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Thermal Effects of Shield Shape on Headlamps
Technical Paper
2005-01-1574
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Although a headlamp may meet optical specifications, it can still have thermal problems. In the present study, a high temperature beyond the melting point of the component materials was observed in the hot zone at the upper surface of the bezel and outer lens. Yet, the purpose of a numerical simulation of the thermal flow in a headlamp is not only to verify the thermal problem, but also to improve the headlamp design. Thus, a series of numerical simulations were performed while changing the geometrical shape of the headlamp. As a result, a change in the shape of the bulb shield was identified that was expected to decrease the temperature of the hot zone by 17°C The final design was then experimentally verified using thermocouples and an IR camera, which confirmed an actual drop of temperature of 23°C in the hot zone. Consequently, the maximum temperature on the bezel surface was reduced by increasing the distance between the bulb shield and the bulb.
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Citation
Kang, D., Sah, J., and Park, J., "Thermal Effects of Shield Shape on Headlamps," SAE Technical Paper 2005-01-1574, 2005, https://doi.org/10.4271/2005-01-1574.Also In
References
- Moore William I. Powers Christopher R. Utilizing CFD for Thermal Analysis of a Prototype HID Fog Lamp SAE Technical Paper Series 2001-01-0801 2001
- Coirier William J. Powell Kenneth G. Solution-Adaptive Cartesian Cell Approach for Viscous and Inviscid Flows AIAA J. 34 5 938 945 1996
- Chang S. Haworth D.C. Adaptive Grid Refinement Using Cell-Level and Global Imbalances Int. J. for Numer. Methods in Fluids 24 375 392 1997
- Issa R.I. Gosman A.D. Watkins A.P. The Computation of Compressible and Incompressible Recirculating Flows by a Non-Iterative Implicit Scheme J. Comput. Phys. 62 66 82