A Mathematical Model for the Exhaust Gas Temperature Profile of a Diesel Engine
[摘要] 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.
[发布日期] [发布机构] Department of Mechanical Engineering, Pontifical Catholic University of Minas Gerais, Av. Dom José Gaspar, 500, Belo Horizonte, MG; 30531-910, Brazil^1
[效力级别] 数学 [学科分类]
[关键词] Exhaust gas temperatures;Gas temperature profile;Heat transfer model;Multidimensional software;Numerical methodologies;Temperature profiles;Turbulent fluid flow;Variable fluid properties [时效性]
