Lifting regimes of thermal plumes in vertical layer
DOI:
https://doi.org/10.7242/1999-6691/2013.6.3.29Keywords:
convective jet in the early stage (thermal plume), thin vertical layer, numerical modeling, 3D-calculations, package OpenFOAM, interaction of plumesAbstract
Theoretical investigation of the dynamics of free thermal plumes in a thin vertical layer has been performed for the case of a cavity heated from below by means of a dotted thermoelement. Three-dimensional numerical modeling has been carried out with the help of package OpenFOAM. This integrable platform is meant for calculations in the area of continuous media mechanics. Four basic plume growth types (viscous-diffusive, inviscid-diffusive, viscous-nondiffusive and inviscid-nondiffusive regimes) are found. Animated images for various lifting regimes are obtained to observe the time-dependent behavior of thermal plumes. The stages of plume formation in a relatively thin layer, its steady lifting and deceleration by the top boundary have been analyzed for different profiles of the plume front. The interaction of two synchronous plumes is studied numerically, and the formation of a common thermal front is demonstrated.
Downloads
References
Lappa M. Thermal convection: patterns, evolution and stability. - UK: Wiley, 2010. - 670 p. DOI
2. Tritton D.J. Physical fluid dynamics. - USA: Oxford University Press, 1988. - 520 p.
3. Van-Dajk M. Al’bom tecenij zidkosti i gaza. - M.: Mir, 1986. - 184 s.
4. Kaminski E., Jaupart C. Laminar starting plumes in high-Prandtl-number fluids // J. Fluid Mech. - 2003. - V. 478. - P. 287-298. DOI
5. Moses E., Zocchi G., Libchaber A. An experimental study of laminar plumes // J. Fluid Mech. - 1993. - V. 251. - P. 581-601. DOI
6. Moses E., Zocchi G., Procaccia I., Libchaber A. The dynamics and interaction of laminar thermal plumes // Europhys. Lett. - 1991. - V. 14, N. 1. - P. 55-60. DOI
7. Hier Majumder C.A., Yuen D.A., Vincent A.P. Four dynamical regimes for a starting plume model // Phys. Fluids. - 2004. - V. 16, N. 5. - P. 1516-1531. DOI
8. Babuskin I.A., Gluhov A.F., Demin V.A., Dagilev R.A., Malovicko D.A. Sejsmopriemnik na osnove acejki Hele-Sou // Prikladnaa fizika. - 2008. - No 3. - S. 134-140.
9. Babuskin I.A., Gluhov A.F., Demin V.A., Zil’berman E.A., Putin G.F. Izmerenie inercionnyh mikrouskorenij s pomos’u konvektivnyh datcikov // Poverhnost’. - 2009. - No 2. - S. 72-77.
10. Babuskin I.A., Demin V.A., Pepelaev D.V. Principy registracii inercionnyh signalov s pomos’u konvektivnyh datcikov // Izvestia TPU. - 2010. - T. 317, No 4. - S. 38-43.
11. Ferziger J.H., Peric M. Computational methods for fluid dynamics. - New York: Springer, 2002. - 423 p.
12. Gavrilov K.A., Demin V.A., Popov E.A. Modelirovanie trehmernyh konvektivnyh tecenij s pomos’u paketa OpenFOAM // Vestnik PGU. Matematika, mehanika, informatika. - 2012. - No 3. - S. 23-28.
13. Gersuni G.Z., Zuhovickij E.M. Konvektivnaa ustojcivost’ neszimaemoj zidkosti. - M.: Nauka, 1972. - 392 s.
14. Babuskin I.A., Kondrasov A.N., Sboev I.O. Razvitie konvektivnogo fakela v vertikal’nom sloe // Vestnik PGU. Fizika. - 2012. - No 4. - S. 101-105.
15. Vargaftik N.B. Spravocnik po teplofiziceskim svojstvam gazov i zidkostej. - M.: Fizmatlit, 1963. - 708 s.
16. Kikoin I.K. Tablicy fiziceskih velicin: Spravocnik. - M.: Atomizdat, 1976. - 1008 s.
17. Gavrilov K.A., Demin V.A., Popov E.A. Dinamika teplovyh plumov v acejke Hele-Sou // Vestnik PGU. Fizika. - 2012. - No 4. - S. 29-33.
Downloads
Published
Issue
Section
License
Copyright (c) 2013 Computational Continuum Mechanics
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.