Journal of Fluid Science and Technology
Online ISSN : 1880-5558
ISSN-L : 1880-5558
Papers
Numerical simulation of solidification phenomena of single molten droplet on flat plate using E-MPS method
Shinichiro KONDOHiroya MAMORINaoya FUKUSHIMAKoji FUKUDOMEMakoto YAMAMOTO
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2018 Volume 13 Issue 3 Pages JFST0013

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Abstract

When sand particles and volcanic ash are ingested into jet engines, they become molten droplets and are solidified on the surfaces of the turbine blades and endwalls. This is called the deposition phenomenon, and it causes serious problems in the aircraft, e.g., deterioration of the turbine performance and disturbing the cooling flow of the turbine blade. Therefore, the mechanism of the deposition phenomenon should be clarified in order to predict or prevent engine failure. In the present study, we perform three-dimensional numerical simulations of the deposition behavior of a single molten droplet on a cooled substrate using an explicit-moving particle simulation method. The results show a reasonable agreement with the experimental data. We confirm the formation of finger-like-structures that have the characteristic shape of a droplet that has adhered to an edge, and we also investigate effects of the impact angle on the deposition phenomenon.

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© 2018 by The Japan Society of Mechanical Engineers
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