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A numerical analysis of cross-flow reinforced impingement cooling through a U-shaped turbulator and a roughened target plate

Brose, Nina and Brakmann, Robin and Carvalho, Francisco and Guarino, Roberto (2023) A numerical analysis of cross-flow reinforced impingement cooling through a U-shaped turbulator and a roughened target plate. International Gas Turbine Congress 2023, 2023-11-26 - 2023-12-01, Kyoto, Japan.

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Abstract

Efficient impingement cooling systems are crucial for turbomachinery applications. This study numerically explores eight different impingement cooling system geometries, focusing on the role of turbulators on both hole and target plates. RANS simulations and the DLR TRACE solver are utilized. On the hole plate a U-shaped turbulator (called ArcConic) uses the cross-flow to reinforce the jet by guiding it into the adjacent jet and thus increasing its effective jet Reynolds number. The target plate turbulators impact flow patterns, turbulence and surface area. Our findings show a moderate pressure drop and an 26% increase in heat flux. This research contributes valuable design insights for developing efficient impingement cooling systems and addresses the practicality of manufacturing these configurations using selective laser melting (SLM) technology.

Item URL in elib:https://elib.dlr.de/199432/
Document Type:Conference or Workshop Item (Speech)
Title:A numerical analysis of cross-flow reinforced impingement cooling through a U-shaped turbulator and a roughened target plate
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Brose, NinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brakmann, RobinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carvalho, FranciscoUNSPECIFIEDhttps://orcid.org/0000-0002-3069-8345UNSPECIFIED
Guarino, RobertoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:December 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Heat transfer, CFD, PIV, Impingement cooling, Prallkühlung, Turbine, Kühlung, cooling, internal cooling
Event Title:International Gas Turbine Congress 2023
Event Location:Kyoto, Japan
Event Type:international Conference
Event Start Date:26 November 2023
Event End Date:1 December 2023
Organizer:IGTC
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
Location: Göttingen
Institutes and Institutions:Institute of Propulsion Technology > Turbine
Deposited By: Brakmann, Robin
Deposited On:28 Nov 2023 13:35
Last Modified:24 Apr 2024 21:00

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