Abstract
The turbine housing is subjected to thermal load which is essential to be taken into account in the design process. In this paper, a three-dimensional conjugate heat transfer simulation of a wastegated turbine housing has been performed. The model has been validated with data from thermocouple measurements and thermography pictures. Moreover, the effect of ventilation speed on temperature distribution of turbine housing is investigated. As the air velocity increases from 8 to 20 m/s, the turbine housing temperature decreases about 114 K. The wastegate valve could be gradually opened by stepping-up the speed of the engine. The ratio of wastegate flow to the turbine housing gas flow is near 30% for the high rotational speeds and loads. Therefore, the exhaust gas passes through the wastegate channel and the velocity reaches 538 m/s for 2° opening of the wastegate valve. Simulation results show that 1.5 mm decreasing the wall thickness of the volute wall causes 30 Kelvin higher temperature in the turbine housing wall. According to the results of the simulation, the impeller specific work of high gas flow condition was observed to be up to 2.5 times of low mass flow rate operation. Furthermore, the specific amount of gas heat transfer at a closed wastegate condition is significantly higher in comparison to the high gas flow rate and open wastegate condition. In addition, the results show that at low speed and closed wastegate condition, 15 percent of the specific heat transfer occurs before the turbine wheel.
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Abbreviations
- C P :
-
Constant pressure heat capacity (J/kg K)
- h :
-
Enthalpy (J/kg)
- m :
-
Mass (kg)
- P :
-
Pressure (Pa)
- Q :
-
Heat transfer (J)
- S :
-
Source term
- T :
-
Temperature (K)
- t :
-
Time (s)
- V :
-
Flow velocity vector (m/s)
- Y + :
-
Dimensionless wall distance
- ƙ :
-
Thermal conductivity (W/m K)
- ρ :
-
Density (kg/m3)
- τ :
-
Shear stress tensor (Pa)
- Ω:
-
Rotational speed (rad/s)
References
Abram Dorfman S (2017) Applications of mathematical heat transfer and fluid flow models in engineering and medicine, 1st edn. Wiley, New York
Aghaali H, Angstrom H (2012) Turbocharged SI-engine simulation with cold and hot-measured turbocharger performance maps. In: Proceedings of ASME Turbo Expo, ASME Paper No. GT2012-68758. https://doi.org/10.1115/GT2012-68758
Aghaali H, Ångström H, Serrano JR (2015) Evaluation of different heat transfer conditions on an automotive turbocharger. Int J Engine Res 16:137–151. https://doi.org/10.1177/1468087414524755
Alaviyoun SS, Ziabasharhagh M (2020) Experimental thermal survey of automotive turbocharger. Int J Engine Res 21:766–780. https://doi.org/10.1177/1468087418778987
Baines N (2005) Fundamental of turbocharging. Concept NREC, USA
Baines N, Wygant KD, Dris A (2010) The analysis of heat transfer in automotive turbochargers. ASME J Eng Gas Turbines Power 132:042301. https://doi.org/10.1115/1.3204586
Bohn D, Moritz N, Wolff M (2003) Conjugate flow and heat transfer investigation of a turbo charger: part II—experimental results. In: Proceedings of the ASME turbo expo 2003, vol 3, pp 723–729. https://doi.org/10.1115/GT2003-38449
Bohn D, Heuer T, Kusterer K (2005) Conjugate flow and heat transfer investigation of a turbocharger. ASME J Eng Gas Turbines Power 127:663–669. https://doi.org/10.1115/1.1839919
Burke RD, Copeland CD, Duda T, Rayes-Belmote MA (2016) Lumped capacitance and three-dimensional computational fluid dynamics conjugate heat transfer modeling of an automotive turbocharger. ASME J Eng Gas Turbines Power 138:092602. https://doi.org/10.1115/1.4032663
De Souza R, Filho G (2011) Automotive turbocharger radial turbine CFD and comparison to gas stand data. SAE Technical Paper 2011-36-0081. https://doi.org/10.4271/2011-36-0081
Ekström M, Jonsson S (2014) High-temperature mechanical-and fatigue properties of cast alloys intended for use in exhaust manifolds. Mater Sci Eng A 616:78–87. https://doi.org/10.1016/j.msea.2014.08.014
Gao X, Savic B, Baar R (2019) A numerical procedure to model heat transfer in radial turbines for automotive engines. Appl Therm Eng 153:678–691. https://doi.org/10.1016/j.applthermaleng.2019.03.014
