An effective cooling of the gas turbine components subject to high thermal stresses is vital for the success of new engine and combustion concepts aiming at achieving further improvements in the energy conversion efficiency of the overall machine. The use of pulsating impinging jets — which enlarge vortex structures naturally occurring in the impinging jet flow when no pulsation is enforced — is a promising approach to develop a substantially more performant cooling system. To gain a deeper understanding of how the vortex system behaves under realistic conditions, researchers performed a DNS of a non-pulsating impinging jet flow with fully turbulent inflow conditions and compared its results with a reference case with a laminar inflow.
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Institut für Strömungsmechanik und Technische Akustik, Technische Universität Berlin
Computational & Scientific Engineering
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