Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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APPLICATION OF AN IMMERSED BOUNDARY METHOD TO SIMULATING FLOW AROUND TWO NEIGHBORING UNDERWATER VEHICLES IN PROXIMITY

인접한 두 수중운동체 주위의 유동 해석을 위한 가상경계법의 적용

  • Lee, K. (Dept. of Mechanical Engineering, Inha Univ.) ;
  • Yang, K.S. (Dept. of Mechanical Engineering, Inha Univ.)
  • 이경준 (인하대학교 기계공학과) ;
  • 양경수 (인하대학교 기계공학과)
  • Received : 2012.10.02
  • Accepted : 2013.02.28
  • Published : 2013.03.31
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Abstract

Analysis of fluid-structure interaction for two nearby underwater vehicles immersed in the sea is quite challenging because simulation of flow around them is very difficult due to the complexity of underwater vehicle shapes. The conventional approach using body-fitted or unstructured grids demands much time in dynamic grid generation, and yields slow convergence of solution. Since an analysis of fluid-structure interaction must be based on accurate simulation results, a more efficient way of simulating flow around underwater vehicles, without sacrificing accuracy, is desirable. An immersed boundary method facilitates implementation of complicated underwater-vehicle shapes on a Cartesian grid system. An LES modeling is also incorporated to resolve turbulent eddies. In this paper, we will demonstrate the effectiveness of the immersed boundary method we adopted, by presenting the simulation results on the flow around a modeled high-speed underwater vehicle interacting with a modeled low-speed one.

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References

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