Application of Radiosity Method to Modelling Cylinder Liner Thermal State of Marine Engines

• Autorzy: Tarełko S. , Kowalski J. , Nowaliński S.
• Konferencja: International Conference Computer Simulation in Machine Design - COSIM 2006 (11 ; 2006 ; Krynica Zdrój, Poland)
• Języki publikacji: EN

Abstrakty

EN

To increase the piston engine effectiveness, we should recognize the heat-releasing phenomenon from an engine cylinder volume. Such knowledge should allow us to model and determine the thermal stresses in the individual structural components of a cylinder liner. Having, in turn, information concerning the distribution of the thermal stresses in these components, we could design an appropriate layout of cooling system elements such as cooling curves, rates, surfaces, etc. This paper deals with the modelling of heat flow through cylinder liner structural components of a two-stroke engine. Especially, we paid attention to simulating temperature distribution for the wet cylinder liner. Multidimensional equations for the transient heat conduction with the Dirichlet and Fourier boundary conditions have been applied. In particularly, we applied local values for the convective and radiative heat transfer coefficients using the Fourier boundary conditions determined in space of cylinder volume. In order to determine the temperature distribution for the considered space, we applied the radiosity method. Simulation results have been presented in the form of a temperature field for cylinder liner structural components depending on the crankshaft position angle. Application of the iterative calculation method for solving differential equations of energy balance allowed us to use software easy to get. We carried out all iterative computations using Excel spreadsheet. This way, we could decrease the simulation cost significantly.

Słowa kluczowe

EN

thermal state; radiosity method; marine engine; combustion chamber; cylinder linear; thermal parameter; diesel engine; combustion engine

PL

stan cieplny; silniki okrętowe; komora spalania; tuleja cylindrowa; obliczenia cieplne; silnik spalinowy

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2006
• Tom: Vol. 30, No. 4
• Strony: 160--170
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Tarełko S.

autor

Kowalski J.

autor

Nowaliński S.

• Gdynia Maritime University. Faculty of Marine Engineering,

Bibliografia

• Galindo, J., Lujan, J. M., Serrano, J. R., Dolz, V., Guilain S., 2006 Description of a heat transfer model suitable to calculate transient processes of turbocharged diesel engines with one-dimensional gas-dynamic codes, Applied Thermal Engineering, 26, 66-76.
• Han, Z., Reitz, R. D., 1997, A temperature Wall function formulation for variable-density turbulent flows with application to engine convective heat transfer modelling, Int. J. Heat Mass Transfer. Elsevier Science, 40, No 3, 613-625.
• Heywood, J. B., 1988, Internal Combustion Engine Fundamentals, McGraw-Hill.
• Heywood, J. B., Sher E., 1999, The two-stroke cycle engine, its development, operation and design, Taylor & Francis, Philadelphia.
• Nagórski, Z., 2001, Modelling heat transfer by means of spreadsheet, Wydawnictwo Politechniki Warszawskiej, Warszawa (in Polish).
• Rychter, T., Teodorczyk, A., 1990, Mathematical modelling of working cycle of piston engine, PWN, Warszawa (in Polish).
• Siegel, R., Howell, J. R., 2001, Thermal Radiation Heat Transfer, 4th ed., Taylor and Francis-Hemisphere, Washington.
• Sulzer RT-flex - Silnik okrętowy Sulzer RT-flex60C dla statków średniej mocy, Folder of Wartsila Corporation, Edition 05/2003.