A Comparison of Experimental and Analytical Steady-State Intake Port Flow Data Using Digital Physics

Document Number: 1999-01-1183

Date Published: March 1999

Author(s):
R. Miller - Ford Motor Co.
G. Strumolo - Ford Motor Co.
S. Russ - Ford Motor Co.
M. Madin - Ford Motor Co.
H. Affes - Ford Motor Co.
J. Slike - Ford Motor Co.
D. Chu - Ford Motor Co.

Abstract:
A steady-state flowbench measures the mass and angular momentum flux (swirl and tumble) for a given cylinder head intake port design over varying valve lifts and pressure drops. From these two measurements, enhancements in volumetric efficiency and burnrate can be determined. This methodology, however, requires the production and experimental testing of multiple cylinder head castings of soft-prototypes. To help reduce the number of hardware design iterations, an analytical methodology has been developed which uses a new computational fluid dynamics (CFD) simulation tools called PowerFLOW. From a solid model of the cylinder head, PowerFLOW uses automeshing which produces a 10 million Cartesian volume mesh in 4 CPU hrs. The lattice Boltzmann technique used by PowerFLOW is inherently parallel resulting in steady-state results on this mesh in 36 CPU hrs. This paper presents a comparison of numerically obtained mass flow rates from PowerFLOW to experimental flowbench data.

File Size: 1840K
Product Status: In Stock

See other papers presented at International Congress & Exposition, March 1999, Detroit, MI, USA, Session: Multi-Dimensional Engine Modeling (Part A & B)

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