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Comparison of Turbulence Models for Simulating Flow in Waterjets
Xian Luo
Brenden Epps
Chryssostomos Chryssostomidis
George Karniadakis
出版
MIT Sea Grant College Program
, 2011
URL
http://books.google.com.hk/books?id=_GSyswEACAAJ&hl=&source=gbs_api
註釋
We have developed a fast numerical algorithm for simulating flows in complex moving domains. The new hybid smoothed profile/spectral element method exhibits high-order accuracy as well as great computational efficiency as it removes the tyranny of mesh generation. Here we extend this work by incorporating a variational multiscale large eddy formulation for modeling the subgrid turbulent scales. We present verification and validation studies of the combined method and compare different turbulence mdoeling methodologies. Subsequently, we apply it to study laminar, transitional and turbulent flows in an axial-flow waterjet propulsion system (ONF AxWJ-1). The robustness and efficiency of our methods enable parametric studies of many cases, which may aid greatly in the early stages of design and evaluation of such propulsion systems.
