Costin CACIU
Ph.D. Research engineer


Centre de Morphologie Mathématique
École des Mines de Paris
35, rue Saint-Honoré
77305 Fontainebleau, France

Tel:    +33 1 64 69 48 00
Fax:   +33 1 64 69 47 07



Ph.D. Subject

I graduated in Mai 2006 my Ph.D. thesis in image processing under the coordination of Etienne DECENCIÈRE and Dominique JEULIN and the main subject of my research was the Analysis and optimisation of the liner surface topography for combustion engines (Analyse et optimisation des surfaces des chemises de moteurs thermiques).

Nowadays, the improvement of the efficiency of the combustion engines in the automotive field is the main key towards greenhouse gas (GHG) emission reduction. The performance of a combustion engine is tightly related to the friction force between the cylinder liner and the piston rings. It is believed that this friction can be significantly reduced by optimising the surface topography of the cylinder. As first step towards this goal, in collaboration with PSA Peugeot Citroën, Renault, Total, Mecachrome and LMS/ENSMM, analysis tools have been developed to study the topography currently used in commercial engines. This work was initially financed by the PREDIT research program, and was continued thanks to the help of the ADEME.

[abstract] [résumé] [Thèse PDF]


  • Numerical Tribometer


  • Publications

  • C. Caciu, E. Decencière and D. Jeulin, Parametric optimisation of periodic textured surfaces for friction reduction in combustion engines, STLE Tribology Transactions, Vol. 51/4, p. 533-541, July 2008. [abstract PDF]

  • C. Caciu, E. Decencière and D. Jeulin, Numerical analysis of the consequences of rugosity modifications in 3D hydrodynamic contacts, STLE Tribology Transactions, Vol. 51/4, p. 483-493, July 2008. [abstract PDF]

  • C. Vincent, C. Caciu, G. Monteil, E. Decencière and D. Jeulin, Friction analysis in laser textured surface lubricated contacts, STLE Annual Meeting, Philadelphia 2007. [abstract PDF]

  • C. Caciu and E. Decencière, Numerical analysis of a 3D hydrodynamic contact, DOI: 10.1002/FLD1164, International Journal for Numerical Methods in Fluids, Wiley, Published Online: February 2006. [abstract PDF]

  • C. Caciu, E. Decencière and D. Jeulin, Stochastic Shape Optimisation, In C. Ronse, L. Najman and E. Decencière (Eds.), Mathematical Morphology: 40 years on (Proceedings of ISMM'2005), pages 333-342, Paris, France, April 2005, Springer. [abstract PDF]

  • C. Caciu et E. Decencière, Étude numérique de l'écoulement 3D d'un fluide visqueux incompressible entre une plaque lisse et une plaque rugueuse, Janvier 2004, Centre de Morphologie Mathématique/ENSMP, rapport interne N-03/04/MM, confidentiel. [résumé PDF]

  • Related Topics

  • Computational Fluid Dynamics [CFD Online] [CFD Review]
  • Applied mathematics [MathWorld]
  • Image processing, Mathematical Morphology
  • Numerical analysis, simulation and optimisation


  • CV

  • Photos Thèse et Barbecue


  • Last updated - 14/02/2006