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The analysis of airflow in an automotive HVAC cowl box is complicated by the cross sectional variations and abrupt changes in airflow direction. In this study, the complex three-dimensional turbulent flow found in a generic road vehicle cowl box is investigated experimentally and computationally. An optical anemometer is used to acquire the experimental data within a white metal sheet of a cowl box. The results are then used to validate and tune a Computational Fluid Dynamics (CFD) numerical cowl model.

The analysis of airflow in a road vehicle HVAC splitter duct is complicated by the cross sectional variations and abrupt changes in airflow direction. In this study, the complex three-dimensional turbulent airflow found in a generic automotive HVAC splitter duct is investigated experimentally and computationally. An optical anemometer is used to acquire the experimental data within the HVAC duct. The results are then used to validate and tune a Computational Fluid Dynamics (CFD) numerical model.

The analysis of airflow in an automotive HVAC cowl box is complicated by the cross sectional variations and abrupt changes in airflow direction. In this study, the complex three-dimensional turbulent flow found in a generic road vehicle cowl box is investigated experimentally and computationally. An optical anemometer is used to acquire the experimental data within a white metal sheet of a cowl box. The results are then used to validate and tune a Computational Fluid Dynamics (CFD) numerical cowl model.

The safety and comfort aspects of passenger vehicles are significant sales argument and have become a topic of rising importance during the development process of a new vehicle. The objective of this study is to compare the performance of several current model vehicles, highlight the drawbacks of current defrosting/demisting systems and point the way to improved passive mechanisms. The investigation is experimental. The work presented is an experimental and numeric investigation of the clear-up pattern of a current vehicle fitted with an electrically heated windshield. Nottingham FDL climatic wind tunnel is used to perform the experimental tests. The clear up pattern developed utilising the vehicle defroster system is digitally captured and compared to the clear up pattern developed utilising the electrical heated windshield. Moreover, the clear up pattern developed using the vehicle defroster system is used to validate a computational model.