NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A two-dimensional numerical study of the flow inside the combustion chamber of a motored rotary engineA numerical study was performed to investigate the unsteady, multidimensional flow inside the combustion chambers of an idealized, two-dimensional, rotary engine under motored conditions. The numerical study was based on the time-dependent, two-dimensional, density-weighted, ensemble-averaged conservation equations of mass, species, momentum, and total energy valid for two-component ideal gas mixtures. The ensemble-averaged conservation equations were closed by a K-epsilon model of turbulence. This K-epsilon model of turbulence was modified to account for some of the effects of compressibility, streamline curvature, low-Reynolds number, and preferential stress dissipation. Numerical solutions to the conservation equations were obtained by the highly efficient implicit-factored method of Beam and Warming. The grid system needed to obtain solutions were generated by an algebraic grid generation technique based on transfinite interpolation. Results of the numerical study are presented in graphical form illustrating the flow patterns during intake, compression, gaseous fuel injection, expansion, and exhaust.
Document ID
19870041350
Document Type
Conference Paper
Authors
Shih, T. I-P. (Florida Univ. Gainesville, FL, United States)
Yang, S. L. (Florida, University Gainesville, United States)
Schock, H. J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1986
Subject Category
MECHANICAL ENGINEERING
Report/Patent Number
SAE PAPER 860615
Distribution Limits
Public
Copyright
Other