POD-based suppression of the turbulence onset in a pipe

Basheer A. Khan, Shaul Evron, Shay Tor, Alexander Yakhot

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Direct numerical simulations (DNS) in pipe flow are performed to suppress the turbulence by modifying different components of fluctuations. To modify the fluctuation level, the proper orthogonal decomposition (POD) is employed, which enables reconstructing the desired number of modes of any fluctuating components. The peculiar aspect of this one-time alteration of the velocity field is that neither the velocity profile nor the inflection points were altered. We noticed that turbulence was sustained even by the first two POD azimuth modes, which contributed 17% to the total azimuth energy. On the other hand, eliminating all the radial POD modes did not prevent the onset of turbulence.

Original languageEnglish
Title of host publication10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023
PublisherBegell House Inc.
ISBN (Electronic)9781567005349
StatePublished - 1 Jan 2023
Event10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023 - Rome, Italy
Duration: 11 Sep 202315 Sep 2023

Publication series

NameProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
ISSN (Electronic)2377-2816

Conference

Conference10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023
Country/TerritoryItaly
CityRome
Period11/09/2315/09/23

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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