1. bookVolume 24 (2017): Issue 1 (March 2017)
Journal Details
License
Format
Journal
First Published
20 Dec 2019
Publication timeframe
4 times per year
Languages
English
access type Open Access

The Aircraft Piston Engine Conjugate Heat Transfer Model

Published Online: 04 Nov 2019
Page range: 349 - 355
Journal Details
License
Format
Journal
First Published
20 Dec 2019
Publication timeframe
4 times per year
Languages
English
Abstract

Maintaining high aircraft’s propulsion system reliability requires a good knowledge of engine’s heat transfer conditions at each engine running time. Even though the flow around the cylinder may be steady, the heat flux from the engine is not evenly distributed. This is caused by varied engine head and fins geometry and uneven heat transfer coefficient distribution. The lack of knowledge of the local heat transfer coefficient values and time coefficients for the transient heat transfer make it unfeasible to make an analytical model for a given geometry. One transient Computational Fluid Dynamics simulation does not solve the heat transfer fully. Only a conjugate simulation allows an in-depth analysis of a transient heat transfer. The Combustion and species transport fluid simulation is coupled to the temperature field solid simulation. This work presents the methods and results of such conjugate heat transfer simulation. The change of heat flux parameters in respect to time is shown. The results are verified by the real engine measurements.

Keywords

[1] Gupta, H. N., Fundamentals of internal combustion engines, XVII ed., PHI Learning, 2014.Search in Google Scholar

[2] Borman, G., Nishiwaki, K., Internal-combustion engine heat transfer, Progress in Energy and Combustion Science, Vol. 13, No. 1, pp. 1-46, 1987.Search in Google Scholar

[3] Wu, Y.-Y., Chen, B.-C., Hsieh, F.-C., Heat transfer model for small-scale air-cooled spark ignition four-stroke engines, International Journal of Heat and Mass Transfer, Vol. 49, Iss. 21-22, pp. 3895-3905, 2006.Search in Google Scholar

[4] Hohenberg, G. F., Advanced approaches for heat transfer calculations, S.A.E., No. SP-449, 1978.Search in Google Scholar

[5] Sitkei, G., Ramanaiah, G., A rational approach for calculation of heat transfer in diesel engines, S.A.E., 1972.10.4271/720027Open DOISearch in Google Scholar

[6] Woshni, G., A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine, S.A.E, 1967.10.4271/670931Open DOISearch in Google Scholar

[7] Tulwin, T., A Coupled Numerical Heat Transfer in the Transient Multicycle CFD Aircraft Engine Model, Procedia Engineering, Vol. 157, pp. 255-263, 2016.Search in Google Scholar

[8] Šarić, S., Basara, B., Žunič, Z., Advanced near-wall modeling for engine heat transfer, International Journal of Heat and Fluid Flow, Vol. 63, pp. 205-211, 2017.Search in Google Scholar

[9] Schmitt, M., et al., Investigation of wall heat transfer and thermal stratification under engine-relevant conditions using DNS, International Journal of Engine Research, Vol. 17, Iss. 1, pp. 63-75, 2016.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo