We carry out large-eddy simulation of turbulent flow past a complete hydrokinetic turbine mounted on the bed of a straight rectangular open channel. The complex turbine geometry, including the rotor and all stationary components, is handled by employing the curvilinear immersed boundary (CURVIB) method , and velocity boundary conditions near all solid surfaces are reconstructed using a wall model based on solving the simplified boundary layer equations . In this study we attempt to directly resolve flow-blade interactions without introducing turbine parameterization methods. The computed wake profiles of velocities and turbulent stresses agree well with the experimentally measured values.
|Original language||English (US)|
|Journal||Journal of Physics: Conference Series|
|State||Published - 2014|
|Event||4th Scientific Conference on the Science of Making Torque from Wind - Oldenburg, Germany|
Duration: Oct 9 2012 → Oct 11 2012