Modeling of Iced Rotor Dynamics via CFD-CSD Coupling

Yassin, Maged; Nathoo, Munir; Zhao, Zhan; Habashi, Wagdi G.; Fossati, Marco

doi:10.2514/6.2018-3483

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…The current paper takes advantage of a suite of locally developed capabilities that provide a unique framework for rotorcraft simulation based on high-fidelity truly 3D flow computation capabilities. This is based on a palette of highly validated modular CFD-computational solid dynamics tools tackling flow, impingement, ice accretion (Pendenza et al , 2015), performance degradation, structural issues (Yassin et al , 2018), ice cracking and tracking (Anthony et al , 2018), as well as a mesh stitching module (Nathoo et al , 2017) able to model rotor-fuselage interactions and multiple rotors. The entire suite is wrapped in an advanced ROM framework (Zhan et al , 2015) allowing for optimization based on truly 3D computations.…”

Section: Introductionmentioning

confidence: 99%

On a reduced-order model-based optimization of rotor electro-thermal anti-icing systems

Targui

Habashi

2022

HFF

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Purpose Responsible for lift generation, the helicopter rotor is an essential component to protect against ice accretion. As rotorcraft present a smaller wing cross-section and a lower available onboard power compared to aircraft, electro-thermal heating pads are favored as they conform to the blades’ slender profile and limited volume. Their optimization is carried out here taking into account, for the first time, the highly three-dimensional (3D) nature of the flow and ice accretion, in contrast to the current state-of-the-art that is limited to two-dimensional (2D) airfoils. Design/methodology/approach Conjugate heat transfer simulation results are provided by the truly 3D finite element Navier–Stokes analysis package-ICE code, embedded in a proprietary rotorcraft simulation toolkit, with reduced-order modeling providing a time-efficient evaluation of the objective and constraint functions at every iteration. The proposed methodology optimizes heating pads extent and power usage and is versatile enough to address in a computationally efficient manner a wide variety of optimization formulations. Findings Low-error reduced-order modeling strategies are introduced to make the tackling of complex 3D geometries feasible in todays’ computers, with the developed framework applied to four problem formulations, demonstrating marked reductions to power consumption along with improved aerodynamics. Originality/value The present paper proposes a 3D framework for the optimization of electro-thermal rotorcraft ice protection systems, in hover and forward flight. The current state-of-the-art is limited to 2D airfoils.

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