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Comparing sloshing phenomena in a rectangular container with and without a porous medium using explicit nonlinear 2-D BEM-FDM

Abbaspour, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. The sloshing phenomena in a partially filled tank can affect its stability. Modifications of tank instability due to the movement of the tank carrier, are key design points for the stability of a carrier. Even though the sloshing phenomenon has already been investigated using the BEM-FDM technique, the research in this paper covers this phenomenon in a porous media, which is new in 2-D coordinates. For this purpose, a Laplace equation has been used for potential flow, and kinematic and dynamic boundary conditions have been applied to the free surface. Also, a formulation has been developed for a free surface in porous media. BEM has been used for solving the governing equation and FDM discretization has been used for kinematic and dynamic free surface boundary conditions and for time marching. Theoretical results have been verified with experimental data collected in this study. The results show an acceptable agreement between theory and experiment, and the rapid damping property in the sloshing phenomena by using porous material in the water, as expected. Also these results illustrate that the derived formula in this research are applicable and true
  5. Keywords:
  6. Boundary element method (BEM) ; Finite difference method (FDM) ; Liquid free surface ; Porous media ; Potential flow ; Damping property ; Design points ; Discretizations ; Dynamic boundary conditions ; Dynamic free surfaces ; Experimental data ; Free surfaces ; Governing equations ; Liquid free surfaces ; Porous medium ; Rectangular containers ; Theoretical result ; Time marching ; Boundary conditions ; Frequency division multiplexing ; Laplace equation ; Liquids ; Porous materials ; Surfaces ; Two dimensional ; Comparative study ; Damping ; Flow stability ; Kinematics ; Laplace transform ; Nonlinearity
  7. Source: Scientia Iranica ; Volume 17, Issue 2 B , 2010 , Pages 93-101 ; 10263098 (ISSN)
  8. URL: http://en.journals.sid.ir/ViewPaper.aspx?ID=171788