[Faculty] Fwd: [CSRC.COLLOQUIUM] "The Convergence Of Exascale Computing, Data Science and Visualization Towards Mitigating Climate Change"

[Jose Castillo]

*[image: SDSU_CSRC Logo.jpg]**** Registration is required in order to get
the link to join the seminar online. *

* Please register at the following site to receive information on how to
join the seminar online.   *Meeting Registration - Zoom
<https://us06web.zoom.us/meeting/register/tZ0rduyqrzsjEtUgMGD8bsO1zaIk8eRNtEZN?_x_zm_rtaid=35CqNNq7SmCGMHISvvhFgQ.1693344589248.b2cc73083a34d65c7fc56353beccb189&_x_zm_rhtaid=809#/registration>

DATE:

*Friday, September 8, 2023*


TITLE:
*The Convergence Of Exascale Computing, Data Science and Visualization
Towards Mitigating Climate Change  *
VIEWING PARTY
GMCS 314

TIME:
*3:30-5:00PM*



LOCATION:
*Registration is required in advance.  Please register at the following
site to receive information on how to join the seminar online.   *Meeting
Registration - Zoom
<https://us06web.zoom.us/meeting/register/tZ0rduyqrzsjEtUgMGD8bsO1zaIk8eRNtEZN?_x_zm_rtaid=35CqNNq7SmCGMHISvvhFgQ.1693344589248.b2cc73083a34d65c7fc56353beccb189&_x_zm_rhtaid=809#/registration>


SPEAKER/BIO:
*Dr. Jacqueline H. Chen, Senior Scientist, Sandia National Laboratory*



ABSTRACT:
Mitigating climate change while providing the nation’s transportation and
electricity are important to energy and environmental security. The shift
to hydrogen as a clean energy carrier is a promising strategy to reduce CO2
emissions in the face of increasing energy demand. While hydrogen has
drawbacks as an energy carrier due to its low energy density, ammonia is
simpler to transport and store for extended periods of time, making it an
attractive carbon-free energy carrier for off-grid localized power
generation and marine shipping. However ammonia has poor reactivity and
forms NOx and N2O emissions. Poor ammonia reactivity can be circumvented by
partial cracking of ammonia to form ammonia/hydrogen/nitrogen blends
tailored to match conventional hydrocarbon fuel properties. However,
combustion of ammonia/hydrogen/nitrogen blends at high pressure, and the
coupling between turbulence and fast hydrogen diffusion remains poorly
understood. Pre-exascale computing provides a unique opportunity for direct
numerical simulation (DNS) of turbulent combustion with ammonia/hydrogen
blends to investigate pressure effects on combustion rate,blow-off limits
and NOx and N2O formation.

Exascale computing introduces challenges for data management and the need
for reduced order surrogate models(ROMS) for chemical species dimension
reduction and for novel in situ analysis and visualization methods. A novel
model driven on-the-fly ROM recently formulated and implemented in reactive
flow DNS to reduce the computational cost of chemistry will be described.
Recent advances in topological segmentation, feature extraction, and
statistical summarization for extreme-scale data will be discussed in the
context of in situ analysis workflows that capture salient time-varying
features.

Bio:   Jacqueline H. Chen is a Senior Scientist at Sandia National
Laboratories. She has contributed broadly to research in turbulent
combustion elucidating turbulence-chemistry interactions in combustion
through direct numerical simulations. To achieve scalable performance of
DNS on heterogeneous computer architectures she leads an interdisciplinary
team of computer scientists, applied mathematicians and computational
scientists to develop an exascale direct numerical simulation capability
for turbulent combustion with complex chemistry and multi-physics.She is a
member of the National Academy of Engineering and a Fellow of the
Combustion Institute and the American Physical Society. She is an Associate
Fellow of the AIAA. She is member of the Council for the American
Association for the Advancement of Science. She received the Combustion
Institute’s Bernard Lewis Gold Medal Award in 2018, the Society of Women
Engineers Achievement Award in 2018, and the Department of Energy Office of
Science Distinguished Scientists Fellow Award in 2020,

Department Link <https://crf.sandia.gov/>


Host:
*Jose Castillo (CSRC)* *and the Sustainable Horizons Institute CRLC Virtual
Seminar Series  *


Note: Videos of previous colloquium talks can be seen on the CSRC website
in the colloquium archive section or on the CSRC YouTube page here
<https://www.youtube.com/channel/UCN0ZEztlmyDqG2pm-Rle_Eg/feed>.



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