Current turbulence models for simulating natural convection require too much computation time or do not give sufficiently accurate results. A one-equation near-wall model is developed that incorporates the use of direct numerical simulation data (Ra=5.4×105) to remedy these shortcomings. The use of this near-wall model along with the standard k-ε model for the outer-wall region, yields good predictions for mean flow and turbulence in natural convection and significantly reduces computational cost.
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes