Investigations of Automotive Defroster and Windshield Flow

Stefan Becker; Hermann Lienhart; Carl Stoots; Max Beier; Jörn Hofhaus; Dieter Schlenz; Stefan Zemsch; Edna Ryssel

doi:10.4271/2001-01-3441

2001-10-01

Investigations of Automotive Defroster and Windshield Flow 2001-01-3441

The specification of automotive ventilation / defrosting systems has often utilized “trial-and-error” and “prior experience” techniques. But design development and production efficiency has generated a strong interest in using more sophisticated design tools such as computational fluid dynamics. For this purpose a joint experimental and numerical study was undertaken. This comprehensive investigation was divided into two parts. First, the three dimensional defroster flow field was measured using LDA in an actual automobile. Second, LDA and infrared thermography was used to map the flow and temperature fields for a two dimensional jet impinging upon a slanted plate -- a simplified representation of a car defroster geometry.

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Investigations of Automotive Defroster and Windshield Flow 2001-01-3441

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