Numerical modeling of mesoscale vortex structures near a strong hot impurity source in atmosphere boundary layers
DOI:
https://doi.org/10.7242/1999-6691/2009.2.1.7Keywords:
advection, impurity transport, two-dimensional model, mathematical and numerical simulation, vortexAbstract
This paper presents a new quasi two-dimensional model for impurity propagation from a strong thermal source (by example of oil ignition) taking into account the heterogeneity of turbulent diffusion above the source and outside of it. The equations are deduced from the three-dimensional model of convection. Boundary conditions and coefficients of the model are determined by small-scale turbulence parameterization techniques. The results of numerical calculations show that the intense vortex motion in the bottom layer of atmosphere is formed above the place of oil ignition due to the linear and nonlinear effects of the non-uniform horizontal temperature gradient near the thermal torch. The physical characteristics of vortices and their number are defined by the turbulent heat transfer factors outside of the heat source and above it. The wind field formed under these conditions has an essential influence on the character of oil impurity distribution in the vicinity of the heat source.
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References
Aristov S.N., Svarc K.G. Vihrevye tecenia advektivnoj prirody vo vrasausemsa sloe zidkosti. - Perm’: Perm. un-t, 2006. - 155s.
Svarc K.G., Sklaev V.A. Rasprostranenie primesi v atmosfere ot antropogennogo istocnika pri uslovii intensivnogo nagreva // Mezdunarodnaa konferencia <>: Tez. dokl. (Moskva, 20 - 23 iuna 2005 g.) - M.: IPMeh, 2005.- S. 319 - 322.
Kibel’ I.A. Nekotorye novye zadaci gidrodinamiceskogo kratkosrocnogo prognoza pogody // Tr. Gidrometcentra SSSR. - 1964. - Vyp. 3. - S. 3-18.
Alekseeva L.I., Vel’tisev N.F. Vertikal’nyj perenos konservativnoj primesi v nestacionarnom konvektivnom pogranicnom sloe atmosfery // Meteorologia i gidrologia. - 2007. - No 7. - S. 16-28.
Vel’tisev N.F. Konvekcia v nestacionarnom pogranicnom sloe so sdvigom vetra // Meteorologia i gidrologia. - 2005. - No 6. - S. 15-28.
Vul’fson A.N. Nestacionarnaa avtomodel’naa konvekcia v nejtral’noj atmosfere nad tocecnym istocnikom tepla i konservativnoj primesi // Meteorologia i gidrologia. - 2001. - No 1. - S. 34-49.
Vul’fson N.I., Levin L.M. Issledovanie rasprostranenia strui meteotrona v oblacnoj srede primenitel’no k aktivnym vozdejstviam // Trudy IPG. - 1981. - Vyp. 46. - S. 50-68.
Korakov S.A., Lebedeva T.N. Trehmernaa cislennaa model’ konvektivnogo izolirovannogo oblaka // Trudy IPG. - 1983. - Vyp. 45. - S. 3-20.
Zimin V.D., Levina G.V., Moiseev S.S., Starcev S.E., Svarc K.G. Ob odnom fiziceskom mehanizme generacii krupnomasstabnyh struktur pri turbulentnoj konvekcii // Izvestia RAN. Mehanika zidkosti i gaza. - 1996. - No 5. - S. 20-29.
Batalov V.G., Suhanovskij A.N., Frik P.G. Eksperimental’noe issledovanie spiral’nyh valov v advektivnom potoke, natekausem na goracuu gorizontal’nuu poverhnost’ // Izvestia RAN. Mehanika zidkosti i gaza. - 2007. - No 4. - S. 50-60.
Penenko V.V., Aloan A.E. Modeli i metody dla zadac ohrany okruzausej sredy. - Novosibirsk: Nauka, 1985. - 256s.
Schwarz K.G., Shklyaev V.A. Modeling the propagation of cold contaminent in atmosphere following accidental spilling of volatile liquid // Fluxes and Structures in Fluids - 2003. International Conference: Selected Papers edited by Yu.D. Chashechkin and V.G. Baydulov. - Moscow: Institute for Problems in Mechanics of the RAS, 2004. - P. 172-175.
Aristov S.N., Frik P.G. Krupnomasstabnaa turbulentnost’ v tonkom sloe neizotermiceskoj vrasausejsa zidkosti // Izvestia AN SSSR. Mehanika zidkosti i gaza. - 1988. - No 4. - S. 48-55.
Svarc K.G. Dvumernaa model’ mezomasstabnyh atmosfernyh processov nad krupnym promyslennym gorodom // <>: Sb. naucnyh trudov IVT SO RAN. - Novosibirsk, 1995. - No 13. - S. 326-335.
Svarc K.G., Sklaev V.A. Modelirovanie processov perenosa primesi v svobodnoj atmosfere s pomos’u kvazitrehmernoj modeli // Meteorologia i gidrologia. - 2000. - No 8. - S. 44-54.
Aristov S.N., Svarc K.G. Evolucia vetrovoj cirkulacii v neizotermiceskom okeane // Okeanologia. - 1990. - T. 30. - Vyp. 4. - S. 562-566.
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