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Wall Pressure Signatures of Turbulent Flow Over Longitudinal

Abdulbari, Hayder A. and Mahammed, Hassan D. and Zulkefli, Yaacob and Wafaa, Kamil Mahmood (2016) Wall Pressure Signatures of Turbulent Flow Over Longitudinal. In: MATEC Web of Conferences: International Conference on Measurement Instrumentation and Electronics (ICMIE 2016), 6-8 June 2016 , Munich, Germany. pp. 1-5., 75 (01007). ISSN 2261-236X

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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).

Item Type: Conference or Workshop Item (Speech)
Uncontrolled Keywords: Drag; Drops; Pressure drop; Reynolds number; Turbulence; Turbulent flow
Subjects: T Technology > TP Chemical technology
Faculty/Division: Centre of Excellence: Centre of Excellence for Advanced Research in Fluid Flow
Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 03 Apr 2017 05:57
Last Modified: 11 Jan 2018 05:43
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