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Two-Dimensional Computational Simulation of Fluid-Solid Interaction in Tearing of a Membrane between two liquids with Different Molecular Properties and Pressures, Using SPH Method

Asadi, Hossein | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46993 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Taeibi Rahni, Mohammad; Javadi, Khodayar
  7. Abstract:
  8. Smoothed particle hydrodynamics (SPH) is a meshfree method, based on Lagrangian formulation of Navier-Stokes equations, in which fluid is discretized to particles. This method is suitable and gives much better results for problems in which other methods have severe difficulties, (e.g., tracking of particles, moving boundaries, and problems with large deformations and, physical discontinuity). No need to follow a regular geometric structure in solution process and simple adaptation and coupling with methods such as finite element, are the positive characteristics of this numerical method. In this work, a systematic study of the processes, which are part of a membrane failure in a three-dimensional channel (located between two fluids with different densities and pressures), are performed. This study was conducted in two separate parts. First, the membrane deformation was studied, applying a pressure difference to the membrane and next, the rupturing mechanism of the membrane was investigated for different pressures and different membrane thicknesses. Finally, a critical time, after which the membrane damage possibility approaches zero, was introduced. Also, according to the results, a classification of different types of membrane damage, (depending on their rupturing mechanism) was introduced
  9. Keywords:
  10. Smoothed Particle Hydrodynamics (SPH) ; Damage ; Fluid-Solid Interaction ; Meshless Method ; Different Membrane

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