Modeling of natural turbulent flow in a passively heated zone

Seyhan Uygur*, Nilüfer Eǧrican

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


In the present study, a modified turbulence model has been developed having the goals of representing the dominant buoyancy effect, and also the low turbulence due to buoyancy and the viscous effects in the vicinity of the wall for a zone heated passively with a Trombe wall, where the magnitudes of aspect ratio and Rayleigh number equal to one and 1010, respectively. Standard viscosity/diffusivity and Daly Harlow approximations for the definition of the scalar quantities are used and compared to each other. The model and the code solving the governing equations may be applied to similar structures, namely, enclosures with aspect ratio about one, having inlet and outlet openings on the heated side. Also, improving the computational convergence and decreasing the computer time are goals of this work.

Original languageEnglish
Pages (from-to)505-520
Number of pages16
JournalEnergy Conversion and Management
Issue number5
Publication statusPublished - May 1996


  • Natural convection
  • Trombe wall
  • Turbulence model


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