Comparative Investigation on Effect of Droplet Deformation Models on SLD Icing Tokyo University of Science

Format:

Conference/Event

Author/Creator:

Shimura, Shimura, author.

Contributor:

Yamamoto, Makoto

Conference Name:

SAE 2015 International Conference on Icing of Aircraft, Engines, and Structures (2015-06-22 : Prague, Czech Republic)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractIt is well known that SLD (Supercooled Large Droplets) icing is very dangerous because it is more unpredictable than general icing caused by smaller droplets. In SLD conditions, a droplet deforms largely. Vargas and others (2011) performed the experiments about the droplet deformation and they confirmed that the droplet deforms to an oblate spheroid, as the droplet approaches the leading edge of an airfoil. Therefore, the assumption that a droplet behaves as a sphere might be no longer valid. There are many models to predict the droplet deformation in which the deformation is described with the change of drag coefficient. For example, Hospers (2013) summarized the linear relations between the Reynolds number and the drag coefficient. Wiegand (1987) developed a model which uses a quasi-steady normal mode analysis of droplet deformation. However, the effect of the droplet deformation models on SLD icing simulations has not been completely clarified yet. Therefore, in the present study, the authors investigated the effect of the droplet deformation models on SLD icing simulations. The authors used a NACA0012 airfoil, and compared the numerical results with the NASA experiments. It was confirmed that the ice shape, the droplet impinging limit and the icing limit are influenced by the model of the drag coefficient

Notes:

Vendor supplied data

Publisher Number:

2015-01-2117

Access Restriction:

Restricted for use by site license