Browse Publications Technical Papers 940521
1994-03-01

Simulation of Flow Field Generated by Intake Port-Valve-Cylinder Configurations-Comparison with Measurements and Applications 940521

Steady flow simulations have been performed on two typical intake port shapes: a straight port and a swirl producing one. The code Star-CD was used with the standard k-ε turbulence model. For both ports, detailed comparisons with measurement data have shown good qualitative results for the discharge coefficient and velocity field in the cylinder. For the second port, the swirl coefficient computation has been largely improved by a global mesh refinement and a blended higher order discretization scheme. Due to the more complex flow structure produced, results for the straight port were found to be less sensitive to those parameters. The discharge coefficient evaluation was also slightly better.
As this approach was shown to be efficient, it is now applied industrially.
Sensitivity to upstream conditions is shown for particular port shapes. Correlation with the swirl measured by a paddle wheel is discussed. The swirl production mechanisms are described using several tools. By analysing these mechanisms, we improved port shape to reach a requested compromise between the discharge and the swirl coefficients.
Engine torque predictions based on computed discharge coefficients correlate properly with test bench results for various cases.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
JOURNAL ARTICLE

A Zonal Turbulence Modeling Approach for ICE Flow Simulation

2016-01-0584

View Details

TECHNICAL PAPER

Balancing Thermodynamic and Aerodynamic Attributes Through the Use of a Common CFD Model

2005-01-2052

View Details

TECHNICAL PAPER

Cylinder Head Structure Optimization Simulation Study based on Sub-Model Method

2017-01-2433

View Details

X