POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow
The configuration of Tandem Cylinders is a typical one in researching noise and interactions between different components, where the distance-diameter ratio is a very significant parameter with which the flow form varies a lot. To clearly research the ratio's effect on tandem cylinders flow as...
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The Northwestern Polytechnical University
2018-04-01
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doaj-00b2b1f7d50140c98fca9e00af1e00532021-05-02T19:21:48ZzhoThe Northwestern Polytechnical UniversityXibei Gongye Daxue Xuebao1000-27582609-71252018-04-0136222022810.1051/jnwpu/20183620220jnwpu2018362p220POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow012345School of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversitySwiss federal Institute of Technology in Lausanne(EPFL)School of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversityThe configuration of Tandem Cylinders is a typical one in researching noise and interactions between different components, where the distance-diameter ratio is a very significant parameter with which the flow form varies a lot. To clearly research the ratio's effect on tandem cylinders flow as well as the unsteady flow physics, a reduced-order model is built where Proper orthogonal Decomposition(POD) is usedto extract reduced basis modes, and Kriging model is used to train sample data and interpolate projection coefficents for each reduced basis. To ensure the snapshots' accuracy, the scale-adaptive simulation (SAS) model based on SST turbulence model is used to predict time-dependent flow field. By comparing with solutions provided by the numerical solver as well as experimental data, the reduced model presents a good accuracy and efficiency. And then based on the reduced basis, the change regulation of the time-average flow is summarized.https://www.jnwpu.org/articles/jnwpu/pdf/2018/02/jnwpu2018362p220.pdfkrigingproper orthogonal decompositiontandem cylindersdistance-diameter ratioscale-adaptive simulationflow fieldsmesh generationturbulence models |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
title |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow |
spellingShingle |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow Xibei Gongye Daxue Xuebao kriging proper orthogonal decomposition tandem cylinders distance-diameter ratio scale-adaptive simulation flow fields mesh generation turbulence models |
title_short |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow |
title_full |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow |
title_fullStr |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow |
title_full_unstemmed |
POD-Kriging Reduced Method's Application in Tandem Cylinders' Flow |
title_sort |
pod-kriging reduced method's application in tandem cylinders' flow |
publisher |
The Northwestern Polytechnical University |
series |
Xibei Gongye Daxue Xuebao |
issn |
1000-2758 2609-7125 |
publishDate |
2018-04-01 |
description |
The configuration of Tandem Cylinders is a typical one in researching noise and interactions between different components, where the distance-diameter ratio is a very significant parameter with which the flow form varies a lot. To clearly research the ratio's effect on tandem cylinders flow as well as the unsteady flow physics, a reduced-order model is built where Proper orthogonal Decomposition(POD) is usedto extract reduced basis modes, and Kriging model is used to train sample data and interpolate projection coefficents for each reduced basis. To ensure the snapshots' accuracy, the scale-adaptive simulation (SAS) model based on SST turbulence model is used to predict time-dependent flow field. By comparing with solutions provided by the numerical solver as well as experimental data, the reduced model presents a good accuracy and efficiency. And then based on the reduced basis, the change regulation of the time-average flow is summarized. |
topic |
kriging proper orthogonal decomposition tandem cylinders distance-diameter ratio scale-adaptive simulation flow fields mesh generation turbulence models |
url |
https://www.jnwpu.org/articles/jnwpu/pdf/2018/02/jnwpu2018362p220.pdf |
_version_ |
1721488378645446656 |