Computational Fluid Dynamics Applied to Two-Stroke Engine Scavenging Department of Mechanical and Industrial Engrg., The Queen's University of Belfast, N. Ireland

Format:

Conference/Event

Author/Creator:

Sweeney, M. E. G., author.

Conference Name:

1985 SAE International Off-Highway and Powerplant Congress and Exposition (1985-09-09 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

A three dimensional computational fluid dynamics program is used to simulate theoretically the scavenging process in the loop-scavenged two-stroke cycle engine. The theoretical calculation uses the k - ε turbulence model and all calculations are confined to the in-cylinder region. The calculation geometry is oriented towards five actual engine cylinders which have been tested under firing conditions for the normal performance characteristics of power, torque, and specific fuel consumption. The same five engine cylinders have also been experimentally tested on a single-cycle gas testing rig for their scavenging efficiency - scavenge ratio characteristics. The ranking of the cylinders in order of merit in terms of scavenging efficiency by both the rig and the theoretical calculations is shown to be in good agreement with the evidence provided by the actual firing engine test results. More interestingly, the theoretical CFD approach provides real insight into the in-cylinder flow behaviour and the loop-scavenging process at both the crank-angle by crank-angle level and its resulting overall effects

Notes:

Vendor supplied data

Publisher Number:

851519

Access Restriction:

Restricted for use by site license