This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Thermal Air Flow Analysis of an Automotive Headlamp (The Fourth Report)~Prediction of the Condensation on the Surface of the Parts
Published May 19, 2004 by Society of Automotive Engineers of Japan in Japan
Event: 2004 JSAE Annual Congress
In the present study, in order to predict a vapor condensation, the analogy was assumed between heat transfer and vapor transfer in the boundary layer formed on the surface of the parts inside a headlamp and transport equations of velocity, temperature and vapor concentration was analyzed. As the result, after turn on the bulb, the moisture was once emitted from plastic parts to fluid inside the headlamp, and moisture concentration of fluid became rise. In such stage, by cooling down the surface of the lens, the fog on the surface of the lens arose.