Publication result detail

Decomposition of the Swirling Flow Fields

RUDOLF, P.; JÍZDNÝ, M.

Original Title

Decomposition of the Swirling Flow Fields

English Title

Decomposition of the Swirling Flow Fields

Type

Paper in proceedings (conference paper)

Original Abstract

Paper presents application of the proper orthogonal decomposition method (POD) on the swirling flows. POD enables to extract the most energetic eigenmodes of pressure and velocity fields. CFD data from unsteady simulations serve as the input for POD. Presented methodology enables to study both spatial and temporal behavior of the eigenmodes, which is documented on an example of swirling flow in a draft tube. A new view of the swirling flow dynamics, complementary to current approaches, is obtained. Proper orthogonal decomposition identifies and ranks the modes according to their energy, therefore a simplified low dimensional model can be constructed and further analyzed.

English abstract

Paper presents application of the proper orthogonal decomposition method (POD) on the swirling flows. POD enables to extract the most energetic eigenmodes of pressure and velocity fields. CFD data from unsteady simulations serve as the input for POD. Presented methodology enables to study both spatial and temporal behavior of the eigenmodes, which is documented on an example of swirling flow in a draft tube. A new view of the swirling flow dynamics, complementary to current approaches, is obtained. Proper orthogonal decomposition identifies and ranks the modes according to their energy, therefore a simplified low dimensional model can be constructed and further analyzed.

Keywords

swirling flow, decomposition, eigenmode, draft tube, vortex rope

Key words in English

swirling flow, decomposition, eigenmode, draft tube, vortex rope

Authors

RUDOLF, P.; JÍZDNÝ, M.

RIV year

2012

Released

26.10.2011

Publisher

Faculty of Mechanical Engineering University of Belgrade

Location

Belgrade

ISBN

978-86-7083-740-9

Book

Proceedings of the 4-th IAHR International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems

Pages from

131

Pages to

141

Pages count

9

BibTex

@inproceedings{BUT75144,
  author="Pavel {Rudolf} and Martin {Jízdný}",
  title="Decomposition of the Swirling Flow Fields",
  booktitle="Proceedings of the 4-th IAHR International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems",
  year="2011",
  number="1",
  pages="131--141",
  publisher="Faculty of Mechanical Engineering University of Belgrade",
  address="Belgrade",
  isbn="978-86-7083-740-9"
}