An experimental study on laminar-turbulent transition in a pulsating pipe flow

Hong Sen Lo, Jiun-Jih Miau

Research output: Contribution to journalArticle

Abstract

Experiments were made to study the process of laminar-turbulent transition in the developing region of a pulsating pipe flow. Particular interest was placed upon the initial growth of velocity fluctuations near the pipe wall. Shown by the hot-wire velocity signals measured and the output signals of the MEMS thermal film sensors flushed with the wall surface, the initial disturbances appeared intermittently like a packet of waves in every cycle of pulsation. The characteristics of the disturbances were further analyzed with the Hilbert-Huang Transformation (HHT), from which the characteristic frequency could be identified quantitatively. The results obtained provide valuable information relevant to understanding the initial laminar-turbulent transition in a pulsating pipe flow.

Original languageEnglish
Pages (from-to)17-25
Number of pages9
JournalJournal of Aeronautics, Astronautics and Aviation
Volume43
Issue number1
Publication statusPublished - 2011 Jan 1

Fingerprint

laminar-turbulent transition
pipe flow
Pipe flow
disturbances
experimental study
Hilbert transformation
disturbance
microelectromechanical systems
MEMS
pipe
Pipe
wire
Wire
sensor
cycles
output
sensors
Sensors
experiment
Experiments

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

@article{f0ca9946ecef4c5590c0e7ef23c9a08b,
title = "An experimental study on laminar-turbulent transition in a pulsating pipe flow",
abstract = "Experiments were made to study the process of laminar-turbulent transition in the developing region of a pulsating pipe flow. Particular interest was placed upon the initial growth of velocity fluctuations near the pipe wall. Shown by the hot-wire velocity signals measured and the output signals of the MEMS thermal film sensors flushed with the wall surface, the initial disturbances appeared intermittently like a packet of waves in every cycle of pulsation. The characteristics of the disturbances were further analyzed with the Hilbert-Huang Transformation (HHT), from which the characteristic frequency could be identified quantitatively. The results obtained provide valuable information relevant to understanding the initial laminar-turbulent transition in a pulsating pipe flow.",
author = "Lo, {Hong Sen} and Jiun-Jih Miau",
year = "2011",
month = "1",
day = "1",
language = "English",
volume = "43",
pages = "17--25",
journal = "Journal of Aeronautics, Astronautics and Aviation, Series A",
issn = "1990-7710",
publisher = "The Aeronautical and Astronautical Society of the Republic of China",
number = "1",

}

An experimental study on laminar-turbulent transition in a pulsating pipe flow. / Lo, Hong Sen; Miau, Jiun-Jih.

In: Journal of Aeronautics, Astronautics and Aviation, Vol. 43, No. 1, 01.01.2011, p. 17-25.

Research output: Contribution to journalArticle

TY - JOUR

T1 - An experimental study on laminar-turbulent transition in a pulsating pipe flow

AU - Lo, Hong Sen

AU - Miau, Jiun-Jih

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Experiments were made to study the process of laminar-turbulent transition in the developing region of a pulsating pipe flow. Particular interest was placed upon the initial growth of velocity fluctuations near the pipe wall. Shown by the hot-wire velocity signals measured and the output signals of the MEMS thermal film sensors flushed with the wall surface, the initial disturbances appeared intermittently like a packet of waves in every cycle of pulsation. The characteristics of the disturbances were further analyzed with the Hilbert-Huang Transformation (HHT), from which the characteristic frequency could be identified quantitatively. The results obtained provide valuable information relevant to understanding the initial laminar-turbulent transition in a pulsating pipe flow.

AB - Experiments were made to study the process of laminar-turbulent transition in the developing region of a pulsating pipe flow. Particular interest was placed upon the initial growth of velocity fluctuations near the pipe wall. Shown by the hot-wire velocity signals measured and the output signals of the MEMS thermal film sensors flushed with the wall surface, the initial disturbances appeared intermittently like a packet of waves in every cycle of pulsation. The characteristics of the disturbances were further analyzed with the Hilbert-Huang Transformation (HHT), from which the characteristic frequency could be identified quantitatively. The results obtained provide valuable information relevant to understanding the initial laminar-turbulent transition in a pulsating pipe flow.

UR - http://www.scopus.com/inward/record.url?scp=79958019894&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79958019894&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:79958019894

VL - 43

SP - 17

EP - 25

JO - Journal of Aeronautics, Astronautics and Aviation, Series A

JF - Journal of Aeronautics, Astronautics and Aviation, Series A

SN - 1990-7710

IS - 1

ER -