Numerical simulation of expanding swirling flows with a hybrid RANS/LES turbulence model

15 October 2007 → 30 September 2008
Regional and community funding: Special Research Fund
Research disciplines
  • Natural sciences
    • Fluid mechanics
  • Engineering and technology
    • Energy conversion
hybrid RANS-LES turbulence model precession expanding swirling flow vortex breakdown
Project description

Vortex precession and vortex breakdown in swirling abruptly expanding jets are simulated with a hybrid RANS-LES turbulence model. In the core of the flow, coarse grid LES is used with an e-model as subgrid model (1 dynamic euation). In wall vicinity, the same model is used as RANS model with a mixed low Reynolds number and wall function description.