Flow over macroscopic hexagonal structured surfaces. Experimental Investigation

Language: English

Published by GRIN Verlag, 2022

3346610152 / 9783346610157

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Seller: AHA-BUCH GmbH, Einbeck, GermanyAHA-BUCH GmbH

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Druck auf Anfrage Neuware - Printed after ordering - Doctoral Thesis / Dissertation from the year 2014 in the subject Engineering - Mechanical Engineering, grade: 1,3, Brandenburg Technical University Cottbus, language: English, abstract: The flow over macroscopic patterned/structured surfaces was investigated in a subsonic wind tunnel over Reynolds numbers ranging from 3.14 x 104 to 2.77 x 105 for cylinders and from 5.34 x 105 to 11.27 x 106 for plates. The investigations were accomplished by measuring local and global drag, velocity profiles and by visualization of the flow above the surface. Flow visualization was carried out by using oil-film technique and velocity profile measurements to elucidate the observed effect, and hence present the mechanism responsible for theobserved drag reduction. Investigations on structured plates were performed with the help of hot wire anemometry and oil film interferometry. The main concern of the experiments on structured plates was to examine the effect of hexagonal structures on local and global drag of a structured plate. It was accomplished by determining and analyzing the boundary layer quantities like shear stress velocities, shear stress coefficients and momentum thicknesses over a selected Reynolds number range and various locations in streamwise direction. Finally, a number of configurations of a wind turbine made of smooth and structured blades were investigated to compare their efficiencies at various flow velocities.…

Seller Inventory # 9783346610157

Title
Flow over macroscopic hexagonal structured surfaces. Experimental Investigation
Author
Mohammad Usman Butt
Publisher
GRIN Verlag
Publication year
2022
Condition
Neu
Binding
Taschenbuch
Language
English
ISBN 10
3346610152
ISBN 13
9783346610157
Item weight
169 grams
Dimensions
210x148x8 mm

AHA-BUCH GmbH

Einbeck, Germany

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