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Aerodynamic and thermal modeling of effusion cooling systems in Large Eddy Simulation

Bizzari, Romain. Aerodynamic and thermal modeling of effusion cooling systems in Large Eddy Simulation. PhD, Dynamique des fluides, Institut National Polytechnique de Toulouse, 2018

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Abstract

Numerical simulation is progressively taking importance in the design of an aero- nautical engine. However, concerning the particular case of cooling devices, the high number of sub-millimetric cooling holes is an obstacle for computational sim- ulations. A classical approach goes through the modelling of the effusion cooling by homogenisation. It allows to simulate a full combustor but failsin representing the jet penetration and mixing. A new approach named thickened-hole model was developed during this thesis to overcome this issue. A work on improving the mesh resolution onkey areas thanks to an automatic adaptive method is also presented, leading to a clear breakthrough. In parallel, as the flame tube temperature is a cornerstone for the combustor durability,a low-cost approach is proposed to predict it. To meet the time-constraints of design, it is based on thermal modelling instead of a direct thermal resolution.

Item Type:PhD Thesis
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Research Director:
Poinsot, Thierry and Dauptain, Antoine
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Deposited On:29 Aug 2019 14:58

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