Abstract
Two two-equation turbulence closure models are implemented in a three dimensional (3D) hydrodynamic model (Adaptive Hydraulics; ADH). The implementation is in the form of a modular library that can in effect be called from any 3D hydrodynamic model. The models incorporated into this library consist of the two equation MellorYamada level 2.5 and the κ−e model. The two equation models have the capability to represent several real world phenomenons such as density stratification, flow separation and suspended sediment transport. The presence of multiple turbulence closure models, of varied complexity from one equation to two equations, allows for the selection of a model best suited for the problem at hand. The implementation of this library was tested using a vertical backstep problem.
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