EGU21-13335, updated on 04 Mar 2021
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

On the numerical study of thermohydrodynamics and biochemistry of inland water bodies

Daria Gladskikh1,2,3, Evgeny Mortikov2,3,4, and Victor Stepanenko2,3
Daria Gladskikh et al.
  • 1Institute of Applied Physics of the Russian Academy of Sciences, Nonlinear geophysical processes department, Nizhny Novgorod, Russian Federation (
  • 2Lomonosov Moscow State University, Research Computing Center, Russian Federation
  • 3Moscow Center of Fundamental and Applied Mathematics, Russian Federation
  • 4Institute of Numerical Mathematics, Russian Academy of Sciences, Moscow, Russian Federation

The study of thermodynamic and biochemical processes of inland water objects using one- and three-dimensional RANS numerical models was carried out both for idealized water bodies and using measurements data. The need to take into account seiche oscillations to correctly reproduce the deepening of the upper mixed layer in one-dimensional (vertical) models is demonstrated. We considered the one-dimensional LAKE model [1] and the three-dimensional model [2, 3, 4] developed at the Research Computing Center of Moscow State University on the basis of a hydrodynamic code combining DNS/LES/RANS approaches for calculating geophysical turbulent flows. The three-dimensional model was supplemented by the equations for calculating biochemical substances by analogy with the one-dimensional biochemistry equations used in the LAKE model. The effect of mixing processes on the distribution of concentration of greenhouse gases, in particular, methane and oxygen, was studied.

The work was supported by grants of the RF President’s Grant for Young Scientists (MK-1867.2020.5, MD-1850.2020.5) and by the RFBR (19-05-00249, 20-05-00776). 

1. Stepanenko V., Mammarella I., Ojala A., Miettinen H., Lykosov V., Timo V. LAKE 2.0: a model for temperature, methane, carbon dioxide and oxygen dynamics in lakes // Geoscientific Model Development. 2016. V. 9(5). P. 1977–2006.
2. Mortikov E.V., Glazunov A.V., Lykosov V.N. Numerical study of plane Couette flow: turbulence statistics and the structure of pressure-strain correlations // Russian Journal of Numerical Analysis and Mathematical Modelling. 2019. 34(2). P. 119-132.
3. Mortikov, E.V. Numerical simulation of the motion of an ice keel in stratified flow // Izv. Atmos. Ocean. Phys. 2016. V. 52. P. 108-115.
4. Gladskikh D.S., Stepanenko V.M., Mortikov E.V. On the influence of the horizontal dimensions of inland waters on the thickness of the upper mixed layer // Water Resourses. 2021.V. 45, 9 pages. (in press) 

How to cite: Gladskikh, D., Mortikov, E., and Stepanenko, V.: On the numerical study of thermohydrodynamics and biochemistry of inland water bodies, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13335,, 2021.