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Numerical simulation of three-dimensional interfacial flows

Jahanbakhsh, E ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1108/09615530710739167
  3. Publisher: 2007
  4. Abstract:
  5. Purpose - This study aims to present compatible computational fluid dynamics procedure for calculation of incompressible three-dimensional time-dependent flow with complicated free surface deformation. A computer software is developed and validated using a variety of academic test cases. Design/methodology/approach - Two fluids are modeled as a single continuum with a fluid property jump at the interface by solving a scalar transport equation for volume fraction. In conjunction, the conservation equations for mass and momentum are solved using fractional step method. Here, a finite volume discretisation and colocated arrangement are used. Findings - The developed code results in accurate simulation of interfacial flows, e.g. Rayleigh-Taylor instability, sloshing and dambreaking problems. All results are in good concordance with experimental data especially when there are two phases with high density ratio. Research limitations/implications - Turbulence, which has great importance in a wide variety of real world phenomena, is not considered in the present formulation and left for future researches. Originality/value - Here, an integrated numerical simulation for transient interfacial flows is presented. In this way, the pressure integral term in Navier-Stokes equation is discretised based on a newly developed interpolation which results in non-oscillative velocity field especially in free surface. © Emerald Group Publishing Limited
  6. Keywords:
  7. Finite volume discretisation ; Interfacial flows ; Time-dependent flow ; Computer simulation ; Computer software ; Density measurement (specific gravity) ; Flow measurement ; Numerical control systems ; Numerical methods ; Volume fraction
  8. Source: International Journal of Numerical Methods for Heat and Fluid Flow ; Volume 17, Issue 4 , 2007 , Pages 384-404 ; 09615539 (ISSN)
  9. URL: https://www.emerald.com/insight/content/doi/10.1108/09615530710739167/full/html