表紙画像

Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique

The Proper orthogonal decomposition (POD) method has seen increasingly used in the last two decades and has a lot of applications for the comparison of experimental and numerically simulated data. The POD technique is often used to extract information about coherent structures dominating the flow. T...

詳細記述

保存先:
書誌詳細
主要な著者: Munir, S., Siddiqui, M.I., Heikal, M., Abdul Aziz, A.R., de Sercey, G.
フォーマット: 論文
出版事項: Korean Society of Mechanical Engineers 2015
オンライン･アクセス:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948771273&doi=10.1007%2fs12206-015-1017-x&partnerID=40&md5=91996e8bd0fb76a3531b7c5159559d58
http://eprints.utp.edu.my/31664/
タグ: タグ追加
タグなし, このレコードへの初めてのタグを付けませんか!
id my.utp.eprints.31664
record_format eprints
spelling my.utp.eprints.316642022-03-26T03:25:31Z Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique Munir, S. Siddiqui, M.I. Heikal, M. Abdul Aziz, A.R. de Sercey, G. The Proper orthogonal decomposition (POD) method has seen increasingly used in the last two decades and has a lot of applications for the comparison of experimental and numerically simulated data. The POD technique is often used to extract information about coherent structures dominating the flow. The two-dimensional and two-component instantaneous velocity fields of both liquid and gas phases of a slug flow were obtained by Particle image velocimetry (PIV) combined with Laser induced fluorescence (LIF). POD was applied to the velocity fields of both phases separately to identify the coherent flow structures. We focused on POD eigenmodes and their corresponding energy contents of both liquid and gas phases. The sum of first few eigenmodes that contain maximum turbulent kinetic energy of the flow represents the coherent structures. In the case of liquid phase the first eigenmode contained 42 of the total energy, while in the gas phase the decaying energy distribution was flat. The POD results showed that the coefficient of mode 1 for the liquid phase oscillated between positive and negative values and had the highest amplitude. For the visualization of coherent motion different linear combinations of eigenmodes for liquid and gas phases were used. The phenomena of turbulent bursting events associated with Q2 events (low momentum fluid moving away from the wall) and Q4 events (high momentum flow moving towards the wall) were also discussed to assess its contribution in turbulence production © 2015, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg. Korean Society of Mechanical Engineers 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948771273&doi=10.1007%2fs12206-015-1017-x&partnerID=40&md5=91996e8bd0fb76a3531b7c5159559d58 Munir, S. and Siddiqui, M.I. and Heikal, M. and Abdul Aziz, A.R. and de Sercey, G. (2015) Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique. Journal of Mechanical Science and Technology, 29 (11). pp. 4701-4710. http://eprints.utp.edu.my/31664/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The Proper orthogonal decomposition (POD) method has seen increasingly used in the last two decades and has a lot of applications for the comparison of experimental and numerically simulated data. The POD technique is often used to extract information about coherent structures dominating the flow. The two-dimensional and two-component instantaneous velocity fields of both liquid and gas phases of a slug flow were obtained by Particle image velocimetry (PIV) combined with Laser induced fluorescence (LIF). POD was applied to the velocity fields of both phases separately to identify the coherent flow structures. We focused on POD eigenmodes and their corresponding energy contents of both liquid and gas phases. The sum of first few eigenmodes that contain maximum turbulent kinetic energy of the flow represents the coherent structures. In the case of liquid phase the first eigenmode contained 42 of the total energy, while in the gas phase the decaying energy distribution was flat. The POD results showed that the coefficient of mode 1 for the liquid phase oscillated between positive and negative values and had the highest amplitude. For the visualization of coherent motion different linear combinations of eigenmodes for liquid and gas phases were used. The phenomena of turbulent bursting events associated with Q2 events (low momentum fluid moving away from the wall) and Q4 events (high momentum flow moving towards the wall) were also discussed to assess its contribution in turbulence production © 2015, The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.
format Article
author Munir, S.
Siddiqui, M.I.
Heikal, M.
Abdul Aziz, A.R.
de Sercey, G.
spellingShingle Munir, S.
Siddiqui, M.I.
Heikal, M.
Abdul Aziz, A.R.
de Sercey, G.
Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
author_facet Munir, S.
Siddiqui, M.I.
Heikal, M.
Abdul Aziz, A.R.
de Sercey, G.
author_sort Munir, S.
title Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
title_short Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
title_full Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
title_fullStr Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
title_full_unstemmed Identification of dominant structures and their flow dynamics in the turbulent two-phase flow using POD technique
title_sort identification of dominant structures and their flow dynamics in the turbulent two-phase flow using pod technique
publisher Korean Society of Mechanical Engineers
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948771273&doi=10.1007%2fs12206-015-1017-x&partnerID=40&md5=91996e8bd0fb76a3531b7c5159559d58
http://eprints.utp.edu.my/31664/
_version_ 1738657279129944064
score 13.251813

類似資料