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A New Approach to Model the Fan in Vehicle Thermal Management Simulations
Technical Paper
2019-01-5016
ISSN: 0148-7191, e-ISSN: 2688-3627
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Automotive Technical Papers
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English
Abstract
Vehicle thermal management (VTM) simulations constitute an important step in the early development phase of a vehicle. They help in predicting the temperature profiles of critical components over a drive cycle and identify components which are exceeding temperature design limits. Parts with the highest temperatures in a vehicle with an internal combustion engine are concentrated in the engine bay area. As packaging constraints grow tighter, the components in the engine bay are packed closer together. This makes the thermal protection in the engine bay even more crucial. The fan influences the airflow into the engine bay and plays an important role in deciding flow distribution in this region. This makes modelling of the fan an important aspect of VTM simulations. The challenge associated with modelling the fan is the accurate simulation of the rotation imparted by the fan to the incoming flow. Currently, two modelling approaches are prevalent in the industry. They are moving reference frame (MRF) and rigid body motion (RBM). This paper explains the workings and drawbacks of these models in terms of simulating the fan. The study then focuses on overcoming the shortcomings of these models by developing a new method to ensure fast and accurate simulation of the fan. The method works by applying user-defined momentum sources to a disc-type region to effectively simulate the correct rotation of the incoming airflow. The applicability and modularity of the method are then improved by developing a function to simulate the fan at different speeds. This new technique reduces the time associated with accurate simulation of the fan which in turn reduces the turnaround time of VTM simulations. The results have been validated on a cooling module testbench for rotation of the temperature field downstream of the fan and show good agreement with experiment.
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Citation
Ahmed, S., Full, M., and Rottengruber, H., "A New Approach to Model the Fan in Vehicle Thermal Management Simulations," SAE Technical Paper 2019-01-5016, 2019, https://doi.org/10.4271/2019-01-5016.Data Sets - Support Documents
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References
- Coggiola , E. , Dessale , B. , Moreau , S. , and Broberg , R. 1998
- Udawant , K. , Tandon , V. , Joshi , A. , and Srinivasan , M. Design and Development of Radiator Fan for Automotive Application SAE Technical Paper 2012-01-0555 2012 10.4271/2012-01-0555
- Ota , H. , Yuichi , K. , Yukio , O. , and Hiroshi , Y. Development of High Efficient Radiator Cooling Fan for Automotive Application SAE Technical Paper 2013-01-1293 2013 10.4271/2013-01-1293
- Moreauand , S. and Bennett , E. Improvement of Fan Design using CFD SAE Technical Paper 970934 1997 10.4271/970934
- Perot , F. et al. Investigation of the Flow Generated by Anaxial 3- Blade Fan 2010
- Kohri , I. , Kobayashi , Y. , and Matsushima , Y. Prediction of the Performance of the Engine Cooling Fan with CFD Simulation SAE Technical Paper 2010-01-0548 2010 10.4271/2010-01-0548
- Damodaran , V. and Danciu , J. Steady and Transient CFD Analysis of Automotive Fans CFD 2002, Proceedings of the 10th Annual Conference of the CFD Society of Canada Windsor July 7-9 2002 360 365
- Moreau , S. et al. Numerical and Experimental Investigation of Rotor-Stator Interaction in Automotive Engine Cooling Fan Systems ETC, 7th European Conference on Turbomachinery Athens, Greece 2007
- Coggiola , E. , Dessale , B. , Moreau , S. , Broberg , R. , and Bakir , F. CFD Based Design for Automotive Engine Cooling Fan Systems SAE Technical Paper 980427 February 1998 10.4271/980427
- Sahili , A. , Zogheib , B. , and Barron , R. 3-D Modeling of Axial Fans Applied Mathematics 4 4 632 651 2013 10.4236/am.2013.44088
- Foss , J. , Neal , D. , Henner , M. , and Moreau , S. Evaluating CFD Models of Axial Fans by Comparisons with Phase-Averaged Experimental Data Proceedings of the SAE Vehicle Thermal Management Systems Conference Nashville, TN 363 2001 83 92
- Joo , W.G. The Simulation of Turbomachinery Blade Rows in Asymmetric Flow Using Actuator Disks Journal of Turbomachinery 119 4 723 732 1997 10.1115/1.2841182
- Joo , W.G. The Application of Actuator Disks to Calculations of the Flow in Turbofan Installations Journal of Turbomachinery 119 4 733 741 1997 10.1115/1.2841183
- Siemens , A.G. ,
- Gullberg , P. , Löfdahl , L. , Adelman , S. , and 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. , and 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. , and 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
- Gorre , P. , Prasad , P. , Mekala , K. , and Kumbhar , M. An Alternative Method to Improve the CFD Predictions for Vehicle Front End Flow SAE Technical Paper 2015-26-0199 2015 10.4271/2015-26-0199
- Guntupalli , K.
- Gullberg , P. and 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
- Heald , C.C. Cameron Hydraulic Data 19th
- Wu , W. , Lin , Y. , Chow , L. , and Leland , Q. Fan Performance Characteristics at Various Rotational Speeds and Ambient Pressures SAE Technical Paper 2014-01-2219 2014 10.4271/2014-01-2219
- Riesterer , M , Frohnapfel , B , Reister , H , and Binner , T Thermal Protection: Non-Homogeneous Heat Transfer through an Axial Fan STAR Global Conference Vienna 2014
- Rodrigues , O. Des lois géométriques qui régissent les déplacements d'un système solide dans l'espace: et de la variation des coordonnées provenant de ces déplacements considérés indépendamment des causes qui peuvent les produire, Journal de Mathématiques Pures et Appliquées 5 380 440 1840