2023
DOI: 10.3390/aerospace10070641
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Active Flow Control for Passage Vortex Reduction in a Linear Turbine Cascade with Various Tip Clearance Sizes Using a Dielectric Barrier Discharge Plasma Actuator

Abstract: In an axial-flow turbine of a jet engine used for aircraft propulsion, the passage vortex (PV) and tip leakage vortex (TLV) generated inside the blade passage deteriorate the aerodynamic performance. In this study, a dielectric barrier discharge plasma actuator (PA) was installed in the upstream endwall of the turbine cascade to suppress the PV. The effects of the presence or absence of tip clearance and the change in the size of the tip clearance on the vortex structure at the exit of the turbine cascade were… Show more

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Cited by 2 publications
(5 citation statements)
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“…This method can be used in the future to study the effects of individual vortical structures on cascade performance. Presently, many works focus on flow control with the goal of suppressing end-wall flow effects, see e.g [16]. In such cases, this presented approach can provide a useful tool to evaluate the impact of flow control on individual vortices.…”
Section: Note On the Flow Field Division Into Different Regionsmentioning
confidence: 99%
“…This method can be used in the future to study the effects of individual vortical structures on cascade performance. Presently, many works focus on flow control with the goal of suppressing end-wall flow effects, see e.g [16]. In such cases, this presented approach can provide a useful tool to evaluate the impact of flow control on individual vortices.…”
Section: Note On the Flow Field Division Into Different Regionsmentioning
confidence: 99%
“…This blade geometry reproduced the hub shape of the annular axial-flow turbine rotor blades designed by the first author of this paper [36]. The two-dimensional blade coordinates are described in the Appendix in [16]. In this experiment, the rotational speed of the wind tunnel blower was varied between 113 and 1125 Hz.…”
Section: Linear Turbine Cascade (Ltc)mentioning
confidence: 99%
“…Figure 5 displays a photograph of the PA along with its cross-sectional structure. In particular, Figure 5a provides a depiction of the axial PA employed in previous studies [15,16], while Figure 5b shows the newly prepared slanted PA used in this experiment. Both PAs were built using a printed circuit board (PCB) process.…”
Section: Plasma Actuator (Pa)mentioning
confidence: 99%
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