This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Model for Application of Chen's Boiling Correlation to a Standard Engine Cooling System
Technical Paper
2008-01-1817
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
With the increase of specific power, in development of modern engines, also the demand on the cooling system has significantly increased. CFD analysis reveals the occurrence of localized boiling, since often the measured temperature distribution cannot be explained by convective heat transfer alone [1]. The requirement for highest heat transfer rates has led to the very promising concept of a controlled transition from pure convection to subcooled boiling in the critical thermal conditions [2]. However, computational fluid dynamics is still unable to represent boiling flow, while any boiling based strategy requires a right prediction of heat transfer rates on the coolant surface inside IC engines. Chen's heat transfer model for boiling region [1, 2, 4, 6] is widely used today, to predict and compare the predicted heat transfer coefficients in circular and rectangular ducts with experimental results.
In spite of this, it's very difficult its application to IC engines cooling passages where the definition of an hydraulic diameter for the model is very impractical.
The present work proposes a new application model that, leaving every experimental aspect but taking advantage only from CFD analysis, solves the problems connected with direct application of Chen's model to coolant passages inside an IC engine. This model has been applied to the cylinder head of a 1.4 L 4-cylinder 16-valve Turbo SI engine.
The predicted wall temperatures are found in overall agreement with experimental data.
Recommended Content
Authors
Citation
Cardone, M., Senatore, A., Buono, D., Polcino, M. et al., "A Model for Application of Chen's Boiling Correlation to a Standard Engine Cooling System," SAE Technical Paper 2008-01-1817, 2008, https://doi.org/10.4271/2008-01-1817.Also In
References
- Robinson K. Hawley J. G. Campbell N.A.F. “ Experimental and modelling aspects of flow boiling heat transfer for application to internal combustion engines ” Journal of Automobile Engineering 217 877 889
- Steiner H. Kobor A. Gebhard L. “ A wall heat transfer model for subcooled boiling flow ” International Journal of Heat and Mass Transfer 48 September 2005
- Zieher F. Langmayr F. Jelatancev A. Wieser K. “ Thermal Mechanical Fatigue Simulation of Cast Iron Cylinder Heads ” SAE paper 2005
- Campbell N.A.F. Hawley J. G. Robinson K. Joyce S. Haigh M. “ Predictions for Nucleate Boiling - Results from a Thermal Bench Marking Exercise Under Low Flow Conditions ” SAE paper 2002
- Lee H. Sung Cholewczynski L. W. “ A study on Convection and Boiling Heat Transfer Modes in a Standard Engine Cooling System ” SAE 2003 Brighton UK
- Rohsenow Warren M. Hartnett James P. Cho Young I. “ Handbook of Heat Transfer ” Third MCGRAW-HILL USA 1998
- Kandlikar S. G. “ Heat Transfer Characteristics in Partial Boiling, Fully Developed Boiling, and Significant Void Flow Regions of Subcooled Flow Boiling ” ASME paper May 1998 120 395 401
- Kreith Frank “ Principles of heat transfer ” New York 1973
- Robertson Hartland J. Gil-Martinez A. “ Heat Flux Estimation and the Control of Nucleate Boiling in a Laboratory Test Rig ” SAE paper May 2005
- Marshall T. D. “ FILM-30: A Heat Transfer Properties Code for Water Coolant ” Idaho National Engineering and Environmental Laboratory 2001
- Manual of the fluid dynamic code STAR-CD
- Doria Guelfo Pulci “ Statistical quantities distribution in turbulent flows and the use of the entropy concept ” CUEN Napoli 1996