Browse Publications Technical Papers 1999-01-0234
1999-03-01

The Measurement of Underhood and Underbody Velocities with the H-Meter 1999-01-0234

Optimizing heat protection for underbody and underhood components, using non-CFD heat transfer CAE tools, requires the estimation of local convective heat transfer coefficients. This estimate, in turn requires knowledge of the local air velocity. Currently available methods for obtaining this velocity at several vehicle locations have been impractical and expensive for use in over-the-road testing.
This paper presents the design, fabrication, and field testing results of a 26 mm diameter spherical transducer which measures the local heat transfer coefficient directly. The transducer contains three thermocouples and a heater. It is calibrated to correlate the coefficient with the air velocity. Drawing less than 0.1 A, a number of them can be powered by the vehicle battery with negligible drain. The data acquisition consists of sampling three thermocouples per spherical transducer.

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

Cooling and Airflow Management Development for Trucks Considering Pass-by-Noise

2002-01-2226

View Details

JOURNAL ARTICLE

Concept for Improving Cost Effectiveness of Thermoelectric Heat Recovery Systems

2016-01-0233

View Details

TECHNICAL PAPER

Simplified Experiment and Analysis of the Heat Driven Zeolite Heat Pump

932298

View Details

X