FENSAP-ICE: Eulerian Modeling of Droplet Impingement in the SLD Regime of Aircraft Icing

Honsek, Raimund; Habashi, Wagdi G.

doi:10.2514/6.2006-465

Cited by 26 publications

(20 citation statements)

References 14 publications

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“…In the present paper, droplet splashing, bouncing, and drag deformation are taken into account through semi-empirical correlations and models suitably adapted to the Eulerian PDE frame, given by Eqs. (1) and (2). The SLD phenomena are basically Lagrangian in nature, and, hence, the corresponding modelization has been traditionally presented in such a way [8].…”

Section: Eulerian Supercooled Large Droplet Physics Modelingmentioning

confidence: 99%

“…However, a correction made by Honsek and Habashi [2] is considered here to better fit the model to experimental results. They calibrated the Trujillo model against the experimental data by Papadakis et al [22] on a NACA 23012 airfoil.…”

Section: Lewice Splashing/bouncing Modelmentioning

confidence: 99%

“…Splashing, rebounding, and droplet deformation drag phenomena are taken into account, and the effects of each of them are studied. To the authors' knowledge, only one attempt has been made (Honsek and Habashi [2]) in the past to include SLD models within an Eulerian approach. However, the method chosen by the authors presented some calibration issues that could make the modelization case-dependent.…”

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confidence: 99%

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Eulerian Modeling of Large Droplet Physics Toward Realistic Aircraft Icing Simulation

Iuliano

Mingione

Petrosino

et al. 2011

Journal of Aircraft

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The supercooled large droplet problem in aircraft icing has gained more and more importance in recent years. Several experimental, numerical, and regulation efforts have been spent to bridge the knowledge gap. New phenomena have been unveiled and studied, to address and explain the peculiar features that characterize the dynamics of a supercooled large droplet water cloud. With reference to the impact behavior of a supercooled large droplet cloud onto an aircraft surface, a numerical method is presented to model the basic impact phenomena and effects at an aircraft component level. Several semi-empirical models, drawn by literature findings, are presented and implemented in a software code to evaluate the water droplet impingement sensitivity in the supercooled large droplet regime. The computational framework is Eulerian; thus, a partial differential equation problem is solved for the water droplet field in a specified space domain. As a consequence, the new supercooled large droplet modeling does not act on the single particle when it hits the surface, but it has to be formulated as a wall sink/source in the water flowfield. To this aim, a new approach is presented, discussed, and compared with existing data. Results show that, even if physics understanding and modeling must be still carefully considered and further developed, the presented approach shows a big potential toward a more realistic prediction of supercooled large droplet icing.

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Section: Eulerian Supercooled Large Droplet Physics Modelingmentioning

confidence: 99%

Section: Lewice Splashing/bouncing Modelmentioning

confidence: 99%

mentioning

confidence: 99%

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Eulerian Modeling of Large Droplet Physics Toward Realistic Aircraft Icing Simulation

Iuliano

Mingione

Petrosino

et al. 2011

Journal of Aircraft

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“…Current methods with capabilities for conventional droplet as well as SLD icing are for instance: ONICE 2D/3D [138] developed by Onera, LEWICE 2D/3D [143] developed by NASA and FENSAP-ICE [58] developed by Ansys (original asset from Newmerical Technologies International). The choice for a suitable numerical method often depends on the application.…”

Section: Methodsmentioning

confidence: 99%

Eulerian method for ice crystal icing in turbofan engines

Norde¹

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“…However, the Lagrangian approach is more common in SLD regime, as droplet deformation, both the splashing and bouncing effects are basically Lagrangian in nature. Although the mass deposition and loss due to droplet splashing can be modeled in an Eulerian modelization through source or flux terms [12][13][14], the droplet splashing and the re-impingement of the secondary droplets are rather difficult challenges to be solved with a field approach. Recently, a significantly computational cost has been reported when droplets re-impingement is considered in Eulerian framework [15].…”

Section: ⅰ Introductionmentioning

confidence: 99%

Lagrangian Approach for Simulating Supercooled Large Droplets’ Impingement Effect

Wang

Chang

2015

Journal of Aircraft

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In this article, a droplet tracking method (DTM) and a splashing model have been developed to calculate the droplet collection efficiency in super-cooled large droplets (SLD) regime using the Lagrangian computational method. In DTM, the droplet deformation and the droplet-wall effects (e.g. splashing, bouncing and re-impingement) which are the typical cases in SLD regime are incorporated by introducing the mass residual ratio. The effects of the transition from the conventional small droplets (CSD) impingement to SLD impingement as well as the splashed secondary droplets on the droplet collection are considered in the current splashing model. Performance and capacities of the DTM and the SLD splashing model are validated against the alternative experimental reference data. The mass loss ratio and the mass back ratio are introduced in order to explore the distribution and the quantity of the mass loss and mass back caused by droplet splashing and re-impingement. The predicted results show that the quantity and the distribution range of the mass back ratio on airfoil surfaces are relatively lower than that of the mass loss ratio. A significant mass back is observed when the airfoil is contaminated with ice. No mass loss or mass back is observed beyond the impinging region for the given conditions.

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FENSAP-ICE: Eulerian Modeling of Droplet Impingement in the SLD Regime of Aircraft Icing

Cited by 26 publications

References 14 publications

Eulerian Modeling of Large Droplet Physics Toward Realistic Aircraft Icing Simulation

Eulerian Modeling of Large Droplet Physics Toward Realistic Aircraft Icing Simulation

Eulerian method for ice crystal icing in turbofan engines

Lagrangian Approach for Simulating Supercooled Large Droplets’ Impingement Effect

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