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UID:submissions.pasc-conference.org_PASC23_sess143@linklings.com
SUMMARY:MS4F - Cross-Cutting Aspects of Exploiting Exascale Platforms for
High-Fidelity CFD in Turbulence Research
DESCRIPTION:Minisymposium\n\nWith the arrival of exascale computing, the t
heoretical computational performance has increased, opening up for unprece
dented simulation capabilities for Computational Fluid Dynamics (CFD) appl
ications. While offering high theoretical peak performance and high memory
bandwidth, to efficiently exploit these systems, complex programming mode
ls and significant programming investments are necessary. Furthermore, mos
t known pre and exascale systems currently planned or installed, e.g. Fron
tier, Leonardo and LUMI, contain a large fraction of accelerators. Thus, t
he challenge of porting and tuning scientific codes for these new platform
s can no longer be ignored. However, established CFD codes build on years
of verification and validation of their underlying numerical methods, pote
ntially preventing a complete rewrite and rendering disruptive code change
s a delicate task. Therefore, porting established codes to accelerators po
ses several interdisciplinary challenges, from formulating suitable numeri
cal methods to applying sound software engineering practices to cope with
disruptive code changes. The wide range of topics makes the exascale CFD t
ransition relevant to a broader audience, extending outside the traditiona
l fluid dynamics community. This minisymposium aims at bringing together t
he CFD community as a whole, from domain scientists to HPC experts, to dis
cuss current and future challenges towards enabling exascale fluid dynamic
s simulations on anticipated accelerated systems.\n\nSustainable and Relia
ble Computing with Tools: Analyzing Precision Appetites of CFD Application
s with VerifiCarlo\n\nThe energy consumption constraint for large-scale co
mputing encourages scientists to revise the architecture design of hardwar
e but also applications, algorithms, as well as the underlying working/ st
orage precision. The main aim is to make the computing cost sustainable an
d apply the lagom principl...\n\n\nRoman Iakymchuk (Umeå University)\n----
-----------------\nHierarchical Bayesian Multifidelity Models for Predicti
ons in Turbulent Flows\n\nConducting high-fidelity studies in fluid mechan
ics can be prohibitively expensive, particularly at high Reynolds numbers.
Thus, it is necessary to develop accurate yet cost-effective models for o
uter-loop problems involving turbulent flows. One way is multifidelity mod
els (MFMs) which aim at accura...\n\n\nSaleh Rezaeiravesh (University of M
anchester); Timofey Mukha (KTH Royal Institute of Technology); and Philipp
Schlatter (Friedrich-Alexander-Universität Erlangen-Nürnberg, KTH Royal I
nstitute of Technology)\n---------------------\nDirect Numerical Simulatio
n of a Rotor at Re=10000 and Analysis of Acoustic Sources\n\nThis
presentation describes the work that was performed as part of the Centre
of Excellence Excellerat Phase 1, where a Direct Numerical Simulation (DNS
) of a relatively complex four-bladed rotor at a tip-Reynolds number of 10
000 was performed. The emphasis is on the workflows necessary for...\n\n\n
Ronith Stanly (KTH Royal Institute of Technology); Eman Bagheri (Friedrich
-Alexander-Universität Erlangen-Nürnberg); Adam Peplinski (KTH Royal Insti
tute of Technology); Antonio Memmolo (CINECA); Stefan Becker (Friedrich-Al
exander-Universität Erlangen-Nürnberg); and Philipp Schlatter (KTH Royal I
nstitute of Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg)
\n---------------------\nSpectral Element Method Discontinuity Control thr
ough Accuracy Preserving Filtering and Data Driven Methods\n\nThe Spectral
Element Method (SEM), a high order variant of the Finite element method,
is an attractive and often used approach to solve partial differential equ
ations such as the Navier Stokes Equations, given that it provides high ac
curacy solutions with a relatively smaller number of grid points c...\n\n\
nAdalberto Perez (KTH Royal Institute of Technology); Saleh Rezaeiravesh (
University of Manchester); Stefano Markidis (KTH Royal Institute of Techno
logy); and Philipp Schlatter (Friedrich-Alexander-Universität Erlangen-Nür
nberg, KTH Royal Institute of Technology)\n\nDomain: Engineering\n\nSessio
n Chair: Philipp Schlatter (Friedrich-Alexander-Universität Erlangen-Nürnb
erg, KTH Royal Institute of Technology)
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