Numerical Simulation of High Reynolds Number Wall Bounded Flow

In this thesis, four different numerical methods are used for predictions of high Reynoldsnumber (Re), wall bounded flows; Large Eddy Simulation (LES) with two different subgrid(turbulence) models, the One Equation Eddy Viscosity model (OEEVM) and the MixedModel (MM), Monotone Integrated LES (MILES), Detached Eddy Simulation (DES) andReynolds Averaged Navier Stokes (RANS). The LES calculations are combined with a wallmodel based on the law-of-the-wall and in DES a hybrid RANS/LES method is used forhandling the near wall region. These methods are validated against several well known,generic flow cases; a jet flow at Re=95,000, fully developed turbulent channel flow atRet=395, 595 and 1800, flow past a circular cylinder at Re=3900 and 140,000, flow past aprolate spheroid at 10\ub0 and 20\ub0 angle of attack at Re=1.6\ub710^6, flow around an axisymmetrichill at Re=1.3\ub710^5 and flow past the DARPA Suboff configuration AFF-1 and AFF-8 atRe=12\ub710^6.The focus of this thesis is on LES and subgrid modeling in LES, and LES-MM and LESOEEVMis used in all validation cases, while DES is used in the axisymmetric hill and thecircular cylinder cases. The MILES model is only used in the cylinder case and RANS only inthe axisymmetric hill case. A careful theoretical investigation is performed of LES-MM,where a reformulation of the LES equations is proposed. LES-MM also performs the bestprediction of the flow field compared with the other numerical methods, especially for themore complex cases.Keywords: LES, DES, subgrid model, validation, near-wall, numerical simulation, highReynolds number, turbulenc