Getzlaff U, Hensel S, Reichl S (2010) Simulation of the thermo characteristics of a water-cooled turbocharger. MTZ Worldw 71:28–31. https://doi.org/10.1007/BF03227041
Hajilouy-Benisi A, Rad M, Shahhosseini MR (2009) Flow and performance characteristics of twin-entry radial turbine under full and extreme partial admission conditions. Arch Appl Mech 79:1127–1143. https://doi.org/10.1007/s00419-008-0295-5
Heuer T, Engels B (2007) Numerical analysis of the heat transfer in radial turbine wheels of turbo chargers. In: Proceedings of the ASME turbo expo 2007: power for land, sea, and air, vol 3, pp 959–968. https://doi.org/10.1115/GT2007-27835
Heuer T, Engels B, Wollscheid P (2005) Thermomechanical analysis of a turbocharger based on conjugate heat transfer. In: Proceedings of the ASME turbo expo 2005: power for land, sea, and air, vol 1, pp 829–836. https://doi.org/10.1115/GT2005-68059
Lei VM, Kawakubo T (2007) A fast method for conjugate heat transfer analysis of centrifugal compressor. In: Proceedings of the ASME 2007 international mechanical engineering congress and exposition, vol 8, pp 699–706. https://doi.org/10.1115/IMECE2007-41368
Nagode M, Längler F, Hack M (2011) Damage operator based lifetime calculation under thermo-mechanical fatigue for application on Ni-resist D-5S turbine housing of turbocharger. Eng Fail Anal 18:1565–1575. https://doi.org/10.1016/j.engfailanal.2011.05.018
Olmeda P, Dolz V, Arnau FJ, Reyes-Belmonte MA (2013) Determination of heat flows inside turbochargers by means of a one dimensional lumped model. Math Comput Model 57:1847–1852. https://doi.org/10.1016/j.mcm.2011.11.078
Payri F, Olmeda P, Arnau FJ, Dombrovsky A, Smith L (2014) External heat losses in small turbochargers: model and experiments. Energy 71:534–546. https://doi.org/10.1016/j.energy.2014.04.096
Reyes-Belmonte M (2013) Contribution to the experimental characterization and 1-D modelling of turbochargers for IC Engines. Ph.D. Thesis, University Polytechnic Valencia
Romagnoli A, Martinez-Botas R (2012) Heat transfer analysis in a turbocharger turbine: an experimental and computational evaluation. Appl Therm Eng 38:58–77. https://doi.org/10.1016/j.applthermaleng.2011.12.022
Serrano JR, Olmeda PJ, Arnau FJ, Dombrovsky A, Smith L (2014) Methodology to characterize heat transfer phenomena in small automotive turbochargers: experiments and modeling based analysis. In: Proceedings of the ASME turbo expo 2014: turbine technical conference and exposition, vol 1B, p V01BT24A003. https://doi.org/10.1115/GT2014-25179
Serrano JR, Olmeda P, Arnau FJ, Reyes-Belmonte MA, Tartoussi H (2015) A study on the internal convection in small turbochargers. Proposal of heat transfer convective coefficients. Appl Therm Eng 89:587–599. https://doi.org/10.1016/j.applthermaleng.2015.06.053
Tabatabaei H, Boroomand M, Taeibi Rahni M (2012) An investigation on turbocharger turbine performance parameters under inlet pulsating flow. ASME J Fluids Eng 134:081102. https://doi.org/10.1115/1.4006995
Wibmer M, Schmidt T, Grabherr O, Durst B (2015) Simulation of turbocharger wastegate dynamics. MTZ Worldw 76:28–31. https://doi.org/10.1007/s38313-014-1009-8
Yamagata A, Nagai S, Nakano K, Kawakubo T (2006) Prediction and measurement of turbocharger compressor wheel temperature. In: Proceedings of 8th international conference on turbochargers and turbocharging, pp 3–13. https://doi.org/10.1016/B978-1-84569-174-5.50004-X
Zhang Q, Cen S (2015) Multiphysics modeling: numerical methods and engineering applications. Tsinghua University Press Computational Mechanics Series, Beijing
Zheng X, Jin L, Du T, Gan B, Liu F, Qian H (2013) Effect of temperature on the strength of a centrifugal compressor impeller for a turbocharger. Proc Inst Mech Eng Part C J Mech Eng Sci 227:896–904. https://doi.org/10.1177/0954406212454966
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The authors thank Ali Zakeri and Saeed Javan for supporting the research.
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Alaviyoun, S., Ziabasharhagh, M. & Mohammadi, A. A Three-Dimensional Conjugate Heat Transfer Model of a Turbocharger Turbine Housing. Iran J Sci Technol Trans Mech Eng 46, 71–84 (2022). https://doi.org/10.1007/s40997-020-00399-w
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DOI: https://doi.org/10.1007/s40997-020-00399-w