Title: Numerical Modeling of Atmospheric Rime Ice Accretion on an Airfoil Using an Eulerian Approach

Abstract

This paper presents an approach to numerically simulate the inherently unsteady rime ice accretion problem on a two-dimensional airfoil and elucidate the associated variations under different icing conditions. The airflow field and the water impingement on the airfoil are obtained based on an Eulerian two-phase model. A dynamic mesh strategy is employed to unsteadily account for the changes in the ice profile and its impact on the air and droplet flow by continuously reconstructing the computational grid at each time-step through smoothing and layering mechanisms. All main icing modules including the airflow field, droplet trajectory, icing thickness profile, and mesh management are fully coupled within the same computational framework without resorting to any external tools. Classical icing theory is employed to model the rime ice roughness, and it is assumed that the ice accretes in a direction normal to the airfoil surface. The governing Reynolds-averaged Navier–Stokes (RANS) conservation equations along with the energy and continuity equations are solved to produce the velocity and temperature fields. A convective film heat transfer coefficient is computed based on the surface heat flux and a recovery temperature which takes into account the dissipative heat release in the boundary layer in the vicinity of themore » airfoil surface. With the implemented strategy and calculating the convective heat transfer coefficient, the water film thickness is also calculated along with the ice shape. Furthermore, the model is validated by comparing the local collection efficiency distribution and ice shape with experimental data, and the results show that the implemented approach provides acceptable predictions of ice accretion profiles and rates.« less

Authors:

Shad, Arash ^[1]; Sherif, S. A.  ^[1]

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+ Show Author Affiliations

1. Univ. of Florida, Gainesville, FL (United States)

Publication Date:

Thu Mar 31 00:00:00 EDT 2022

Research Org.:

Univ. of Florida, Gainesville, FL (United States)

Sponsoring Org.:

USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office

OSTI Identifier:

1874226

Grant/Contract Number:  

EE0007707

Resource Type:

Accepted Manuscript

Journal Name:

Journal of Fluids Engineering

Additional Journal Information:

Journal Volume: 144; Journal Issue: 6; Journal ID: ISSN 0098-2202

Publisher:

ASME

Country of Publication:

United States

Language:

English

Subject:

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ice accretion; Rime ice; glaze ice; airfoil; aircraft wing; aircraft icing; icing; atmospheric; heat transfer; dynamic mesh; CFD