Condensation Zone Estimation and Determination and Comparison of Condensation by Numerical Analysis in Vehicle Lighting System

Authors : Kemal Furkan SÖKMEN, Erol KOCABIYIK, Yunus MEŞECİ, Onur Kadir RENÇBER

Pages : 49-54

Doi:10.31590/ejosat.1173732

View : 17 | Download : 23

Publication Date : 2022-09-30

Article Type : Research Paper

Abstract :The condensation problem in automobile lighting system risks driving and driver safety. Condensation is the main cause of problems such insufficient lighting. In our study, the problem of condensation in vehicle headlights is discussed. The region where condensation will occur was estimated from the results obtained from the temperature analysis. The amount of condensed mass was calculated by the calculation method. Calculations were confirmed by numerical analysis. In the analyzes made in ANSYS 2022 R2 software, the transmission effects insert ignore into journalissuearticles values(conjugate effects); in the headlight components were taken into account. Boussinesq approach was used for natural convection and Monte Carlo approach was used for considering radiation effects. Mesh independence was was studied. Thermal analyzes were made at ambient temperature T∞=5 °C and RH: 95% independent of time. As a result of the analysis, the indoor air temperature distribution, air flow profiles were examined and an estimate was made where the condensation would occur. Then, the thermal analysis results were read as the initial condition, and it was kept for 300 seconds. Water at 3 °C was sprayed onto the lens. Condensation formation analyzes were made in terms of time. After the formation of condensation, the power was turned on to the lighting elements and it was expected that the condensation would be removed within 1800 seconds as per the specification. The region where condensation is predicted and the region with condensation in the analyzes are compatible with the literature.
Keywords : Yoğuşma, ısı transferi, Hesaplamalı akışkanlar mekaniği, taşıt aydınlatma, kütle transferi