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Numerical Modelling of Primary and Secondary Effects of SLD Impingement
Technical Paper
2019-01-2002
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A CFD simulation methodology for the inclusion of the post-impact trajectories of splashing/bouncing Supercooled Large Droplets (SLDs) and film detachment is introduced and validated. Several scenarios are tested to demonstrate how different parameters affect the simulations. Including re-injecting droplet flows due to splashing/bouncing and film detachment has a significant effect on the accuracy of the validations shown in the article. Validation results demonstrate very good agreement with the experimental data. This approach is then applied to a full-scale twin-engine turboprop to compute water impingement on the wings and the empennage. Since the performance characteristics of twin-engine commercial turboprops are such that they operate most efficiently at flight levels where SLD encounters may occur, the goal of this article is to establish a 3D computational methodology to eventually enable a complete study of the impact of FAR 25 Appendix O on the IPS requirements for this class of airplanes. The Appendix O icing conditions used for the demonstration of the methodology are set for a turboprop in a typical holding pattern at 6,000 ft, 190 kts, and 5° angle of attack. The air static temperature is 268 K and the LWC is 0.3 g/m3. Freezing drizzle environments are considered for the MVD > 40-micron droplet distributions. The results for these flight conditions show that inclusion of the secondary impingement due to splashing/bouncing in the simulation accounts for an increased water catch by 4.12% on the wing inboard section and 7.61% on the vertical stabilizer.
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Fouladi, H., Baruzzi, G., Nilamdeen, S., and Ozcer, I., "Numerical Modelling of Primary and Secondary Effects of SLD Impingement," SAE Technical Paper 2019-01-2002, 2019, https://doi.org/10.4271/2019-01-2002.Data Sets - Support Documents
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References
- Petty , K.R. and Floyd , C.D.J A Statistical Review of Aviation Airframe Icing Accidents in the US Proceedings of the 11th Conference on Aviation, Range, and Aerospace Hyannis 2004
- FAA 2009
- National Transportation Safety Board Aircraft Accident Report: In-Flight Icing Encounter And Loss Of Control Simmons Airlines, D.B.A. American Eagle Flight 4184, Avions De Transport Regional (ATR) Model 72-212, N401AM, Roselawn, Indiana, October 31, 1994 1996 https://www.ntsb.gov
- FAA 2018
- Honsek , R. and Habashi , W.G. FENSAP-ICE: Eulerian Modeling of Droplet Impingement in the SLD Regime of Aircraft Icing 44th AIAA Aerospace Sciences Meeting and Exhibit Reno 2006 10.2514/6.2006-465
- Bilodeau , D.R. , Habashi , W.G. , Fossati , M. , and Baruzzi , G.S. Eulerian Modeling of Supercooled Large Droplet Splashing and Bouncing Journal of Aircraft 52 5 1611 1624 2015 10.2514/1.C033023
- Chaussonnet , G. et al. Large Eddy Simulation of a Prefilming Airblast Atomizer International Conference on Liquid Atomization and Spray Systems (ILASS) Chania, Greece 2013
- Linassier , G. et al. Experimental Characterization of Anti-Icing System and Accretion of Re-Emitted Droplets on Turbojet Engine Blades 2018 Atmospheric and Space Environments Conference Atlanta 2018 10.2514/6.2018-3657
- Mundo , C. , Sommerfeld , M. , and Tropea , C. Droplet-Wall Collisions: Experimental Studies of the Deformation and Breakup Process International Journal of Multiphase Flow 21 2 151 173 1995 10.1016/0301-9322(94)00069-V
- Mundo , C. , Tropea , C. , and Sommerfeld , M. Numerical and Experimental Investigation of Spray Characteristics in the Vicinity of a Rigid Wall Experimental Thermal and Fluid Science 15 228 237 1997 10.1016/S0894-1777(97)00015-0
- Mundo , C. , Sommerfeld , M. , and Tropea , C. On the Modeling of Liquid Sprays Impinging on Surfaces Atomization and Sprays 8 625 652 1998 10.1615/AtomizSpr.v8.i6.20
- Honsek , R. , Habashi , W.G. , and Aubé , M.S. Eulerian Modeling of in-Flight Icing Due to Supercooled Large Droplets Journal of Aircraft 45 4 1290 1296 2008 10.2514/1.34541
- Rutkowski , A. , Wright , W.B. , and Potapczuk , M.G. Numerical Study of Droplet Splashing and re-Impingement 41st Aerospace Sciences Meeting and Exhibit Reno 2003 10.2514/6.2003-388
- Wright , W.B. and Potapczuk , M.G. Semi-Empirical Modeling of SLD Physics 42nd Aerospace Sciences Meeting and Exhibit Reno 2004 10.2514/6.2004-412
- Wright , W.B. Further Refinement of the LEWICE SLD Model 44th AIAA Aerospace Sciences Meeting and Exhibit Reno 2006 10.2514/6.2006-464
- Pilch , M. and Erdman , C.A. Use of Breakup Time Data and Velocity History Data to Predict the Maximum Size of Stable Fragments for Acceleration-Induced Breakup of a Liquid Drop International Journal of Multiphase Flow 13 6 741 757 1987 10.1016/0301-9322(87)90063-2
- Bourgault , Y. , Beaugendre , H. , and Habashi , W.G. Development of a Shallow-Water Icing Model in FENSAP-ICE AIAA Journal of Aircraft 37 4 640 646 2000 10.2514/2.2646
- Papadakis , M. , Hung , K.E. , Vu , G.T. , Yeong , H.W. , Bidwell , C. , Breer , M.D. , and Bencic , T.J. 2002
- Bidwell , C. Super Cooled Large Droplet Analysis for Several Geometries Using LEWICE3D Version 3 AIAA Atmospheric and Space Environments Conference Toronto 2010 10.2514/6.2010-7675
- Habashi , W.G. , Dompierre , J. , Bourgault , Y. , Fortin , M. , and Vallet , M.-G. Certifiable Computational Fluid Dynamics through Mesh Optimization AIAA Journal 36 5 703 711 1998 10.2514/2.458
- 2014