A Mathematical Model for the Exhaust Gas Temperature Profile of a Diesel Engine

J. R. Sodré, C. H.G. Brito, C. B. Maia

Research output: Contribution to journalConference articlepeer-review


This work presents a heat transfer model for the exhaust gas of a diesel power generator to determine the gas temperature profile in the exhaust pipe. The numerical methodology to solve the mathematical model was developed using a finite difference method approach for energy equation resolution and determination of temperature profiles considering turbulent fluid flow and variable fluid properties. The simulation was carried out for engine operation under loads from 0 kW to 40 kW. The model was compared with results obtained using the multidimensional Ansys CFX software, which was applied to solve the governor equations of turbulent fluid flow. The results for the temperature profiles in the exhaust pipe show a good proximity between the mathematical model developed and the multidimensional software.

Original languageEnglish
Article number012075
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 21 Sept 2015
Event4th International Conference on Mathematical Modeling in Physical Sciences, IC-MSquare 2015 - Mykonos, Greece
Duration: 5 Jun 20158 Jun 2015

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