Wall pressure signatures of turbulent flow over longitudinal
Five triangular riblets longitudinal in the streamwise direction have been studied experimentally. The riblets have pick to pick spaced (s) equal to 1000 μm and with groove height to space ratio (h/s) 0.4, 0.6, 0.8 and 1. The tests were conducted in a full turbulence water channel on a flat plate fo...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2016-01-01
|
Series: | MATEC Web of Conferences |
Online Access: | http://dx.doi.org/10.1051/matecconf/20167501007 |
id |
doaj-5ab646fc7ffd4bbaaef26b85d30dd313 |
---|---|
record_format |
Article |
spelling |
doaj-5ab646fc7ffd4bbaaef26b85d30dd3132021-02-02T00:34:06ZengEDP SciencesMATEC Web of Conferences2261-236X2016-01-01750100710.1051/matecconf/20167501007matecconf_icmie2016_01007Wall pressure signatures of turbulent flow over longitudinalAbdulbari Hayder A.Mahammed Hassan D.0Yaacob Zulkefli B.1Mahmood Wafaa K.2Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia PahangFaculty of Chemical and Natural Resources Engineering, Universiti Malaysia PahangCenter of Excellence for Advanced Research in Fluid Flow, Universiti Malaysia PahangFive triangular riblets longitudinal in the streamwise direction have been studied experimentally. The riblets have pick to pick spaced (s) equal to 1000 μm and with groove height to space ratio (h/s) 0.4, 0.6, 0.8 and 1. The tests were conducted in a full turbulence water channel on a flat plate for Reynolds numbers 13000 to 53000 based on channel hydraulic diameter. Pressure drop was measured using pressure transmitter gauge with pressure tap points of 12.7 mm in diameter were provided at the bottom of the channel. The main purpose of the present study is to investigate the response of turbulent flow to longitudinal grooves of triangular shaped riblets and compare the effect of the turbulence structure over smoothed and grooved surfaces with pressure drop measurements. 10.20 was the maximum drag reduction appear at h/s equal to (1).http://dx.doi.org/10.1051/matecconf/20167501007 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdulbari Hayder A. Mahammed Hassan D. Yaacob Zulkefli B. Mahmood Wafaa K. |
spellingShingle |
Abdulbari Hayder A. Mahammed Hassan D. Yaacob Zulkefli B. Mahmood Wafaa K. Wall pressure signatures of turbulent flow over longitudinal MATEC Web of Conferences |
author_facet |
Abdulbari Hayder A. Mahammed Hassan D. Yaacob Zulkefli B. Mahmood Wafaa K. |
author_sort |
Abdulbari Hayder A. |
title |
Wall pressure signatures of turbulent flow over longitudinal |
title_short |
Wall pressure signatures of turbulent flow over longitudinal |
title_full |
Wall pressure signatures of turbulent flow over longitudinal |
title_fullStr |
Wall pressure signatures of turbulent flow over longitudinal |
title_full_unstemmed |
Wall pressure signatures of turbulent flow over longitudinal |
title_sort |
wall pressure signatures of turbulent flow over longitudinal |
publisher |
EDP Sciences |
series |
MATEC Web of Conferences |
issn |
2261-236X |
publishDate |
2016-01-01 |
description |
Five triangular riblets longitudinal in the streamwise direction have been studied experimentally. The riblets have pick to pick spaced (s) equal to 1000 μm and with groove height to space ratio (h/s) 0.4, 0.6, 0.8 and 1. The tests were conducted in a full turbulence water channel on a flat plate for Reynolds numbers 13000 to 53000 based on channel hydraulic diameter. Pressure drop was measured using pressure transmitter gauge with pressure tap points of 12.7 mm in diameter were provided at the bottom of the channel. The main purpose of the present study is to investigate the response of turbulent flow to longitudinal grooves of triangular shaped riblets and compare the effect of the turbulence structure over smoothed and grooved surfaces with pressure drop measurements. 10.20 was the maximum drag reduction appear at h/s equal to (1). |
url |
http://dx.doi.org/10.1051/matecconf/20167501007 |
work_keys_str_mv |
AT abdulbarihaydera wallpressuresignaturesofturbulentflowoverlongitudinal AT mahammedhassand wallpressuresignaturesofturbulentflowoverlongitudinal AT yaacobzulkeflib wallpressuresignaturesofturbulentflowoverlongitudinal AT mahmoodwafaak wallpressuresignaturesofturbulentflowoverlongitudinal |
_version_ |
1724313611228151808 |