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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. ASME Journal of Turbomachinery. American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4070347. ISSN 0889-504X.

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Official URL: URL: https://asmedigitalcollection.asme.org/turbomachinery/article/doi/10.1115/1.4070347/1226473/FLUIDIC-OSCILLATORS-IN-IMPINGEMENT-JET-COOLING-A

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/220728/
Document Type:Article
Title:FLUIDIC OSCILLATORS IN IMPINGEMENT JET COOLING: A NOVEL CONFIGURATION FOR REALIZING SWEEPING JETS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Brakmann, RobinRobin.Brakmann (at) dlr.dehttps://orcid.org/0000-0003-3598-0742200120938
Carvalho, FranciscoFrancisco.Carvalho (at) dlr.dehttps://orcid.org/0000-0002-3069-8345200120939
Matha, Marcelmarcel.matha (at) dlr.dehttps://orcid.org/0000-0001-8101-7303UNSPECIFIED
Morsbach, ChristianChristian.Morsbach (at) dlr.dehttps://orcid.org/0000-0002-6254-6979UNSPECIFIED
Pain, CamilleUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pellé, JulienUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rairoux, Emilieemilie.rairoux (at) dlr.deUNSPECIFIEDUNSPECIFIED
Schroll, MichaelMichael.Schroll (at) dlr.dehttps://orcid.org/0000-0003-0736-546XUNSPECIFIED
Techen, ErikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Willert, ChristianChris.Willert (at) dlr.dehttps://orcid.org/0000-0002-1668-0181UNSPECIFIED
Date:6 November 2025
Journal or Publication Title:ASME Journal of Turbomachinery
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1115/1.4070347
Publisher:American Society of Mechanical Engineers (ASME)
ISSN:0889-504X
Status:Published
Keywords:Impingement; Fluidic; Turbine; Cooling; Sweeping jets
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 13:03
Last Modified:18 Dec 2025 11:29

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