What is it about?
Liquid jet modeling impinging on a flat surface, is part of a research program to design a test bench for aircraft deicing. Testing will simulate various scenarios of ethylene glycol spraying on the cold surface mock-up of an aircraft wing. The spray characteristics, such as the projection angle, pressure, temperature, distance between the spray exit and the impact point, will be controlled during simulation. These parameters will allow the measurement of ground deicing quality levels. In the long term, after ruling on the formula with the best performance, this study will be used to improve ground deicing personnel training and to reduce pollution.
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Why is it important?
Numerical simulations will improve propylene glycol application by identifying critical parameters such as liquid film thickness. Some considerations were made on the environmental impact that the use of glycol and natural gas would have on the future of deicing techniques, and how these new techniques would change the current system and its procedures.
Perspectives
My co-author and i hope this article will catch the attention of readers because a lot of time has been spent to treat about different subject like numerical method, mathematical model, and interpretation of results. After making a literature review, not a lot of publication have been found in that specific area which is aircraft ground de-icing. Hence the validation of our result, more than anything else, has been carefully highlighted.
Saleh Yakhya
This article has open a new field of research at ÉTS about CFD simulation of ground deicing. Further mathematical model and numerical method improvements are now investigated within the open source code OpenFOAM. Several challenges must be faced, in particular the different length scale of the order of meters for the impinging jet and of the order of milimeters for the film flow and ice region.
François Morency
Ecole de technologie superieure
Read the Original
This page is a summary of: Numerical Study of Momentum and Heat Transfer in Propylene Glycol Jets used for Aircraft Ground Deicing, June 2017, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2017-4504.
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