Amerault spent part of his senior year at Cornell (Summer and Fall 1999)
working with me on simulations of solar supergranulation. He produced a report on our
project featuring many nice MPEG visualizations. You may also want to visit
a mini-poster
with highlights from the video, "Bifurcations in 2D Rotating Magnetoconvection",
which made its debut in November, 1998 at the APS Div. of Fluid Dynamics meeting
in Philadelphia, PA. The visualizations in it were created with the help of the
following undergraduates:
- Adrienne Gvozdich, Cornell University (Fall 1998)
- Michael Katz, Cornell University (Fall 1998)
- Oleg Abramov, Clarkson University (Summer 1998)
Adrienne and Michael put together the final version of the video, building on
the work of Oleg and several other prior students listed below (Bryan, Cooke,
Rudin, Sanders, Wright). This line of research has largely been carried out in
conjunction with SPUR, the erstwhile Supercomputing Program for Undergraduate
Research at the Cornell Theory Center (aka CTC, back when that was our name).
A complete roster of my students from the SPUR era, along with links
to their final project reports, follows.
-
Modeling Solar Supergranulation, 1997 SPUR project with Justin Boland,
University of Texas at Dallas
-
Visualization Tools and Parallel Speedup, 1996-97 academic year projects
with Howard Sanders, Cornell University
-
Dynamics of Solar Magnetoconvection, 1996 SPUR project with Cynthia
Rudin, SUNY at Buffalo
-
Dynamics of Solar Convection, 1995 SPUR project with Jason Cooke
and Kevin Wright, SUNY at Stony Brook and Montana State University
(respectively)
-
Rotating Thermal Convection in Astrophysics, 1994 SPUR project
with David Bryan, Richard Stockton College of New Jersey
-
Modeling and Visualization of Magnetohydrodynamics, 1992 SPUR project with
Michael Wiltberger, Clarkson University. (Published in CTC's 1993 online
brochure, Discovery: Insights Through Advanced Computing, under the
title, "The Simmering Sun.")
Some favorite links:
Solar physics
- Solar images at
SDAC
- NASA/Marshall Solar Physics
- Ulysses
- Science - Primary Mission Results
- Coronal mass ejection (CME) movies from SOHO/LASCO:
- LASCO-C2 movie (222K mpeg) of
April 7, 1997 full-halo coronal mass ejection (CME) event
- LASCO-C3 movie (760K mpeg) of
Dec. 22-27, 1997, with CME's, the galactic center, and a sungrazing comet
- A Virtual Tour of the
Sun
- The Sun from
The Nine Planets Solar System Tour
(a.k.a. eightplanets.org, since Pluto was demoted!)
- Sun from
Views of the Solar System
- Solar
Studies and Education at HAO
Space physics
- Today's Space Weather and
Current Solar Forecast
- Current Solar Wind
Conditions from Rice Univ.
- SpaceWeather.com
- Auroral Activity Observation
Network
- The Aurora Page at MTU
- Red Sprites and Blue Jets
Astronomy
- Stars and
Constellations
- Naked Eye Observations
- A 3-year-old's perspective on the dilemma of
daytime vs. nighttime astronomy
- A 4-year-old's speculation on an alternate
terrestrial gravity field
Pretty old stuff (but maybe still interesting?):
Last updated on 9/19/07 by Steve Lantz (slantz ~at~ cac.cornell.edu)
