Underlying mechanisms of propeller wake interaction with a wing

Felli, Mario

doi:10.1017/jfm.2020.792

Cited by 49 publications

(9 citation statements)

References 64 publications

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“…Second, the airframe induces a nonuniform inflow to the propeller, which affects the propeller forces and thus their contribution to the moments. Finally, the (sheared) propeller slipstream introduces sidewash on the aft-fuselage and vertical tailplane [45,50,88]. An overview of these installation effects on aircraft level is depicted in Fig.…”

Section: Directional Stability and Trimmentioning

confidence: 99%

Aerodynamic Performance and Static Stability Characteristics of Aircraft with Tail-Mounted Propellers

Arnhem

Vries

Sinnige

et al. 2022

Journal of Aircraft

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Section: Directional Stability and Trimmentioning

confidence: 99%

Aerodynamic Performance and Static Stability Characteristics of Aircraft with Tail-Mounted Propellers

Arnhem

Vries

Sinnige

et al. 2022

Journal of Aircraft

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“…Felli (2021), Muscari et al (2017) and Posa et al (2020), among the others). The manifolds T and W impact almost orthogonally (≈ 105 • , see Felli (2021)) to the mean plane as a tubular vortex and a vortex sheet, respectively. The manifold H travels in the mean plane of the hydrofoil model, perpendicularly to its leading edge (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…It is worth mentioning that while the first class of events, whose related manifolds rise on the propeller and develop in the wake, are well described in the scientific and technical literature on this subject (see e.g. Muscari et al (2017) and Felli (2021) and references within), the second class, involving flow separation, transition, and reattachment on the hydrofoil surface, are here reported for the first time in the context of fluid dynamic interaction between a rotor wake and a hydrofoil. Despite their energetic impact on the flow topology at the wall, in particular at lifting conditions, both numerical and experimental reports lack in considering them in detail, likely because of the difficulties in resolving the small spatial and temporal scales involved in flow separation, transition, and reattachment, with the additional complexity introduced by the spatial non-uniformity induced by the propeller spin.…”

Section: Introductionmentioning

confidence: 99%

“…On the propeller side, two helical manifolds detach from each blade tip (T) and trailing edge (W) and a longitudinal, streamwise-oriented one originating at the hub (H) (see e.g. Felli (2021), Muscari et al (2017) and Posa et al (2020), among the others). The manifolds T and W impact almost orthogonally (≈ 105 • , see Felli (2021)) to the mean plane as a tubular vortex and a vortex sheet, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Temperature and skin-friction maps on a lifting hydrofoil in a propeller wake

Miozzi

Costantini

2021

Meas. Sci. Technol.

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There are at least two direct links between the friction acting on the surface of a (slightly warmer or colder) body under the influence of an incompressible flow and the temperature distribution on the surface of the body itself. The first relies on the energy equation, which connects the evolution of the temperature distribution at the wall to the action of the skin-friction field. On the other hand, the equation of passive transport of temperature perturbations at the wall unveils a direct relationship between the celerity of propagation of thermal blobs and the friction velocity. Grounding on these relationships, this paper reports about the application of different methodologies, developed to determine skin-friction fields from surface temperature maps, to the analysis of the complex flow evolution on a lifting NACA 0015 hydrofoil immersed in a non-uniform, unsteady wake induced by a marine propeller. The adopted temperature-sensitive paint technique allows obtaining the global temperature data with the appropriate, high resolution in space and time. The approach based on the energy equation leads to an unconventional, single-snapshots optical-flow-like methodology, which allows obtaining time-resolved, relative skin-friction fields. The two approaches based on the displacement of the wall temperature perturbations enable the determination of time-and phase-averaged, quantitative skin-friction fields. One approach grounds on a classical tracking of the thermal disturbances via optical flow, the other one relies on minimizing the discrepancy between the celerity of propagation of thermal fluctuations and the behavior expected according to the Taylor hypothesis. The analysis of the skin-friction fields obtained via the three uncorrelated, complementary approaches discloses the evolution and the mutual interaction of different flow structures (manifolds) over the hydrofoil surface at lifting and zero-lift conditions: the hub and tip vortices, the blade wake, the laminar separation bubble, and the separation at trailing edge.

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“…According to the definitions provided in the literature (Muscari, Dubbioso & Di Mascio 2017 a ; Felli 2021), the interaction of the vortical structure with the rudder can be ideally distinguished in two different phases: the collision of the vortex structure with the wall, and the downstream convection (travelling phase). The first process gives onset to the strongest loading and pressure variations, ascribed to the progressive penetration of the leading edge in the vortex up to its complete cut.…”

Section: Introductionmentioning

confidence: 99%

Contribution of tip and hub vortex to the structural response of a marine rudder in the propeller slipstream

2022

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The structural design of the rudder, traditionally based on quasisteady loads generated during worst manoeuvres, should account for load fluctuations associated with the interaction with the wake of the propeller in order to comply with the more stringent requirements on ship vibration and noise pollution. In this context, the present work analyses the dynamic response of a marine rudder located in the wake of the INSEAN E779A propeller by the one-way fluid–structure interaction approach. The time-dependent pressure distribution on the rudder, obtained through detached eddy simulation, is used to evaluate the pressure field that is the input for a structural solver to determine the resulting deformations and stresses. The computations consider the propeller at moderate loading, and rudder deflection angles at neutral and $4^{\circ }$ . The analysis discusses the different contribution of the tip and hub vortex of the propeller on the static and vibratory response of the rudder in the two configurations.

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Underlying mechanisms of propeller wake interaction with a wing

Abstract: Abstract

Cited by 49 publications

References 64 publications

Aerodynamic Performance and Static Stability Characteristics of Aircraft with Tail-Mounted Propellers

Aerodynamic Performance and Static Stability Characteristics of Aircraft with Tail-Mounted Propellers

Temperature and skin-friction maps on a lifting hydrofoil in a propeller wake

Contribution of tip and hub vortex to the structural response of a marine rudder in the propeller slipstream

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