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Fuel-air mixing and combustion in a two-dimensional Wankel engineA two-equation turbulence model, an algebraic grid generalization method, and an approximate factorization time-linearized numerical technique are used to study the effects of mixture stratification at the intake port and gaseous fuel injection on the flow field and fuel-air mixing in a two-dimensional rotary engine model. The fuel distribution in the combustion chamber is found to be a function of the air-fuel mixture fluctuations at the intake port. It is shown that the fuel is advected by the flow field induced by the rotor and is concentrated near the leading apex during the intake stroke, while during compression, the fuel concentration is highest near the trailing apex and is lowest near the rotor. It is also found that the fuel concentration near the trailing apex and rotor is small except at high injection velocities.
Document ID
19870061509
Document Type
Conference Paper
Authors
Shih, T. I.-P.
(Florida, University Gainesville, United States)
Schock, H. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Ramos, J. I.
(Carnegie-Mellon University Pittsburgh, PA, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1987
Subject Category
Mechanical Engineering
Report/Patent Number
SAE PAPER 870408
Accession Number
87A48783
Funding Number(s)
CONTRACT_GRANT: NAG3-689
CONTRACT_GRANT: NAG3-363
Distribution Limits
Public
Copyright
Other

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