Naslov
Thermal management analysis in the engine compartment of a Light Aircraft using Computational Fluid Dynamics

Autori
Zrnić, Dino

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Fakultet strojarstva i brodogradnje

Mjesto
Zagreb

Datum
25.01

Godina
2018

Stranica
100

Mentor
Jasak, Hrvoje

Ključne riječi
compressible ; CFD ; foam-extend ; aircraft propeller ; heat transfer ; cooling ; heat exchanger model ; porous media

Sažetak
In this thesis the cooling system of an engine in a light aircraft influenced by a propeller is simulated. Firstly, investigation is made for aircraft propeller separately, in order to examine air compressibility effects of the flow around the propeller and to determine the performance of the propeller. The second set of simulations deals with heat transfer in the engine compartment of the Pipistrel Panthera aircraft. Computational domains for the propeller and the engine cooling system are made separately for each case. In order to calculate heat transfer in the engine compartment three new heat exchanger models have been implemented and upgraded with porous media effects inside the compressible flow solver: Total Volumetric Heat model, Single stream model and the Nusselt model. Implemented models are validated on a simple test case and comparison of the results is presented. After successful validation heat transfer simulations are performed for engine cooling. Finally, a steady compressible CFD simulation of the flow with heat transfer is performed for the engine compartment case using the actuator disk model and the integral heat exchanger model. Actuator disk theory which uses calculated force and moment data from the aircraft propeller case has been implemented in order to study influence of propeller wakes and fluid flow on the cooling system of engine compartment.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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