A computational analysis of steady laminar natural convection of cold water within a horizontal annulus with constant heat flux on the inner wall and a fixed temperature on the outer surface has been undertaken to explore the occurrence of density inversion of water and its effects on the flow and temperature fields. Results are generated for three values of radius ratio over various ranges of the modified Rayleigh number and density inversion parameter. For the flow circumstances considered, the occurrence of density inversion is found to be mainly dependent on the density inversion parameter. With a negative inversion parameter, the increase of either the modified Rayleigh number or the radius ratio results in a more pronounced effect of density inversion on the flow and temperature fields in the annulus.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes