Characteristics of flow patterns under pulsatile flow with same oscillatory fraction in the grooved channel

Journal Article

Title: Characteristics of flow patterns under pulsatile flow with same oscillatory fraction in the grooved channel

Author:

Yang, Y.; Bian, Y.; Arima, H.; Ikegami, Y.

Publication Date:

December 25, 2020

Journal:

Journal of OTEC

Volume:

Pages:

21-28

Publisher:

Institute of Ocean Energy, Saga University (IOES)

Affiliation:

Dalian University of Technology, Saga University

Technology:

OTEC

Collection Method:

Lab Data

Engineering:

Hydrodynamics, Performance

Document Access

Website:

External Link

Attachment:

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Notice: This material may be protected by Copyright Law.

Citation

Yang, Y.; Bian, Y.; Arima, H.; Ikegami, Y. (2020). Characteristics of flow patterns under pulsatile flow with same oscillatory fraction in the grooved channel. Journal of OTEC, 25, 21-28.

@article{Yang-2020-22728,
author = {Yang, Y and Bian, Y and Arima, H and Ikegami, Y},
title = {Characteristics of flow patterns under pulsatile flow with same oscillatory fraction in the grooved channel},
journal = {Journal of OTEC},
year = {2020},
month = {dec},
publisher = {Institute of Ocean Energy, Saga University (IOES)},
volume = {25},
pages = {21--28},
url = {https://www.ioes.saga-u.ac.jp/en/publication/journal-otec-1},
keywords = {OTEC, Lab Data, Hydrodynamics, Performance},
}

Export Citation to BibTex

TY - JOUR
TI - Characteristics of flow patterns under pulsatile flow with same oscillatory fraction in the grooved channel
AU - Yang, Y
AU - Bian, Y
AU - Arima, H
AU - Ikegami, Y
T2 - Journal of OTEC
AB - The characteristics of flow structure under pulsatile flow with same oscillatory fraction in the grooved channel are investigated experimentally. The flow patterns under pulsatile flow in the grooved channel are divided into 4kinds in this study. The effects of frequency, groove length and t/T on the flow patterns are analyzed. The results showed that the instability of the flow enhances with t/T during the deceleration phase. As the frequency increases, the onset of the unstable flow state is postponed, but the strongly unstable state (3) starts to appear and advance gradually. Moreover, the onset of the unstable state gradually advances as the increase of groove length.
DA - 2020/12//
PY - 2020
PB - Institute of Ocean Energy, Saga University (IOES)
VL - 25
SP - 21
EP - 28
UR - https://www.ioes.saga-u.ac.jp/en/publication/journal-otec-1
LA - English
KW - OTEC
KW - Lab Data
KW - Hydrodynamics
KW - Performance
ER -

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Abstract

The characteristics of flow structure under pulsatile flow with same oscillatory fraction in the grooved channel are investigated experimentally. The flow patterns under pulsatile flow in the grooved channel are divided into 4kinds in this study. The effects of frequency, groove length and t/T on the flow patterns are analyzed. The results showed that the instability of the flow enhances with t/T during the deceleration phase. As the frequency increases, the onset of the unstable flow state is postponed, but the strongly unstable state (3) starts to appear and advance gradually. Moreover, the onset of the unstable state gradually advances as the increase of groove length.