Vortex motion in axisymmetric piston-cylinder configurations

Technical Report · Wed Sep 01 00:00:00 EDT 1982

OSTI ID:6616437

Shih, T I.P.; Smith, G E; Springer, G S

By using the Beam and Warming implicit-factored method of solution of the Navier-Stokes equations, velocities were calculated inside axisymmetric piston cylinder configurations during the intake and compression strokes. Results are presented in graphical form which show the formation, growth and breakup of those vortices which form during the intake stroke by the jet issuing from the valve. It is shown that at bore-to-stroke ratio of less than unity, the vortices may breakup during the intake stroke. It is also shown that vortices which do not breakup during the intake stroke coalesce during the compression stroke.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center; Michigan Univ., Ann Arbor (USA); Florida Univ., Gainesville (USA)
• OSTI ID: 6616437
• Report Number(s): N-83-35318; NASA-TM-85404
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
VORTICES
COMPRESSION
CYLINDRICAL CONFIGURATION
LAMINAR FLOW
NAVIER-STOKES EQUATIONS
PISTONS
STAGNATION
CONFIGURATION
DIFFERENTIAL EQUATIONS
ENGINES
EQUATIONS
FLUID FLOW
HEAT ENGINES
PARTIAL DIFFERENTIAL EQUATIONS
330100* - Internal Combustion Engines