Banca de DEFESA: LUIZ OTAVIO FERRAO TEIXEIRA ALVES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : LUIZ OTAVIO FERRAO TEIXEIRA ALVES
DATE: 14/06/2023
TIME: 09:00
LOCAL: PPGEM
TITLE:

APPLICATION OF DFSS METHODOLOGY FOR THERMAL ANALYSIS OF THE EtorQ 1.6 ENGINE HEAD USING 3D CFD MODELING

KEY WORDS:

Simulation, CFD (Computational Fluid Dynamics), Star-CCM+, DFSS (Design for Six Sigma), Engine Head Temperature, Optimization.

PAGES: 56
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

The current work has the goal to apply the DFSS (Design for Six Sigma) methodology to an engine head thermal study of a commercial internal combustion engine (ICM). This study aims to perform a 3D CFD thermal simulation for two engine conditions, naturally aspirated and then supercharged, and from there, compare the temperature to find out if the supercharged engine would withstand the thermal stresses. After obtaining the heat map for both working conditions, an optimization will be applied in the head temperature peak region using the DFSS methodology. The 3D CFD simulations performed in this paper were obtained through the Star-CCM+ software, a numerical tool used for CFD simulation, which allowed performing a CHT (Conjugate Heat Transfer) simulation of the engine, through which it is possible to calculate the water jacket flow at the same time that the temperatures of the engine solid components are obtained, and also computing the interaction between the two domains. The engine used for the study was the EtorQ 1.6 SOHC Flex-Fuel, which through a partnership between UFPE and FCA (Fiat Chrysler Automóveis) obtained the engine CAD. The system boundary conditions were defined based on research published in journals and through a 1D thermofluid simulation, which was presented in a master's degree developed at PPGEM-UFPE. The results obtained in the simulation of the supercharged engine indicate that the cylinder head has a region with high temperatures, obtaining a temperature increase of 39°C for the supercharged condition. From the location and value of the temperature peak, it was possible to define where the DFSS optimization of the system will occur and thus choose the control parameters. Eight control factors and the variables quantity for each were then defined. Finally, the optimization allowed the peak temperature to reach a value of 14°C lower than the naturally aspirated condition, in addition to exposing other parameter settings that allowed keeping the temperature of the supercharged condition lower than the naturally aspirated condition.

COMMITTEE MEMBERS:
Presidente - 1420628 - JORGE RECARTE HENRIQUEZ GUERRERO
Interno - ***.889.084-** - JOSE ANGELO PEIXOTO DA COSTA - IFPE
Interna - 1848318 - NADEGE SOPHIE BOUCHONNEAU DA SILVA
Interno - 1130688 - JOSE CARLOS CHARAMBA DUTRA
Externo ao Programa - 2067330 - JOSE CLAUDINO DE LIRA JUNIOR - UFPEExterno ao Programa - 1128125 - FERNANDO ROBERTO DE ANDRADE LIMA - UFPE