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Experimental Study of Impingement Effusion Cooled Double-Wall Combustor Liners: Aerodynamic Analysis with Stereo-PIV

Jackowski, Thomas 1; Elfner, Maximilian 1; Bauer, Hans-Jörg 1; Stichling, Katharina 1; Hahn, Marco 1
1 Institut für Thermische Strömungsmaschinen (ITS), Karlsruher Institut für Technologie (KIT)


A new experimental study is presented for a combustor with a double-wall cooling design. The inner wall at the hot gas side features effusion cooling with 7-7-7 laidback fan-shaped holes, and the outer wall at the cold side features an impingement hole pattern with circular holes. Data are acquired to asses the thermal and aerodynamic behavior of the setup, using a new, scaled up, engine similar test rig. Similarity includes Reynolds, Nusselt and Biot numbers for hot gas and coolant flow. Different geometrical setups are studied by varying the cavity height between the two walls and the relative alignment of the two hole patterns at two different impingement Reynolds numbers. This article focuses on the aerodynamic performance of the setup. Instationary flow data are acquired, using a high speed stereo PIV setup. For each geometrical configuration, approximately 20 planes are recorded with a data rate of 1000 Hz by traversing the flow region of interest in the cavity between the two specimen. This fine resolution allows the reconstruction of 3D flow fields for the mean data values and an extensive analysis of transient phenomena at each plane. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138274
Veröffentlicht am 29.09.2021
DOI: 10.3390/en14196191
Zitationen: 3
Web of Science
Zitationen: 1
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 28.09.2021
Sprache Englisch
Identifikator ISSN: 1996-1073
KITopen-ID: 1000138274
Erschienen in Energies
Verlag MDPI
Band 14
Heft 19
Seiten Art.-Nr.: 6191
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter combustor cooling; PIV; aerodynamics
Nachgewiesen in Scopus
Web of Science
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