Abstract
Equations for the center-of-mass speed of the parcel of heated air, the mass of the entrained cool air, and the resulting buoyancy of the entire air aggregate have been used to obtain exact and approximate relations for describing height and temporal dependences of the characteristic radius, the excess relative temperature, and convective upwelling of a weakly heated large-scale (hundreds of meters and greater) air aggregate. It is shown that the excess temperature relaxation in the air aggregate occurs quickly and the aggregate radius increases slowly and insignificantly. The variations in the center-of-mass speed of the aggregate are not monotonous. First, the speed increases from zero to the maximum value, and then it decreases to zero. Numerical simulations have been performed for the cases of interest to practical applications.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
B. R. Morton, G. Taylor, and J. S. Turner, “Turbulent gravitational convection from maintained and instantaneous sources,” Proc. R. Soc. London, Ser. A 234 (1196), 1–23 (1956).
Yu. A. Gostintsev and Yu. V. Shatskikh, “On the mechanism of generation of longwave acoustic disturbances in the atmosphere by the emerging cloud of explosion products,” Fiz. Goreniya Vzryva, No. 2, 91–97 (1987).
S. Glasstone and P. J. Dolan, Effects of Nuclear Weapons (Department of Defense, Department of Energy, Washington, DC, 1977).
The 1980 Eruptions of Mount St. Helens, Washington (U.S. G.P.O., Washington, DC, 1981).
Yu. A. Gostintsev, E. A. Ivanov, S. N. Kulichkov, et al., “On the mechanism of infrasound wave generation in the atmosphere by large fires,” Dokl. Akad. Nauk 283 (3), 573–576 (1985).
L. F. Chernogor, “Physical processes in the near-Earth environment accompanying the military operations in Iraq (March–April 2003),” Kosm. Nauka Tekhnol. 9 (2–3), 13–33.
L. F. Chernogor, “Geophysical effects and geoecological consequences of mass chemical explosions at military depots of Artemovsk,” Geofiz. Zh. 26 (4), 31–44 (2004).
L. F. Chernogor, " Geophysical effects and geoecological consequences of the fire and explosions at the Melitopol’ military base,” Geofiz. Zh. 26 (6), 61–73 (2004).
L. F. Chernogor, “Ecological consequences of mass chemical explosions during a technogenic catastrophe,” Geoekol. Inzh. Geol. Gidrogeol. Geokriol. 6, 522–535 (2006).
L. F. Chernogor, “The Earth–atmosphere–ionosphere–magnetosphere as an open dynamical nonlinear physical system. 1, Nelineinyi Mir 4 (12), 655–697 (2006).
L. F. Chernogor, “The Earth–atmosphere–ionosphere–magnetosphere as an open dynamical nonlinear physical system. 2, Nelineinyi Mir 5 (4), 198–231 (2007).
L. F. Chernogor, Physics and Ecology of Catastrophes (KhNU im. V. N. Karazina, Khar’kov, 2012) [in Russian].
N. N. Gorkavyi, T. A. Taidakova, and E. A. Provornikova, “Aerosol plume after the Chelyabinsk bolide,” Sol. Syst. Res. 47 (4), 275–279 (2013).
S. A. Pulinets, D. P. Ouzounov, A. V. Karelin, and D. V. Davidenko, “Physical bases of the generation of short-term earthquake precursors: A complex model of ionization-induced geophysical processes in the lithosphere–atmosphere–ionosphere–magnetosphere system,” Geomagn. Aeron. (Engl. Transl.) 55 (4), 521–538 (2015).
L. F. Chernogor, “Atmospheric effects of the gas–dust plume of the Chelyabinsk meteoroid of 2013,” Izv., Atmos. Ocean. Phys. 53 (3), 259–268 (2017).
L. F. Chernogor, “Dynamics of the convective rise of thermals in the atmosphere,” Izv., Atmos. Ocean. Phys. 54 (6), 528–535 (2018).
E. E. Gossard and W. H. Hooke, Waves in the Atmosphere (Elsevier, Amsterdam, 1975; Mir, Moscow, 1978).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by M. Chubarova
Rights and permissions
About this article
Cite this article
Chernogor, L.F. Dynamics of Convective Upwelling of Large-Scale Weakly Heated Atmospheric Aggregates. Izv. Atmos. Ocean. Phys. 55, 251–256 (2019). https://doi.org/10.1134/S0001433819020038
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0001433819020038