Field of scientific interests

Hydrodynamic stability and turbulence, kinetic theory of gases, physical and chemical processes, mathematical modeling.

Professional Awards

2014 - The Academician Petrov Prize of National Committee on Theoretical and Applied Mechanics of Russian Academy of Sciences for outstanding studies on hydrodynamic stability theory and turbulence.

Current professional status

Professor, Department of Mathematics and Physics, Novosibirsk State Agrarian University.

Basic publications

1. Grigor'ev Yu.N., Ershov I.V. Relaxation-induced suppression of vortex disturbances in a molecular gas // J. Appl. Mech. Tech. Phys. (2003). Vol. 44, Issue 4. P. 471-481. DOI: 10.1023/A:1024236705242 

2. Grigor'ev Yu.N., Ershov I.V., Ershova E.E. Influence of vibrational relaxation on the pulsation activity in flows of an excited diatomic gas// J. Appl. Mech. Tech. Phys. (2004). Vol. 45, Issue 3. P. 321-327. DOI: 10.1023/B:JAMT.0000025012.06060.9e

3. Grigor'ev Yu.N., Ershov I.V. Effect of bulk viscosity on Kelvin-Helmholtz instability // J. Appl. Mech. Tech. Phys. (2008). Vol. 49, Issue 3. P. 407-416. DOI: 10.1007/s10808-008-0056-9

4. Grigor'ev Yu.N., Ershov I.V. Energy estimate of the critical Reynolds numbers in a compressible Couette flow. Effect of bulk viscosity // J. Appl. Mech. Tech. Phys. (2010). Vol. 51, Issue 5. P. 669-675. DOI: 10.1007/s10808-010-0086-y

5. Grigor'yev Yu.N., Yershov I.V. The linear stability of inviscid shear flow of a vibrationally excited diatomic gas // J. Appl. Math. Mech. (2011). Vol. 75, Issue 4. P. 410–418. DOI: 10.1016/j.jappmathmech.2011.09.006

6. Grigor'ev Yu.N., Ershov I.V. Critical Reynolds number of the couette flow of a vibrationally excited diatomic gas energy approach // J. Appl. Mech. Tech. Phys. (2012). Vol. 53, Issue 4. P. 517-531. DOI: 10.1134/S0021894412040062

7. Grigor'ev Yu.N., Ershov I.V. Dissipation of vortex disturbances in a vibrationally nonequilibrium diatomic gas // Thermophysics and Aeromechanics (2012). Vol. 19, Issue 2. P. 183-192. DOI: 10.1134/S0869864312020023

8. Grigor'ev Yu.N., Ershov I.V. Linear stability of the Couette flow of a vibrationally excited gas. 1. Inviscid problem // J. Appl. Mech. Tech. Phys. (2014). Vol. 55, Issue 2. P. 258-269. DOI: 10.1134/S0021894414020084

9. Grigor'ev Yu.N., Ershov I.V. Linear stability of the Couette flow of a vibrationally excited gas. 2. Viscous problem // J. Appl. Mech. Tech. Phys. (2016). Vol. 57, Issue 2. P. 247–257. DOI: 10.1134/S0021894416020073

10. Grigor'ev Yu.N., Ershov I.V. Asymptotic theory of neutral stability curve of the Couette flow of vibrationally excited gas // J. Phys.: Conf. Ser. (2016). Vol. 722. P. 012012.  DOI: 10.1088/1742-6596/722/1/012012

11. Grigor'ev Yu.N. and Ershov I.V. Linear stability of Couette flow of vibrationally non-equilibrium gas // AIP Conf. Proc. (2016). Vol. 1770. P. 030043.  DOI: 10.1063/1.4963985

12. Grigor'ev Yu.N., Ershov I.V. Linear stability of supersonic Couette flow of a molecular gas under the conditions of viscous stratification and excitation of the vibrational mode // Fluid Dynamics (2017). Vol. 52, No. 1. P. 9–24. DOI: 10.1134/S0015462817010021

