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Effect of multiphase fluid and functionally graded density fluid on the stability of spinning partially-filled shells

Sahebnasagh, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijmecsci.2018.02.039
  3. Publisher: Elsevier Ltd , 2018
  4. Abstract:
  5. The effect of a multiphase fluid, including an arbitrary number of liquid phases, and a functionally graded density fluid on the stability of rotating partially-filled cylindrical shells is investigated. The first-order shear shell theory is used for modeling the structural dynamics of the shell and a 2D model is introduced based on the Navier–Stokes equations, for fluid motion. The multiphase and the functionally graded density fluids are arranged according to the mass density in a steady state condition due to centrifugal forces. Using the boundary conditions between liquid phases and the boundary conditions of the fluid on the cylinder wall, the coupled fluid-structure system model is obtained. This coupled fluid-structure model is then used to specify the critical velocity of the system. Due to the extreme complexity of the characteristic equation of a rotating shell partially filled with a functionally graded density fluid, a numerical technique is devised to analyze the stability of the coupled system by using a multiphase fluid. © 2018 Elsevier Ltd
  6. Keywords:
  7. Functionally graded density fluid ; Multiphase fluid ; Boundary conditions ; Convergence of numerical methods ; Cylinders (shapes) ; Multiphase flow ; Navier Stokes equations ; Shells (structures) ; Stability ; Structural dynamics ; Characteristic equation ; Flow induced vibrations ; Fluid-structure model ; Fluid-structure systems ; Functionally graded ; Multiphase fluids ; Numerical techniques ; Steady-state condition ; Fluid structure interaction
  8. Source: International Journal of Mechanical Sciences ; Volume 140 , 2018 , Pages 109-118 ; 00207403 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0020740317318167?via%3Dihub