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Numerical Study of Effective Factors in Polyurethane Injection in Porous Media

Bazkhane, Saed | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 46732 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Sadr Hosseini, Hani; Afshin, Hossein
  7. Abstract:
  8. Porous medium is a material consisting of a solid matrix with an interconnected void. A polymer is a large molecule composed of many repeated subunits, known as monomers; Polyurethane is a type of polymer which has many uses. The aim of this research project is to investigate the effective factors in polyurethane polymer injection and the behavior of this material during the foaming in cavities with different soil porosities (0.15 < φ < 0.4). Parameters such as thermal boundary conditions and the soil material that could be effective in solidification of polyurethane are analyzed, numerically using FLUENT software. A simplified model for foaming is presented in this study which can be used instead of the complicated foaming simulations. Validations of this model with literature prove its reliability and give us this opportunity to replace the difficult models by this simplified one to study the liquid polyurethane behavior just before solidification. This model is inspired from the traveling heater method of crystallization. Besides, the heat produced during the reaction is considered as a heat generation term (a function of distance from the solid/liquid interface) in the energy equation. Various distributions of the heat generation inside the geometry have been considered and the most appropriate one has been chosen in the modeling
  9. Keywords:
  10. Porous Media ; Polyurethane ; Solidification ; Crystallization ; Foaming

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