An Efficient Numerical Approach for Evaluating the Windshield Defogging Time

2004-01-1504

03/08/2004

Event
SAE 2004 World Congress & Exhibition
Authors Abstract
Content
A windshield defroster has an important roll of clearing up fogged window glasses of a vehicle by blowing out warm air. In simulations parameters that affect the defogging time are the velocity, humidity and temperature of the flow from a defroster nozzle. However, individually varying all the parameters and investigating their effects will lead to many computing cases and long runtime. An approach that can considerably reduce calculation time is proposed. The approach is dictated by two key-steps: 1) First, steady-state velocity distributions for several different defroster flow rates are calculated; 2) Secondly, based on the pre-calculated velocity fields, the defogging time is estimated. This approach is compared to the conventional method that always couples all the parameters in transient calculations.
Meta TagsDetails
DOI
https://doi.org/10.4271/2004-01-1504
Pages
11
Citation
Waku, T., Watanabe, N., Matsumoto, J., and Nakanishi, J., "An Efficient Numerical Approach for Evaluating the Windshield Defogging Time," SAE Technical Paper 2004-01-1504, 2004, https://doi.org/10.4271/2004-01-1504.
Additional Details
Publisher
Published
Mar 8, 2004
Product Code
2004-01-1504
Content Type
Technical Paper
Language
English