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Development of a VoF-fractional step solver for floating body motion simulation

Panahi, R ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1016/j.apor.2006.08.004
  3. Publisher: 2006
  4. Abstract:
  5. Numerical simulation of floating or submerged body motions is presented based on a Volume of Fluid (VoF)-fractional step coupling. Solving a scalar transport equation for volume fraction of two phases results in a single continuum with a fluid property jump at the interface. In addition, velocity and pressure fields are coupled using the fractional step method. Based on integration of stresses over a body, acting forces and moments are calculated. Using the strategy of non-orthogonal body-attached mesh and calculation of motions in each time step result in time history of hydrodynamic motions. To verify the accuracy of the numerical procedure in simulation of two-phase flow, sloshing and dam breaking with obstacle problems are investigated. Besides, motions simulation strategy is evaluated by using a cylinder water entry test case. To demonstrate the capability of the simulation, barge resistance is calculated in two cases of fixed and free motion (2-DoF). All of the results are in good concordance with experimental data. The present method can be extended for full nonlinear motion of ships in waves. © 2006 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Computer simulation ; Integration ; Liquid sloshing ; Stresses ; Volume fraction ; Fractional step ; Numerical hydrodynamics ; Ship motion ; Volume of fluid ; Fluid dynamics ; Interfaces (materials) ; Computational fluid dynamics ; Hydrodynamics ; Pressure field ; Two phase flow ; Velocity profile
  8. Source: Applied Ocean Research ; Volume 28, Issue 3 , 2006 , Pages 171-181 ; 01411187 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0141118706000812