Scavenging Flow Simulation of a Four-Poppet-Valved Two-Stroke Engine

A modified version of KIVA-II code is applied to scavenging flow simulation of a four-poppet-valved two-stroke engine. The standard k-ε turbulence model is used with no slip on the wall. Grid is generated through direct interface with three dimensional CAD data using a commercial CAE package. Valve...

Full description

Saved in:
Bibliographic Details
Main Authors: Huh, Kang Y, Kim, Ku Kyong, Choi, Chang Ryol, Park, Soo Chan, Moon, Sun, Lee, Kwi Young
Format: Report
Language:English
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A modified version of KIVA-II code is applied to scavenging flow simulation of a four-poppet-valved two-stroke engine. The standard k-ε turbulence model is used with no slip on the wall. Grid is generated through direct interface with three dimensional CAD data using a commercial CAE package. Valve motion is taken into account by identifying the cells occupied by the valve structure and putting them as solid obstacle cells. Results show reasonable trends for variation of the velocity field and fresh air mass fraction distribution with crank angle. Parametric study shows that the intake port orientation does not have much effect on the cylinder flow and scavenging efficiency due to strong flow diversion by the valves.
ISSN:0148-7191
2688-3627
DOI:10.4271/930500