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Methods for heat transfer and temperature field analysis of the insulated diesel. Phase II. Progress report

Author
Marel, T.
Published
United States : [publisher not identified], 1985
Springfield, Va.: National Technical Information Service, [approximately 1985]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Blumberg, P. N., Fort, E. F., and Karibar, R.

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Summary
In the area of heat radiation, a comprehensive model was developed, that represents the key phenomena and processes which affect radiation heat transfer in diesel engines. The absorption and emission of radiation by soot is treated by a kinetics-based model which calculates the soot formation and burnup. The geometrical description of the process, which is essential to calculation of spatial distribution, uses a zonal approach capable of treating surface radiation and multiple reflections. Predictions were made of heat radiation as a function of speed and load, and it was found that for a heavy duty highway truck engine, radiation accounts for five to twenty-five percent of the total in-cylinder heat transfer. A methodology was developed for coupling the multi-dimensional heat conduction calculations to cycle thermodynamics and in-cylinder heat transfer. Further, a rigorous mathematical procedure was developed for the treatment of the piston-liner interface, accounting for the piston motion and the resulting thermal interactions. Using NASTRAN FEM code, finite element representation of the baseline metallic Cummins NH engine was constructed. The model was then employed in a parametric study of the effects of engine load at rated speed.
Report Numbers
DE86009882; DOE/NASA-0342-2; NASA/CR-175072
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AI01-80CS50194
OSTI Identifier 5827553
Research organization: Integral Technologies, Inc., Westmont, IL (USA).
View MARC record | catkey: 47364033