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A Numerical Approach to Develop the Front End Cooling Package in a Vehicle Using Predicted Engine Fan Performance Data and Vehicle System Resistances
Technical Paper
2007-01-0542
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper summarizes the numerical development of a cooling package in a
vehicle. The radiator and condenser fan performance curves are predicted using
Computational Fluid Dynamics (CFD) approach using a numerical AMCA (Air Motion
Control Association) chamber. The same procedure is extended to generate the
combined fan performance curves. System resistance curves at various vehicle
speeds are determined. To determine the vehicle system resistance at various
vehicle speeds, a full vehicle CFD model in a numerical wind tunnel is developed
and analyzed at different fan speeds.
The changes in radiator flow for different scenarios such as change in fan
geometry and the removal of condenser fan are outlined in this work.
The study is then extended to predict radiator hot flow and coolant inlet
temperatures at different vehicle load conditions. An analytical method to
determine hot air flow and air temperature at radiator exit is developed. This
approach is extended to predict coolant inlet temperatures, using the radiator
performance data. This can further be used to compute the required change in
radiator airflow to meet the coolant inlet temperature targets. The feasibility
of removing the condenser fan and still meet the temperature targets is also
outlined.
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Citation
Dube, P., Natarajan, S., Mulemane, A., and Damodaran, V., "A Numerical Approach to Develop the Front End Cooling Package in a Vehicle Using Predicted Engine Fan Performance Data and Vehicle System Resistances," SAE Technical Paper 2007-01-0542, 2007, https://doi.org/10.4271/2007-01-0542.Also In
References
- Damodaran Vijay Rahman Moududur “Front-end Cooling Airflow Performance Prediction Using Vehicle System Resistance” SAE Paper Number 2003-01-0273
- Fluent 6.2 User Guide Fluent Inc. 2005
- Damodaran Vijay Danciu John “Steady and Transient CFD Analysis of Automotive fans” Proc. 10th Annual Conference of the CFD Society of Canada Windsor, Canada June 09-11 2002