A.V. Shapovalov's research works

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A numerical model for controlling the formation of the microstructure of a hail cloud

Article

January 1996

8 Reads

2 Citations

B.A. Ashabokov

A.V. Shapovalov

On the basis of kinetic equations governing microphysical processes in hail clouds at a given hydro-thermodynamic state, a problem on the optinal control of the formation of the microstructure of a hail clouds is discussed. Its numerical solution is presented for intense hail clouds. The simulation has demonstrated the efficiency of numerical models for studies of controlling the precipitation formation in clouds of various types. Its follows from the simulation that the detrimental effects of a hail clouds can be significantly altered.

A numerical study of hail formation and growth at the natural development of a cloud and cloud modification

Article

January 1994

15 Reads

4 Citations

Calculation results are presented of formation of hail cloud microstructure under natural conditions and those of cloud modification. It is shown that a significant role in hailstone formation belongs to deformation of fields of thermodynamic parameters of a cloud under the influence of updrafts. The present-day notions of cloud structure, movement and growth of hailstone, and also the existing concepts of hail modification are specified.

... A more promising method for cloud precipitation formation control is to consider the problem in terms of the optimal control theory (Pontryagin et al., 1976). This approach is implemented in the case of hail clouds (the problem of preventing the emergence of hazardous hail stones in clouds) (Ashabokov et al., 2014;Ashabokov & Shapovalov, 1996). As is known, the solution of optimal control problems is always hindered by serious difficulties. ...
Reference:
On certain approaches to the control methods development for the precipitation formation processes in convective clouds

A numerical model for controlling the formation of the microstructure of a hail cloud

Citing Article
January 1996

B.A. Ashabokov

A.V. Shapovalov

... The research of a particular mechanism's role on the formation and development of clouds is based on the study of the influence of changes in the fields of atmospheric parameters corresponding to this mechanism. Conducting this kind of research requires the involvement of mathematical models of clouds [1][2][3][4][5]. In the cloud modeling the temperature fields in the surface layer of the atmosphere are used to initialize the convective flow (setting the thermal pulse). ...
Reference:
Influence of the initial thermal pulse’s temperature on the processes of cloud formation based on the results of mathematical modeling

A numerical study of hail formation and growth at the natural development of a cloud and cloud modification

Citing Article
January 1994

A.V. Shapovalov’s scientific contributions

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