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DTSTAMP:20210916T132528Z
LOCATION:Ernesto Bertarelli
DTSTART;TZID=Europe/Stockholm:20210706T140000
DTEND;TZID=Europe/Stockholm:20210706T160000
UID:submissions.pasc-conference.org_PASC21_sess138@linklings.com
SUMMARY:Excellerat - Extreme CFD for Engineering Applications, Part II
DESCRIPTION:Minisymposium\n\nComputational fluid dynamics is one of the ma
 in drivers of exascale computing, both due to its high relevance in today'
 s world (from nano fluidics up to planetary flows), but also due to the in
 herent multiscale properties of turbulence. The numerical treatment is not
 oriously difficult due to the disparate scales in turbulence, and the need
  for resolving local features. In addition, aspects such as the quantifica
 tion of (internal or external) uncertainties is becoming a necessity, toge
 ther with in-situ visualisation/postprocessing. The recent trend in numeri
 cal methods goes towards high-fidelity methods (for instance continuous an
 d discontinuous Galerkin) which are suitable for modern computers; however
 , relevant issues such as scaling, accelerators and heterogeneous systems,
  high-order meshing and error control, are still far from solved when it c
 omes to largest scale simulations, e.g. in automotive and aeronautical app
 lications. This two part minisymposium brings together eight experts from 
 various international institutions (Europe, America, Japan) to discuss cur
 rent and future issues of extreme scale CFD in engineering applications, w
 ith special focus on accurate CFD methods, and their implementation on cur
 rent HPC systems. The interaction between participants of the Horizon2020 
 Centre of Excellence Excellerat and external experts will be particularly 
 fruitful.\n\nIn-Situ Visualization in Nek5000 with ParaView Catalyst\n\nSc
 hlatter\n\nIn-situ visualization on HPC systems allows us to analyze simul
 ation results that would otherwise be impossible, given the size of the si
 mulation data sets and offline post-processing execution time. We design a
 nd develop in-situ visualization with Paraview Catalyst in Nek5000, a mass
 ively parallel ...\n\n---------------------\nDynamic Load Balancing on Het
 erogeneous Architectures: An airplane Aerodynamics Use Case\n\nBorrell, Oy
 arzun, Garcia, Mira, Lehmkuhl...\n\nWe can affirm with quite a certainty t
 hat future Exascale systems will be based on heterogeneous architectures, 
 including accelerators such as GPUs. We can also expect significant variab
 ility on the performance of the computing devices engaged in a simulation;
  due to the explosion of parallelism and...\n\n---------------------\nSimu
 lation of Multiphysics Applications Using Hierarchical Cartesian Meshes an
 d Dynamic Load Balancing\n\nMeinke, Niemoeller, Herff, Satcunanathan, Lint
 ermann...\n\nThe computational methods, their HPC implementation and recen
 t results of various large scale engineering multiphysics applications wil
 l be presented in this paper. The computational method is based on a unifi
 ed hierarchical Cartesian mesh with an immersed boundary formulation, idea
 lly suited for th...\n\n---------------------\nUQ, Optimization, and Multi
 fidelity Models for Simulations of Turbulent Flows\n\nRezaeiravesh\n\nSeve
 ral challenges are involved in scale-resolving simulations of wall-bounded
  turbulent flows which appear in many engineering applications. The challe
 nges include high computational cost of the simulations especially at high
  Reynolds numbers, and also the uncertainties in the simulations outputs d
 ...\n\n\nDomain: CS and Math, Physics, Engineering
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