[Crib-list] SPEAKER: Miriam Kreher (MIT) - "Virtual" CRIBB Seminar - 12-1pm - Fri. Feb. 5, 2021

[Shirley Entzminger]

        COMPUTATIONAL RESEARCH in BOSTON and BEYOND SEMINAR
 			    (CRIBB)


ZOOM info:

https://mit.zoom.us/j/96155042770
Meeting ID: 961 5504 2770

====================================

DATE:	Friday, February 5, 2021

TIME:	12:00 Noon - 1:00 PM


TITLE:	Computational Analysis of Nuclear Reactor Transients


SPEAKER:    MIRIAM KREHER
 	    (MIT - Nuclear Science & Engineering)


ABSTRACT:

Since nuclear experiments are costly and require extensive safety 
precautions, the nuclear industry relies heavily on modeling and 
simulation of nuclear systems.  The state-of-the-art simulation tool for 
steady-state neutron transport is Monte Carlo, a probabilistic approach to 
solving for the distribution of neutrons.

Although it is the most accurate tool available, it is very 
computationally expensive. Monte Carlo is even more burdensome when 
coupled to other physics which allows us to properly capture feedback 
effects from density and temperature changes. Nonetheless, it is 
imperative to do such coupling because nuclear reactor designs rely on 
these intrinsic feedback mechanisms to ensure passive safety. In addition 
to coupling Monte Carlo with other physics codes, there is an additional 
hurdle to overcome for time-dependent simulations.  These are a few of the 
reasons why nuclear reactor simulations are a target of Exascale computing 
initiatives.

This talk will cover a number of coupling schemes that create feasible 
runtimes for coupled time-dependent Monte Carlo simulations.  In 
particular, we will give consideration to high-order/low-order schemes 
where Monte Carlo and diffusion solvers are paired to deliver accurate 
results in efficient time.

====

ABOUT THE SPEAKER:  Miriam Kreher is a PhD candidate in the Computational 
Reactor Physics Group in the MIT Nuclear Science and Engineering 
Department.  She is also a fellow of the DOE Computational Science 
Graduate Fellowship program. Kreher received a BS in Engineering Science 
from the University of Pittsburgh in 2016. Kreher is a contributor of 
OpenMC and currently serves on the Board of Directors of the American 
Nuclear Society.

=======================================

For information about the "Computational Research in Boston and Beyond 
Seminar (CRIBB), please visit:

 		https://math.mit.edu/sites/crib/


=================

Shirley A. Entzminger
Administrative Assistant II
Department of Mathematics
Massachusetts Institute of Technology
77 Massachusetts Avenue
Building 2, Room 350A
Cambridge, MA 02139
PHONE: 	(617) 253-4994
E-mail:	daisymae at math.mit.edu



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