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Phase-resolved evolution of transition and critical loci on a lifting hydrofoil in a propeller wake

Miozzi, Massimo and Dubbioso, Giulio and Muscari, Roberto and Costantini, Marco (2023) Phase-resolved evolution of transition and critical loci on a lifting hydrofoil in a propeller wake. In: Proceedings of the 34th Symposium on Naval Hydrodynamics (41), pp. 1-18. 34th Symposium on Naval Hydrodynamics, 26.06. - 01.07.2022, Washington, DC, USA. ISBN 979-8-218-12757-2.

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Official URL: https://web.seas.gwu.edu/snh34/


This contribution proposes details about the time and phase-averaged locations of laminar-turbulent transition, separation, and reattachment on a lifting NACA 0015 hydrofoil placed in a propeller wake following a domain decoupling approach, where pieces of information at the hydrofoil’s surface, supplied by experimental investigations, are supported and justified by numerical data in the flowfield, forced by the interaction with the upstream propeller. Measurements rely on time-resolved temperature maps at the wall provided by the luminescence of a Temperature Sensitive Paint applied on the hydrofoil. The maps of standard deviation and skewness obtained as averages in the time and phase domains illustrate the spatial distribution and the temporal evolution of the transition and critical loci. Numerical data about the flow field, coming from Detached Eddy Simulation, support the connections between the critical loci dynamics on the hydrofoil’s surface and the phase evolution of the pressure gradients imposed by the propeller to the incoming flow. The close connection between the time-resolved temperature maps and the skin friction exerted by the fluid on the surface allows for the detailed description of the boundary layer around the hydrofoil. Statistics of temperature’s time series supply a neat, non-redundant, and valuable information on laminar-turbulent transition, separation, and reattachment within and out of the propeller’s stream tube. This information appears as the natural complement of the time-resolved 3D flow maps obtained with the Detached Eddy Simulation numerical approach that, relieved of the difficulties inherent in the near-wall calculus, provides a fast and accurate description of the propeller’s wake.

Item URL in elib:https://elib.dlr.de/193926/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Paper No. 41., Published jointly by the U.S. Office of Naval Research and The George Washington University, January 2023, Co-Organized by: Office of Naval Research, Arlington, Virginia, USA The George Washington University, Washington D.C., USA
Title:Phase-resolved evolution of transition and critical loci on a lifting hydrofoil in a propeller wake
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Miozzi, MassimoUNSPECIFIEDhttps://orcid.org/0000-0002-6733-078XUNSPECIFIED
Costantini, MarcoUNSPECIFIEDhttps://orcid.org/0000-0003-0642-0199UNSPECIFIED
Date:January 2023
Journal or Publication Title:Proceedings of the 34th Symposium on Naval Hydrodynamics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-18
EditorsEmailEditor's ORCID iDORCID Put Code
Kim, Ki-HanU.S. Office of Naval Research (Retired)UNSPECIFIEDUNSPECIFIED
Bardet, PhilippeGeorg Washington UniversityUNSPECIFIEDUNSPECIFIED
Series Name:Conference Proceedings
Keywords:Transition; Separation; Reattachment; Temperature-Sensitive Paint; NACA0015
Event Title:34th Symposium on Naval Hydrodynamics
Event Location:Washington, DC, USA
Event Type:international Conference
Event Dates:26.06. - 01.07.2022
Organizer:The George Washington University
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Micknaus, Ilka
Deposited On:11 Apr 2023 13:54
Last Modified:19 Apr 2023 14:56

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