13. Grigor'ev Yu.N. and Ershov I.V. Asymptotic theory of neutral stability of the Couette flow a vibrationally excited gas // J. Appl. Mech. Tech. Phys. (2017). Vol. 58, Issue 1. P. 1–16 . DOI: 10.1134/S0021894417010011

14. Grigoryev Yu.N., Ershov I.V. Stability and Suppression of Turbulence in Relaxing Molecular Gas Flows. Springer International Publishing AG, Cham, Switzerland (2017).   ISBN 978-3-319-55359-7   ISBN 978-3-319-55360-3 (eBook) DOI: 10.1007/978-3-319-55360-3

15. Grigor'ev Yu.N. and Ershov I.V. Stability investigations of relaxing molecular gas flows. Results and perspectives // AIP Conf. Proc. (2017). Vol. 1893. P. 020013.  DOI: 10.1063/1.5007451

16. Grigor'ev Yu.N. and Ershov I.V. Asymptotic and numerical solution of the linear stability problem of boundary layer of relaxing gas on a plate // AIP Conf. Proc. (2018). Vol. 2027. P. 020008. DOI: 10.1063/1.5065086

17. Grigor'ev Yu.N. and Ershov I.V. Linear Stability of the Boundary Layer of Relaxing Gas on a Plate // Fluid Dynamics (2019). Vol. 54, No. 3. P. 295–307. DOI: 10.1134/S0015462819030054   The full-text access to version of  paper (a view-only): https://rdcu.be/bIqSC

18. Grigoryev Yu.N., Ershov I.V. Linear stability of a supersonic boundary layer on a plate under conditions of vibrational excitation and of viscous stratification // J. Phys.: Conf. Ser. (2019). Vol. 1268. P. 012021.  DOI: 10.1088/1742-6596/1268/1/012021

19. Grigoryev Yu.N. and Ershov I.V. Linear stability of a supersonic boundary layer on a plate under condition of vibrational excitation of a gas // AIP Conf. Proc. (2019). Vol. 2125. P. 020013. https://doi.org/10.1063/1.5117373 

20. Grigoryev Yu.N. and Ershov I.V. Asymptotic Estimate of Stability of a Supersonic Boundary Layer in a Vibrationally Excited Gas on a Plate// Fluid Dynamics. 2019. Vol. 54, No. 8. P. 1020–1037. DOI: 10.1134/S0015462819080032

21. Grigoryev Yu.N. and Ershov I.V.  Estimates of stability characteristics of boundary layer on a plate under conditions of vibrational excitation of a gas // AIP Conf. Proc. (2020). Vol. 2228. P. 020013.  https://doi.org/10.1063/5.0028576

22. Grigoryev Yu.N. , Gorobchuk A.G., and Ershov I.V. To calculation of a stationary boundary layer under conditions of strong thermochemical nonequilibrium // AIP Conf. Proc. (2020). Vol. 2228. P. 030003.  https://doi.org/10.1063/5.0028577

23. Grigoryev Yu.N. and Ershov I.V.  Influence of vibration excitation on the zone of laminar–turbulent transition on a plate // J. Phys.: Conf. Ser. (2020). Vol. 1666. P. 012015. DOI: 10.1088/1742-6596/1666/1/012015

24. Grigor'ev Yu.N. and Ershov I.V. Influence of vibrational excitation of the gas on the position of the laminar-turbulent transition region on a plate  // J. Appl. Mech. Tech. Physics (2021). Vol. 62, Issue 1. P. 11–17 . DOI: 10.1134/S0021894421010028 

25. Grigoryev Yu.N. , Gorobchuk A.G., and Ershov I.V.  Model of the boundary layer of a vibrationally excited dissociating gas// Thermophysics and Aeromechanics (2021). Vol. 28, Issue 5. P. 635-647. DOI: 10.1134/S0869864321050048    The full-text access to version of  paper (a view-only): https://rdcu.be/cFwrG

26.  Grigoryev Yu.N. , Gorobchuk A.G., and Ershov I.V.  Two approaches to modeling the boundary layer of the vibrationally nonequilibrium dissociating diatomic gas  //  AIP Conf. Proc. (2023). Vol. 2504. P. 030080.  https://doi.org/10.1063/5.0132321