Experimental and numerical investigation on a fully developed turbulent pipe flow over a semicircle orifice

S. Okuda, C. H. Lepeut, M. Rasti, T. Kawata, S. Obi

Research output: Contribution to journalConference article

Abstract

The internal separated flow associated with remarkable mean secondary flow is investigated both experimentally and computationally. The computational investigation indicates that the commercially available RANS model group and LES provide obvious difference in terms of the prediction of the flow reattachment and recovery. On the other hand, some over-proportional magnitude of the velocity fluctuation across the mean flow direction is found by velocity measurement by stereo PIV. The recirculation region in either side of the orifice seems to be the source of the streamwise vortex that governs the development of the flow near the flow reattachment point. The considered flow serves as a useful test case for both RANS modeling and LES.

Original languageEnglish
Pages (from-to)2504-2512
Number of pages9
JournalProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Volume2012-September
DOIs
Publication statusPublished - 2012 Jan 1
Event7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012 - Palermo, Italy
Duration: 2012 Sep 242012 Sep 27

Fingerprint

Secondary flow
Pipe flow
Orifices
Velocity measurement
Vortex flow
Recovery
Direction compound

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Experimental and numerical investigation on a fully developed turbulent pipe flow over a semicircle orifice. / Okuda, S.; Lepeut, C. H.; Rasti, M.; Kawata, T.; Obi, S.

In: Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer, Vol. 2012-September, 01.01.2012, p. 2504-2512.

Research output: Contribution to journalConference article

@article{21fe50d255734373ba695b2fa113ffdb,
title = "Experimental and numerical investigation on a fully developed turbulent pipe flow over a semicircle orifice",
abstract = "The internal separated flow associated with remarkable mean secondary flow is investigated both experimentally and computationally. The computational investigation indicates that the commercially available RANS model group and LES provide obvious difference in terms of the prediction of the flow reattachment and recovery. On the other hand, some over-proportional magnitude of the velocity fluctuation across the mean flow direction is found by velocity measurement by stereo PIV. The recirculation region in either side of the orifice seems to be the source of the streamwise vortex that governs the development of the flow near the flow reattachment point. The considered flow serves as a useful test case for both RANS modeling and LES.",
author = "S. Okuda and Lepeut, {C. H.} and M. Rasti and T. Kawata and S. Obi",
year = "2012",
month = "1",
day = "1",
doi = "10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2590",
language = "English",
volume = "2012-September",
pages = "2504--2512",
journal = "Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer",
issn = "2377-2816",

}

TY - JOUR

T1 - Experimental and numerical investigation on a fully developed turbulent pipe flow over a semicircle orifice

AU - Okuda, S.

AU - Lepeut, C. H.

AU - Rasti, M.

AU - Kawata, T.

AU - Obi, S.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The internal separated flow associated with remarkable mean secondary flow is investigated both experimentally and computationally. The computational investigation indicates that the commercially available RANS model group and LES provide obvious difference in terms of the prediction of the flow reattachment and recovery. On the other hand, some over-proportional magnitude of the velocity fluctuation across the mean flow direction is found by velocity measurement by stereo PIV. The recirculation region in either side of the orifice seems to be the source of the streamwise vortex that governs the development of the flow near the flow reattachment point. The considered flow serves as a useful test case for both RANS modeling and LES.

AB - The internal separated flow associated with remarkable mean secondary flow is investigated both experimentally and computationally. The computational investigation indicates that the commercially available RANS model group and LES provide obvious difference in terms of the prediction of the flow reattachment and recovery. On the other hand, some over-proportional magnitude of the velocity fluctuation across the mean flow direction is found by velocity measurement by stereo PIV. The recirculation region in either side of the orifice seems to be the source of the streamwise vortex that governs the development of the flow near the flow reattachment point. The considered flow serves as a useful test case for both RANS modeling and LES.

UR - http://www.scopus.com/inward/record.url?scp=85073485431&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85073485431&partnerID=8YFLogxK

U2 - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2590

DO - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2590

M3 - Conference article

AN - SCOPUS:85073485431

VL - 2012-September

SP - 2504

EP - 2512

JO - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer

JF - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer

SN - 2377-2816

ER -