In this report we present advances in our research on direct aeroacoustics and uncertainty quantification, based on the high-order Discontinuous Galerkin solver FLEXI. Oscillation phenomena triggered by flow over cavities can lead to an unpleasant tonal (whistling) noise, which provides motivation for industry and academia to better understand the underlying mechanisms. We present a numerical setup capable of capturing these phenomena with high efficiency, as we show by comparison to experimental data and results from industry. Some of these phenomena are highly sensitive towards flow conditions, which makes an integrated approach regarding these conditions necessary. This is the goal of uncertainty quantification. We present software for both intrusive and non-intrusive uncertainty quantification methods. We investigate convergence and computational performance. The development of both codes was in parts carried out in cooperation with HLRS. Apart from validation results, we show a non-intrusive simulation of 3D turbulent cavity noise.
%0 Conference Paper
%1 10.1007/978-3-030-66792-4_24
%A Beck, Andrea
%A Dürrwächter, Jakob
%A Kuhn, Thomas
%A Meyer, Fabian
%A Munz, Claus-Dieter
%A Rohde, Christian
%B High Performance Computing in Science and Engineering '19
%C Cham
%D 2021
%E Nagel, Wolfgang E.
%E Kröner, Dietmar H.
%E Resch, Michael M.
%I Springer International Publishing
%K ians imported vorlaeufig
%P 355--371
%T Uncertainty Quantification in High Performance Computational Fluid Dynamics
%X In this report we present advances in our research on direct aeroacoustics and uncertainty quantification, based on the high-order Discontinuous Galerkin solver FLEXI. Oscillation phenomena triggered by flow over cavities can lead to an unpleasant tonal (whistling) noise, which provides motivation for industry and academia to better understand the underlying mechanisms. We present a numerical setup capable of capturing these phenomena with high efficiency, as we show by comparison to experimental data and results from industry. Some of these phenomena are highly sensitive towards flow conditions, which makes an integrated approach regarding these conditions necessary. This is the goal of uncertainty quantification. We present software for both intrusive and non-intrusive uncertainty quantification methods. We investigate convergence and computational performance. The development of both codes was in parts carried out in cooperation with HLRS. Apart from validation results, we show a non-intrusive simulation of 3D turbulent cavity noise.
%@ 978-3-030-66792-4
@inproceedings{10.1007/978-3-030-66792-4_24,
abstract = {In this report we present advances in our research on direct aeroacoustics and uncertainty quantification, based on the high-order Discontinuous Galerkin solver FLEXI. Oscillation phenomena triggered by flow over cavities can lead to an unpleasant tonal (whistling) noise, which provides motivation for industry and academia to better understand the underlying mechanisms. We present a numerical setup capable of capturing these phenomena with high efficiency, as we show by comparison to experimental data and results from industry. Some of these phenomena are highly sensitive towards flow conditions, which makes an integrated approach regarding these conditions necessary. This is the goal of uncertainty quantification. We present software for both intrusive and non-intrusive uncertainty quantification methods. We investigate convergence and computational performance. The development of both codes was in parts carried out in cooperation with HLRS. Apart from validation results, we show a non-intrusive simulation of 3D turbulent cavity noise.},
added-at = {2021-06-07T09:10:54.000+0200},
address = {Cham},
author = {Beck, Andrea and D{\"u}rrw{\"a}chter, Jakob and Kuhn, Thomas and Meyer, Fabian and Munz, Claus-Dieter and Rohde, Christian},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2dd5c8cf22cfa93923f3457599769f9ae/sylviazur},
booktitle = {High Performance Computing in Science and Engineering '19},
editor = {Nagel, Wolfgang E. and Kr{\"o}ner, Dietmar H. and Resch, Michael M.},
interhash = {5a2a1709c146bc678cacff780a795451},
intrahash = {dd5c8cf22cfa93923f3457599769f9ae},
isbn = {978-3-030-66792-4},
keywords = {ians imported vorlaeufig},
pages = {355--371},
publisher = {Springer International Publishing},
timestamp = {2021-06-07T07:10:54.000+0200},
title = {Uncertainty Quantification in High Performance Computational Fluid Dynamics},
year = 2021
}
