Multi-Step Ice Accretion Simulation Using the Level-Set Method

Al-Kebsi, Ali; Mosé, Robert; Hoarau, Yannick

doi:10.4271/2019-01-1955

Cited by 12 publications

(8 citation statements)

References 31 publications

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“…The process is illustrated in Fig. 1 where the modules are: (1) a mesh generation tool, (2) a solver for the aerodynamics, (3) a solver to obtain the droplet trajectories and impingement rates, (4) a solver to obtain the wall convective heat transfer (in the boundary layer), (5) a solver to perform a heat and mass balance applied to the deposited water to obtain the ice accretion rate and finally (6) a tool to update the geometry based on the ice thickness evolution. Modules (1) to (6) are embedded in a time loop for which the total ice accretion time is divided in time steps (multi-step) generating successive layers of ice (multi-layer).…”

Section: Introductionmentioning

confidence: 99%

“…Another research team from the University of Strasbourg applied IBMs to a 3D ice accretion code (NSMB-ICE) with a level-set approach [5]. The compressible viscous flow solver employs a penalty method (an IBM) and the Eulerian droplet solver uses a discrete approach similar to the one of [4].…”

Section: Introductionmentioning

confidence: 99%

“…The level-set approach was initially proposed by [6] for single step ice accretion and is used to update the iced geometry. Multi-step ice accretion results are presented up to 5 steps on a single test case in [5]. According to the authors, the implementation is currently limited to laminar flow and rime ice.…”

Section: Introductionmentioning

confidence: 99%

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Immersed Boundary Methodology for Multistep Ice Accretion Using a Level Set

Lavoie

Radenac

Blanchard

et al. 2022

Journal of Aircraft

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The numerical prediction of in-flight ice accretion involves a sequential call to different modules including mesh generation, aerodynamics, droplet trajectories, wall heat transfer, ice accretion and geometry update. The automation of this process is critical as these solvers are embedded in a time loop which is repeated several times to obtain an accurate ice shape prediction. The robustness of ice accretion tools is often limited by the difficulty of generating meshes on complex ice shapes and also by the geometry update which can exhibit overlaps if not treated properly. As a replacement to the usual body-fitted approach, this paper investigates the application of an immersed boundary method in the ice accretion framework to avoid the mesh generation step. A level-set method is also used for the geometry update to automatically handle pathological cases. The proposed methodology is tested on 2D rime and glaze ice cases from the 1st AIAA Ice Prediction Workshop, showing good correspondence with the body-fitted approach. The new methodology also performs well for a 2D three-element airfoil configuration when a proper mesh refinement is used. The immersed boundary method combined with the level-set ice accretion provides a viable alternative to the body-fitted approach.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Immersed Boundary Methodology for Multistep Ice Accretion Using a Level Set

Lavoie

Radenac

Blanchard

et al. 2022

Journal of Aircraft

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“…A similar approach is followed in Ref. [25], in which a discrete approach is used in combination with a level-set. According to the authors' knowledge, there is no application of a penalization method for Eulerian trajectory solvers in the literature.…”

Section: Introductionmentioning

confidence: 99%

Penalization Method for Eulerian Droplet Impingement Simulations Toward Icing Applications

et al. 2022

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The numerical prediction of in-flight ice accretion generally involves geometry updates and remeshing as the ice builds up. However, the generation of body-fitted meshes around complex ice shapes is not trivial and can be repeated several times to obtain the final ice shape. The use of an immersed boundary method can simplify the mesh generation and help in the automation of the ice accretion process. This paper studies the application of an immersed boundary method to Eulerian droplet impingement simulations. A penalization method is suggested, requiring only the addition of source terms in the continuous form of the equations. The wall boundary condition must be treated with care to avoid droplets reinjection in the computational domain from a solid boundary. This is solved by the introduction of a droplet mask function in addition to the usual solid mask, providing an automatic detection of the wall boundary condition and therefore avoiding droplet reinjection. The approach is tested on canonical cylinder cases and on more realistic NACA0012 airfoil and ice horn cases. The results show that the solution from a body-fitted simulation can be reproduced using the penalization method.

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“…A discrete method (a type of ghost-cell approach) is used by [21] to perform both 2D and 3D simulations on Cartesian grids. A similar approach is followed by [22] where a discrete approach is used in combination with a level-set. According to the authors' knowledge, there is no application of a penalization method for Eulerian trajectory solvers in the literature.…”

Section: Introductionmentioning

confidence: 99%

A Penalization Method for Eulerian Droplet Impingement Simulations towards Icing Applications

Lavoie

Radenac²,

Blanchard³

et al. 2021

AIAA Scitech 2021 Forum

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The numerical prediction of in-flight ice accretion generally involves geometry updates and re-meshing as the ice builds up. However, the generation of body-fitted meshes around complex ice shapes is not trivial and can be repeated several times to obtain the final ice shape. The use of an immersed boundary method can simplify the mesh generation and help in the automation of the ice accretion process. This paper studies the application of an immersed boundary method to Eulerian droplet impingement simulations. A penalization method is suggested requiring only the addition of source terms in the continuous form of the equations. The wall boundary condition must be treated with care to avoid droplets re-injection in the computational domain from a solid boundary. This is solved by the introduction of a droplet mask function in addition to the usual solid mask, providing an automatic detection of the wall boundary condition and therefore avoiding droplet re-injection. The approach is tested on canonical cylinder cases and on more realistic NACA0012 airfoil and ice horn cases. The results show that the solution from a body-fitted simulation can be reproduced using the penalization method.

show abstract

Multi-Step Ice Accretion Simulation Using the Level-Set Method

Cited by 12 publications

References 31 publications

Immersed Boundary Methodology for Multistep Ice Accretion Using a Level Set

Immersed Boundary Methodology for Multistep Ice Accretion Using a Level Set

Penalization Method for Eulerian Droplet Impingement Simulations Toward Icing Applications

A Penalization Method for Eulerian Droplet Impingement Simulations towards Icing Applications

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