The Development of a Partially Averaged Navier-Stokes KSKL Model
Maarten Klapwijk (Maritime Research Institute Netherlands (MARIN), TU Delft - Ship Hydromechanics and Structures)
Thomas Lloyd (Maritime Research Institute Netherlands (MARIN))
Guilherme Vaz (blueOASIS)
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Abstract
A new partially averaged Navier-Stokes (PANS) closure is derived based on the k-kL (KSKL) model. The aim of this new model is to incorporate the desirable features of the KSKL model, compared to the k-ω shear stress transport model, into the PANS framework. These features include reduced eddy-viscosity levels, a lower dependency on the cell height at the wall, well-defined boundary conditions, and improved iterative convergence. As well as the new model derivation, the paper demonstrates that these desirable features are indeed maintained, for a range of modeled-to-total turbulence kinetic energy ratios (fk), and even for multiphase flow.