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Dantchi Hristova Koulova

Position Associate professor

Department: Fluid Mechanics

Room number: 226

Phone: +359 2 979 64 35


Scientific degrees, institution, year:




  • M. Sc. in Mechanics, University of Sofia, Faculty of Mathematics and Mechanics (since 1987 - Faculty of Mathematics and Informatics), 1978
  • Ph.D. in Mathematics, Institute of Mechanics and Biomechanics, Bulgarian Academy of Sciences: “Electroconvection and electrohydrodynamic stability in dielectric liquid layers”, 1993

Fields of Research:



  • Fluid mechanics and heat transfer;
  • Modelling and numerical methods in electrohydrodynamic;
  • Electroconvective flows with free surfaces and interfaces;
  • Electrohydrodynamic instability in two-layer system of non-miscible liquids (theory and experiment).


Extended Information

Recent Publications:

  1. D. Koulova-Nenova, A.T. Pérez, Ph. Traoré, H. Romat, Influence Of The Dielectric Force On A Thermoelectric Convection Phenomena In Case Of Weak Injection, IEEE International Conference on Dielectric Liquids (ICDL), 2008, 110-113

  2. A.T. Pérez, Ph. Traoré, D. Koulova-Nenova, H. Romat, Numerical Modeling of a Two-Dimensional Electrohydrodynamic Plume between a Blade and Flat Plate, IEEE (2008), 44-47.

  3. L. Hadjikov, D. Koulova-Nenova , Ya. Ivanov, et al., Modelling of elastic behaviour of polymer nanocomposites, Comptes rendus de l’Academie bulgare des Sciences, Tome 61, N 4, (2008), 525-534.

  4. Ph. Traoré, D. Koulova-Nenova, H. Romat, Numerical simulation of electro-thermo convection in a rectangular enclosure, Proceed. of the Intern. Symposium on Electrohydrodynamics (ISEHD-2006), December, Buenos Aires, Argentine, (2006), 157-160.

  5. D. Koulova-Nenova, Ph. Traoré, H. Romat, Numerical simulation of the electro-thermo-convection in dielectric liquid in open enclosure, 5-eme Conference de la Societe Francaise d’Electrostatique (SFE), August, Grenoble, France, (2006), 359-363.

  6. P. Traoré, D. Koulova-Nenova and H. Romat, Numerical approach of the electro-thermo-convective motion in a layer of a dielectric liquid, Proceed. of 15th Intern. Conf. on Dielectric Liquids, ICDL’2005, Coimbra, Portugal, (2005), pp. 173-176.

  7. P. Atten, F. Aitken And Koulova-Nenova D., Field-Induced Deformation and Disruption of a Planar Water-Oil Interface under the Influence of a Conducting sphere, Proceed. of 15th Int. Conf. On Dielectric Liquids, ICDL’2005, Coimbra (Portugal), (2005), pp. 165-168.

  8. L. Hadjikov, D. Kulova-Nenova, Ya. Ivanov, 2004, Мodelling of electrorheological emulsion behaviour, Proceed. XIVth International Congress on Rheology, Seoul, Korea, 2004, Seoul, Korea, (2004), SU55_1-SU-55_4.

  9. Atten P. and Koulova-Nenova D., 2002, Time evolution of a viscous liquid jet by one-dimensional model, Theor. and Appl. Mech., Vol. 32, N. 3, pp. 101-114.

  10. Atten P. and Koulova-Nenova D., 2001,Viscous Lee model for the time evolution of a liquid jet, Proceed. 9-th National Congress of Theoretical and Applied Mechanics, Varna, 19-22 Sept. 2001, v. 2, (2001), 7-12.

  11. Atten P., Koulova-Nenova, D., 1999, On the instability of the interface between two layers of conducting and insulating liquids subjected to a DC field, Proceed. of 13th Intern. Conf. on Conduction and Breakdown in Dielectric Liquids, ICDL’99, Japan, pp. 277-280.

  12. Koulova-Nenova D.,1997, EHD instability of two liquid layer system with deformable interface, J. of Electrostatics, Vol. 40-41, pp.185-190.


Recent Projects:

International projects:

  • Fundamental processes of electrocoalescence of water drops in oil, Joint project between Institute of Mechanics, BAS and LEMD,CNRS, Grenoble, France, 2004-2005
  • Investigation of the applications of electrothermoconvection in EHD pumps, Joint project between Institute of Mechanics, BAS and, Poitiers, France, 2008-2009



National projects

  • Non-linear problems of mathematical physics, numerical simulations and visualization, МИ 102/05.
  • Nanotechnology and new materials, 03/2004, МОН




  • Member of Advisory Committee of International Conferences of Dielectric Liquids
  • French Association of Electrostatics
  • Union of Bulgarian Mathematicians



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Modified date:18-02-2019