ד"ר דמיטרי פורטניקוב

2016 Post-Doctoral Research Fellow, Department of Mechanical Engineering, Laboratory for Handling and Conveying of Particulate Solids, Ben-Gurion University of the Negev, Beer-Sheva, Israel. Research Topic: "Modelling and Simulations of Two-Phase Flow (Liquid-Particles)

2015 Ph.D. in Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel. Dissertation: "Temperature Effect on the Strength and Mechanical Properties of Particles", Advisor: Prof. Haim Kalman

2010 M.Sc. in Mechanical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel. Thesis: "Compression Analysis of a Single Particle and a Bed of Particles", Advisor: Prof. Haim Kalman

2009 B.Sc. in Mechanical Engineering, Specialization in Solid Mechanics, Ben-Gurion University of the Negev, Beer-Sheva, Israel.

• Particle mechanics and powder technology

• Fluid–particle interactions and pneumatic conveying

• Mechanical characterization of individual particles

• Experimental characterization and modeling of granular systems

• Strength of Materials 1

• Fluid Mechanics 1

• Intro to Engineering Mechanics

1. S.D. Amar, D. Portnikov, A. Rashkovan, G. Ziskind, Three-dimensional vortex and gas entrainment analysis in rotating liquid flow with a free surface, Physics of Fluids 36 (2024) 085178.

2. H. Kalman, D. Portnikov, Free falling of nonspherical particles in Newtonian fluids, B: Acceleration, Powder Technol. 439 (2024) 119659.

3. H. Kalman, D. Portnikov, Free falling of non-spherical particles in Newtonian fluids, A: Terminal velocity and drag coefficient, Powder Technol. (2024) 119357.

4. H. Kalman, D. Portnikov, Underwater measurements of flowability by angle of repose, Hausner ratio and Jenike shear cell, Powder Technol. 429 (2023) 118883.

5. H. Kalman, D. Portnikov, Acceleration length and time of falling spherical particles, Powder Technol. 425 (2023) 118612.

6. H. Kalman, D. Portnikov, New model to predict the velocity and acceleration of accelerating spherical particles, Powder Technol. 415 (2023) 118197.

7. D. Portnikov, G. Ziskind, H. Kalman, Experimental and computational study of a flighted rotary drum cross-sectional characteristics, Powder Technol. (2022) 117398.

8. Y. Levin, A. Ullmann, D. Portnikov, H. Kalman, Simple pick-up velocity measurement procedure and defining non-settling particles using a rheometer, Powder Technol. 393 (2021) 23-30.

9. H. Kalman, D. Portnikov, Analyzing bulk density and void fraction: B. Effect of moisture content and compression pressure, Powder Technol. 381 (2021) 285-297.

10. H. Kalman, D. Portnikov, Analyzing bulk density and void fraction: A. the effect of Archimedes number, Powder Technol. 381 (2021) 477-487.

11. A. Shreiber, D. Portnikov, H. Kalman, Theoretical and experimental analyses of energy distribution between particle and contact surface under static and dynamic loads,Powder Technol. 380 (2021) 358-367.

12. N. Santo, D. Portnikov, H. Kalman, Experimental study on particle velocity and acceleration length in pneumatic and hydraulic conveying systems, Powder Technol. (2020).

13. Y. Nimrodi, Y. Kozak, D. Portnikov, G. Ziskind, Melting in a Vertical Pipe due to Asymmetric Heating, Renew. Energy 152 (2020) 179-188.

14. I. Yardeny, D. Portnikov, H. Kalman, Experimental investigation of the coefficient of restitution of particles colliding with surfaces in air and water, Adv. Powder Technol. 31 (2020) 3747-3759.

15. D. Portnikov, N. Santo, H. Kalman, Simplified model for particle collision related to attrition in pneumatic conveying, Adv. Powder Technol. 31 (2020) 359-369.

16. D. Portnikov, H. Kalman, J.S. Curtis, P.C. Pullammanappallil, Mechanical characteristics of individual bio particles, Biomass Convers. Biorefin. 10 (2020) 1207-1220.

17. N.M. Tripathi, D. Portnikov, A. Levi, H. Kalman, Bend pressure drop in horizontal and vertical dilute phase pneumatic conveying systems, Chem. Eng. Sci. 209 (2019) 115228.

18. H. Kalman, D. Portnikov, O.G. Gabrieli, N.M. Tripathi, What do pneumatic conveying and hydraulic conveying have in common?, Powder Technol. 354 (2019) 485-495.

19. D. Portnikov, H Kalman, Material comminution functions of wet particles, Powder Technol. 343 (2019) 29-39.

20. N. Santo, D. Portnikov, N.M. Tripathi, H. Kalman, Experimental study on the particle velocity development profile and acceleration length in horizontal dilute phase pneumatic conveying systems, Powder Technol. 339 (2018) 368-376.

21. D. Portnikov and H. Kalman, The effect of temperature on the mechanical characteristics of individual particles, Powder Technol. 336 (2018) 393-405.

22. N. Santo, H. Kalman, D. Portnikov, I. Eshel, R. Taranto, Experimental study on particle steady state velocity distribution in horizontal dilute phase pneumatic conveying, Chem. Eng. Sci. 187 (2018) 354-366.

23. D. Portnikov, R. Peisakhov, G. Gabrieli, H. Kalman, Selection function of particles under impact loads: the effect of collision angle, Particul. Sci. Technol. 36, 4 (2018) 420-426.

24. R. Liburkin, D. Portnikov and H. Kalman, comparing particle breakage in an uniaxial confined compression test to single particle crush tests - model and experimental results, Powder Technol. 284 (2015) 344-354.

25. D. Portnikov, H. Kalman, Determination of elastic properties of particles using single particle compression test, Powder Technol. 268 (2014) 244-252.

26. D. Portnikov, H. Kalman, S. Aman and J. Tomas, Investigating the testing procedure limits for measuring particle strength distribution, Powder Technol. 237 (2013) 489-496.

27. Y. Rozenblat, D. Portnikov, A. Levy, H. Kalman, S. Aman and J. Tomas, Strength distribution of particles under compression, Powder Technol. 208 (2011) 215-224.