Abstract
A numerical analysis has been made of the thermodynamic regimes of natural convection of a Newtonian fluid satisfying the Boussinesq approximation in the gap between coaxial semicylinders with finitely-thick walls in the presence of the heat-release source under the conditions of convective heat exchange with the environment. A mathematical model has been formulated in the dimensionless variables current function-velocity vorticity vector-temperature in polar coordinates. Streamlines and velocity and temperature fields reflecting the influence of the Prandtl number Pr = 0.7 and 7.0, the nonstationarity factor 0 < τ = 300, the dimensions of the energy source, and of the relative thermal conductivity on the flow regimes and heat transfer have been obtained.
Original language | English |
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Pages (from-to) | 1379-1387 |
Number of pages | 9 |
Journal | Journal of Engineering Physics and Thermophysics |
Volume | 84 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Oct 2011 |
Keywords
- Boussinesq approximation
- Heat conduction
- Horizontal semicylinder
- Polar coordinates
- Thermogravitational convection
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)