1991-02-01

The Dimensionless Correlation of Airflow for Vehicle Engine Cooling Systems 910643

An analysis of vehicle engine cooling airflow by means of a one-dimensional, transient, compressible flow model was carried out and revealed that similarity theory could be applied to investigate the variation of the airflow with ambient and operating conditions. It was recognized that for a given vehicle engine cooling system, the cooling airflow behavior could be explained using several dimensionless parameters that involve the vehicle speed, fan speed, heat transfer rate through the radiator, ambient temperature and pressure, and the system characteristic dimension.
Using the flow resistance and fan characteristics measured from a prototype cooling system and the computer simulation for the one-dimensional compressible flow model, a quantitative correlation of non-dimensional mass flow rate to three dimensionless parameters for a prototype heavy-duty truck was established. The results are presented in charts, tables, and formulas.
This methodology may aid both the design and development of vehicle engine cooling systems by providing a systematic method of predicting and investigating the cooling airflow using a limited number of hardware tests.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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:
TECHNICAL PAPER

The Theoretical Development of Vehicle Engine Cooling Airflow Models Using Incompressible Flow Methods

910644

View Details

TECHNICAL PAPER

Research on cooling system for 4-cylinder diesel engine

2007-01-2064

View Details

TECHNICAL PAPER

Simulation Program for Design of the Cooling Air Duct of Motor Cars for Optimizing the Cooling System

940603

View Details

X