This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Cooling Airflow System Modeling in CFD Using Assumption of Stationary Flow
Technical Paper
2011-01-2182
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Today CFD is an important tool for engineers in the automotive industry who model and simulate fluid flow. For the complex field of Underhood Thermal Management, CFD has become a very important tool to engineer the cooling airflow process in the engine bay of vehicles.
To model the cooling airflow process accurately in CFD, it is of utmost importance to model all components in the cooling airflow path accurately. These components are the heat exchangers, fan and engine bay blockage effect.
This paper presents CFD simulations together with correlating measurements of a cooling airflow system placed in a test rig. The system contains a heavy duty truck louvered fin radiator core, fan shroud, fan ring and fan. Behind the cooling module and fan, a 1D engine silhouette is placed to mimic the blockage done by a truck engine. Furthermore, a simple hood is mounted over the module to mimic the guiding of air done by the hood shape in an engine bay.
Pressure and flow measurements are monitored over the entire system. Local velocity measurements are done using a set of 48 velocity probes mounted on the radiator. The simulations of this system are correlated to these measurements.
Furthermore to support these simulations, specific simulations and measurements are conducted using the radiator only and the fan only. This is done to see how well each separate component is predicted in CFD and correlated back to the measurements.
This work is the continuation of work presented in [5] and it was identified in this paper that one can simulate the cooling airflow system rather well with steady state CFD. However, fan modeling is sensitive to specific cases, and care must be taken to ensure the accuracy of these simulations.
Recommended Content
Authors
Topic
Citation
Gullberg, P., Lofdahl, L., and Nilsson, P., "Cooling Airflow System Modeling in CFD Using Assumption of Stationary Flow," SAE Technical Paper 2011-01-2182, 2011, https://doi.org/10.4271/2011-01-2182.Also In
References
- Moreau, S. et.al. “Numerical and Experimental Investigation of Rotor-Stator Interaction in Automotive Engine Cooling Fan Systems” ETC, 7th European Conference on Turbomachinery 2007
- Gullberg, P. et.al. “3D Fan Modeling Strategies for Heavy Duty Vehicle Cooling Installations -CFD with Experimental Validation” FISITA World Automotive Congress, F2008-12-087 2008
- Gullberg, P. Löfdahl, L. Adelman, S. Nilsson, P. “A Correction Method for Stationary Fan CFD MRF Models,” SAE Technical Paper 2009-01-0178 2009 10.4271/2009-01-0178
- Gullberg, P. Löfdahl, L. Adelman, S. Nilsson, P. “An Investigation and Correction Method of Stationary Fan CFD MRF Simulations,” SAE Technical Paper 2009-01-3067 2009 10.4271/2009-01-3067
- Gullberg, P. Löfdahl, L. Nilsson, P. Adelman, S. “Continued Study of the Error and Consistency of Fan CFD MRF Models,” SAE Technical Paper 2010-01-0553 2010 10.4271/2010-01-0553
- Gullberg, P. Sengupta, R. “Axial Fan Performance Predictions in CFD, Comparison of MRF and Sliding Mesh with Experiments,” SAE Technical Paper 2011-01-0652 2011 10.4271/2011-01-0652
- Gullberg, P. et.al. “Axial Fan Modelling in CFD Using RANS with MRF, Limitations and Consistency, a Comparison between Fans of Different Design” Vehicle Thermal Management Systems 10 2011
- Gullberg, P. et.al. “Fan Modeling in CFD Using MRF Model For Under Hood Purposes” Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011, AJK2011-23020 2011
- Kohri, I. Kobayashi, Y. Matsushima, Y. “Prediction of the Performance of the Engine Cooling Fan with CFD Simulation,” SAE Int. J. Passeng. Cars - Mech. Syst. 3 1 508 522 2010 10.4271/2010-01-0548
- Pérot, F et.al. “Investigation of the flow generated by an axial 3-blade fan” ISROMAC-13, ISROMAC13-TS28 2010
- Berg, T. et.al. “Fan Modelling for Front End Cooling with CFD” Lule University of Technology Lule, Sweden 2007
- Gullberg, P. “Optimization of the Flow Process in Engine Bays - 3D Fan Modeling Strategies” Chalmers University of Technology Göteborg 2009
- Ruijsink, R. “The Use of the MicroProbe System in Cooling System Development” 3 rd MIRA International Vehicle Aerodynamics Conference (MIRA 2000) 2000