This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Advances Toward the Goal of a Genuinely Conjugate Engine Heat Transfer Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published January 15, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
As the design of engines advances and continues to push the capabilities of current hardware closer to their durability limits, more accurate and reliable analysis is necessary to ensure that designs are robust. This research evaluates a method of conjugate heat transfer analysis for a diesel engine that combines the combustion CFD, Engine FEA, and cooling jacket CFD with the aim of getting more accurate heat loss predictions and a more accurate temperature distribution in the engine than with current analysis methods. A 15.0 L Cummins ISX heavy duty engine operating at 1250 RPM and 15 bar BMEP load is selected for this work. Spray combustion computational fluid dynamics (CFD) simulations are performed for the diesel engine and the results are validated with experimental data. Finite Element Analysis (FEA) simulations were performed in a separate software platform. Data interchanges between CFD and FEA software codes were performed at specified sub-cycle engine intervals and the simulations ran for multiple engine cycles. A comprehensive CFD-FEA conjugate heat transfer (CHT) methodology is proposed and the accuracy of this method is measured against the existing diesel engine analysis procedures. The detailed CHT model includes the coolant circuit and oil gallery. The CHT results from this detailed method are compared with a traditional thermal FEA method developed in-house at Southwest Research Institute that uses experience based heat transfer coefficients (HTCs) that have been validated to testing. Finally, point-wise measurements of temperature at various locations on the cylinder head are compared with simulation results and are found to correlate reasonably well.
CitationHoffmeyer, M., Moiz, A., Hoag, K., Megel, A. et al., "Advances Toward the Goal of a Genuinely Conjugate Engine Heat Transfer Analysis," SAE Technical Paper 2019-01-0008, 2019, https://doi.org/10.4271/2019-01-0008.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
- Borman, G. and Nishiwaki, K. , “Internal-Combustion Engine Heat Transfer,” Progress in Energy and Combustion Science 13(1):1-46, 1987, doi:10.1016/0360-1285(87)90005-0.
- Nuutinen, M., Kaario, O., and Larmi, M. , “Conjugate Heat Transfer in CI Engine CFD Simulations,” SAE Technical Paper 2008-01-0973, 2008, doi:10.4271/2008-01-0973.
- Urip, E. and Yang, S. , “An Efficient IC Engine Conjugate Heat Transfer Calculation for Cooling System Design,” SAE Technical Paper 2007-01-0147, 2007, doi:10.4271/2007-01-0147.
- Fontanesi, S. and McAssey, E. , “Experimental and Numerical Investigation of Conjugate Heat Transfer in a HSDI Diesel Engine Water Cooling Jacket,” SAE Technical Paper 2009-01-0703, 2009, doi:10.4271/2009-01-0703.
- Kundu, P., Scarcelli, R., Som, S., Ickes, A. et al. , “Modeling Heat Loss through Pistons and Effect of Thermal Boundary Coatings in Diesel Engine Simulations Using a Conjugate Heat Transfer Model,” SAE Technical Paper 2016-01-2235, 2016, doi:10.4271/2016-01-2235.
- Cicalese, G., Berni, F., Fontanesi, S., D'Adamo, A. et al. , “A Comprehensive CFD-CHT Methodology for the Characterization of a Diesel Engine: From the Heat Transfer Prediction to the Thermal Field Evaluation,” SAE Technical Paper 2017-01-2196, 2017, doi:10.4271/2017-01-2196.
- Richards, K.J., Senecal, P.K., and Pomraning, E. , “CONVERGE 2.4,” Convergent Science, Madison, WI, 2018.
- Tao, F., Golovitchev, V., and Chomiak, J. , “Self-Ignition and Early Combustion Process of N-Heptane Sprays under Diluted Air Conditions: Numerical Studies Based on Detailed Chemistry,” SAE Technical Paper 2000-01-2931, 2000, doi:10.4271/2000-01-2931.
- Schmidt, D.P. and Rutland, C.J. , “A New Droplet Collision Algorithm,” Journal of Computational Physics 164(1):62-80, 2000, doi:10.1006/jcph.2000.6568.
- Amsden, A.A. , “KIVA-3V: A Block Structured KIVA Program for Engines with Vertical or Canted Valves,” Los Alamos National Laboratory Technical Report LA-13313-MS, 1997.
- Senecal, P., Pomraning, E., Richards, K., Briggs, T. et al. , “Multi-Dimensional Modeling of Direct-Injection Diesel Spray Liquid Length and Flame Lift-Off Length Using CFD and Parallel Detailed Chemistry,” SAE Technical Paper 2003-01-1043, 2003, doi:10.4271/2003-01-1043.
- Wang, B., Miles, P., Reitz, R., Han, Z. et al. , “Assessment of RNG Turbulence Modeling and the Development of a Generalized RNG Closure Model,” SAE Technical Paper 2011-01-0829, 2011, doi:10.4271/2011-01-0829.
- Angelberger, C., Poinsot, T., and Delhay, B. , “Improving Near-Wall Combustion and Wall Heat Transfer Modeling in SI Engine Computations,” SAE Technical Paper 972881, 1997, doi:10.4271/972881.
- Issa, R.I. , “Solution of the Implicitly Discretised Fluid Flow Equations by Operator-Splitting,” Journal of Computational Physics 62(1):40-65, 1986, doi:10.1016/0021-9991(86)90099-9.
- Rohsenow, W.M. , “A Method of Correlating Heat Transfer Data for Surface Boiling Liquids,” Transactions of the ASME 74:969, 1952.
- Megel, M., Westmoreland, B., Jones, G., Phillips, F. et al. , “Development of a Structurally Optimized Heavy Duty Diesel Cylinder Head Design Capable of 250 Bar Peak Cylinder Pressure Operation,” SAE Int. J. Engines 4(3):2736-2755, 2011, doi:10.4271/2011-01-2232.
- Finlay, I., Boyle, R., Pirault, J., and Biddulph, T. , “Nucleate and Film Boiling of Engine Coolants Flowing in a Uniformly Heated Duct of Small Cross Section,” SAE Technical Paper 870032, 1987, doi:10.4271/870032.
- Szekely, G. and Alkidas, A. , “A Two-Stage Heat-Release Model for Diesel Engines,” SAE Technical Paper 861272, 1986, doi:10.4271/861272.