Flow simulations in an automotive heating, ventilation and air-conditioning (HVAC) blower have been investigated to assess the feasibility of modeling the intake systems by simple geometry. The purpose of this study is to elaborate a simple computational method of intake airflow simulations with the aim of improving the development period in the early stages of design. An experimental study is conducted to measure the aerodynamic HVAC performance and the velocity distributions by means of particle image velocimetry (PIV) within a transparent model. Three configurations of the intake system are investigated: the cowl box, which is the first element of the HVAC system, the inlet duct in outside air mode and in recycling mode, all elements connected to air inlet box. The complete geometrical model contains the intake parts, the blower and the outlet duct whereas the simplified model contains only the first two elements. Experimental and computational results gave a useful insight into the effects of the geometric configurations of intake system on flow behavior and into what features of flow simulations were most important in modeling the intake airflow system of the HVAC blower.
Methodology of intake airflow simulation in an automotive HVAC blower system
Methodologie der Simulierung des Ansaugluftstromes in einem Automobilgebläsesystem für Heizung, Lüfung und Klimatisierung
2003
15 Seiten, 12 Bilder, 6 Tabellen, 5 Quellen
Conference paper
English
Methodology of intake airflow simulation in an automotive HVAC blower system
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