Experimental investigation of compliant coatings in turbulent boundary layers in air

Master thesis (2021)

Authors

O. Solergibert I Travé Aerospace Engineering

Contributors

F.F.J. Schrijer Aerodynamics - Aerospace Engineering (mentor)

M. van Nesselrooij Dimple Aerospace B.V. (graduation committee member)

B.W. van Oudheusden Aerodynamics - Aerospace Engineering (mentor)

Faculty

Aerospace Engineering, Aerospace Engineering

Coating PIV Aerodynamic Experimental aerodynamics Compliant Compliant surface Free surface measurement

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http://resolver.tudelft.nl/uuid:350ecf5e-be08-4313-8cf6-4637e54d6294

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Published Date

30-08-2021

Language

English

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Faculty

Aerospace Engineering

Abstract

Inspired by the dolphin skin, compliant coatings have been researched as a passive flow control solution to reduce drag. Both successful and drag-increasing experiments can be found in the literature. However, the mechanism is not well understood neither the combination of surface properties and flow conditions that yield a drag reduction. At Dimple Aerospace, the aim was to find the optimal space of coating properties and flow conditions that yield a drag reduction. To this end, a series of compliant coatings with varying stiffness have been drag-tested. On the softer coatings that altered the flow back, the surface deformation is characterised by the FS-SS technique. Finally, PIV is performed to observe the effect of the coating deformation in the flow.

Files

Report.pdf

(pdf | 165 Mb)

- Embargo expired in 30-08-2023