마찰저항감소를 위한 난류유동의 DNS/LES 해석기술의 개발
Development of Numerical Tool for the DNS/LES of Turbulent Flow for FrictionalDrag Reduction
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Abstract
The friction drag reduction of a ship is of prime importance for the design and production of high-valued/high-tech. ship. Thus, this study carried out the development of reliable numerical tools to identify the friction drag reduction mechanism for turbulent boundary layer on the ship surface and to deduce the optimum reduction technique by numerical experiment. The developed LES and DNS numerical tools were applied to simulate the turbulent channel flow. These results were very well matched with previous results not only qualitatively but also quantitatively. The parallelization using MPI (Message Passing Interface) technique implemented in the developed code to speed up the simulation and to obtain the accurate results from the fine grid system was testified its computational efficiency.
참고문헌 (8)
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