Browse Publications Technical Papers 2019-28-0115

Analysis of Windshield defrosting of a Passenger car- An Experimental and Numerical Approach 2019-28-0115

The outside visibility through the windshield and Outer Rear View Mirror (ORVM) visibility through the side glasses are critical for safe driving. The frost deposition on the Windshield and side glasses in the cold climatic condition impairs the outside and ORVM visibility during driving and hence leads to an unsafe driving condition. In India, the regulation AIS-084 governs the defrosting standard. The defrosting performance evaluation by testing cannot be performed at concept stage when the vehicle prototype is not available. It also increases the cost of vehicle development due to increase in the number of prototype used for Testing. This paper explains about the in-house developed CFD methodology to evaluate the windshield defrosting performance of the vehicle in the concept stage when no Vehicle proto is available and cost of improvement countermeasure for defrosting performance is very less. This methodology is implemented for some of the existing models. The results of CFD simulations were compared to the experimental data using a correlation study and the correlation coefficient of numerical and Experimental measurements were reported. CFD simulation was in good agreement with the experimental study.


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