FLUIDIC OSCILLATORS IN IMPINGEMENT JET COOLING: A NOVEL CONFIGURATION FOR REALIZING SWEEPING JETS

Brakmann, Robin and Carvalho, Francisco and Matha, Marcel and Morsbach, Christian and Pain, Camille and Pellé, Julien and Rairoux, Emilie and Schroll, Michael and Techen, Erik and Willert, Christian (2025) FLUIDIC OSCILLATORS IN IMPINGEMENT JET COOLING: A NOVEL CONFIGURATION FOR REALIZING SWEEPING JETS. In: 70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025. Proceedings of ASME Turbo Expo 2025 Turbomachinery Technical Conference and Exposition GT2025, 2025-06-16 - 2025-06-20, Memphis, Tennessee, United States of America. doi: 10.1115/GT2025-152415. ISBN 978-079188887-2.

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Official URL: https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2025/88827/V006T15A007/1220454

Abstract

This work investigates a multi-jet impingement cooling configuration for turbomachinery that integrates passive fluidic oscillators to generate sweeping jets under self-induced crossflow. URANS simulations with DLR’s TRACE solver are combined with high-speed PIV and POD-based analyses to characterize the unsteady jet dynamics and cooling uniformity. Results indicate that an oscillator placed on the hole plate can stabilize downstream jets without degrading overall heat transfer, while a target-plate placement does not provide comparable benefits.

Item URL in elib:

https://elib.dlr.de/220722/

Document Type:

Conference or Workshop Item (Speech)

Title:

FLUIDIC OSCILLATORS IN IMPINGEMENT JET COOLING: A NOVEL CONFIGURATION FOR REALIZING SWEEPING JETS

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Brakmann, Robin	Robin.Brakmann (at) dlr.de	https://orcid.org/0000-0003-3598-0742	199889991
Carvalho, Francisco	Francisco.Carvalho (at) dlr.de	https://orcid.org/0000-0002-3069-8345	199889992
Matha, Marcel	marcel.matha (at) dlr.de	https://orcid.org/0000-0001-8101-7303	UNSPECIFIED
Morsbach, Christian	Christian.Morsbach (at) dlr.de	https://orcid.org/0000-0002-6254-6979	UNSPECIFIED
Pain, Camille	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Pellé, Julien	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Rairoux, Emilie	emilie.rairoux (at) dlr.de	UNSPECIFIED	UNSPECIFIED
Schroll, Michael	Michael.Schroll (at) dlr.de	https://orcid.org/0000-0003-0736-546X	UNSPECIFIED
Techen, Erik	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Willert, Christian	Chris.Willert (at) dlr.de	https://orcid.org/0000-0002-1668-0181	UNSPECIFIED

Date:

June 2025

Journal or Publication Title:

70th ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, GT 2025

Refereed publication:

Yes

Open Access:

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

DOI:

10.1115/GT2025-152415

ISBN:

978-079188887-2

Status:

Published

Keywords:

Impingement; Fluidic; Turbine; Cooling; Sweeping jets

Event Title:

Proceedings of ASME Turbo Expo 2025 Turbomachinery Technical Conference and Exposition GT2025

Event Location:

Memphis, Tennessee, United States of America

Event Type:

international Conference

Event Start Date:

16 June 2025

Event End Date:

20 June 2025

Organizer:

ASME

HGF - Research field:

Energy

HGF - Program:

Materials and Technologies for the Energy Transition

HGF - Program Themes:

High-Temperature Thermal Technologies

DLR - Research area:

Energy

DLR - Program:

E VS - Combustion Systems

DLR - Research theme (Project):

E - Combustion and Power Plant Systems, E - Gas Turbine

Location:

Göttingen , Köln-Porz

Institutes and Institutions:

Institute of Propulsion Technology > Turbine
Institute of Propulsion Technology > Numerical Methodes
Institute of Propulsion Technology > Engine Measurement Systems

Deposited By:

Brakmann, Robin

Deposited On:

16 Dec 2025 12:57

Last Modified:

18 Dec 2025 11:26

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