Numerical modeling of unsteady two-dimensional convection in a finite-length horizontal layer heated from below

被引：4
作者：
Polezhaev V.I.
Yaremchuk V.P.
机构：
来源：
Fluid Dynamics | 2001年 / 36卷 / 4期
关键词：
Heat Transfer; Convection; Numerical Modeling; Heat Conduction; Flow Pattern;
D O I：
10.1023/A:1012381327742
中图分类号：
学科分类号：
摘要：
The development of two-dimensional thermo-gravitational convection in an elongated horizontal layer bounded by solid surfaces with the bottom instantaneously heated is investigated. The characteristics of the transition from the heat conduction regime to the convective regime are considered. The flow pattern and the heat transfer properties are described from the initial instant, which corresponds to the isothermal fluid at rest, up to the attainment of the steady-state roll-convection regime. A criterial dependence between the Rayleigh number and the nondimensional time of onset of the influence of thermo-gravitational convection on heat transfer is obtained.
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页码：556 / 565
页数：9
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  • [1] Polezhaev V.I., Flow and heat transfer in natural gas convection in a closed region after loss of stability of hydrostatic equilibrium, Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, 5, (1968)
  • [2] Polezhaev V.I., Vlasyuk M.P., On cell convection in an infinite horizontal gas layer heated from below, Dokl. Akad. Nauk SSSR, 195, 5, (1970)
  • [3] Gershuni G.Z., Zhukhovitskii E.M., Convective Instability in an Incompressible Fluid, (1972)
  • [4] Krisnamurti R., Some further studies on the transition to turbulent convection, J. Fluid Mech, 60, PART 2, (1973)
  • [5] Getlig A.V., Rayleigh - Bénard Convection. Structures and Dynamics, (1999)
  • [6] Popov V.N., Application of the Integral Fourier Method to the Investigation of Thermo-salt Turbulent Convection With a Continuous Spatial Spectrum, (1999)
  • [7] Gelfgat A.Y., Different modes of Rayleigh-Bénard instability in two- And three-dimensional rectangular enclosures, J. Comput. Phys, 156, 2, (1999)
  • [8] Sparrow E.M., Husar R.B., Goldstein R.J., Observations and other characteristics of thermals, J. Fluid Mech, 41, PART 4, (1970)
  • [9] Gebhart B., Jaluriya Y., Mahajan R., Sammakiam B., Buoyancy-Induced Flows and Transport, (1988)
  • [10] Bune A.V., Ginzburg A.I., Polezhaev V.I., Fedorov K.N., Numerical and bench modeling of convection development in a water layer cooled from the surface, Izv. Akad. Nauk SSSR, Fiz. Atmos. Okeana, 21, 9, (1985)
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