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Simulation of Exothermic and Insulated Materials Effect on Increasing Efficiency of feeder in Gray Cast Iron

Amiryavari, Payman | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41634 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Davami, Parviz; Varahram, Naser
  7. Abstract:
  8. The use of exothermic and insulated materials is one of the most effective methods in increasing feed efficiency. In order to model performance of these materials, we need for information in connection with thermo physical properties, interface resistances and way for releasing heat in exothermic and insulated materials. Due to lack of published information in this area, the purpose of this study is for increasing information in this area and especially in the heat release in these materials. In this investigation first, physical model governing this phenomenon was found. At this stage in order to Model of heat transfer from one dimensional transient heat conduction equation, discreted by finite volume method, that solved by fully explicit method, was used. Also in order to Model of heat transfer during solidification from equivalent specific heat method was used. In order to Model of heat released from exothermic reaction in exothermic and insulated materials, from exponential form of source term was used. Also in order to find constants of heat released relationship and interface thermal resistance between sand mold and exothermic and insulated materials, inverse heat transfer method was used. In order to solve of inverse heat transfer problem from mesh adaptive direct search method (MADS) was used. Then due to accuracy assessment of used method, the results of simulation with experimental test results were Compared. Comparison showed good agreement between simulation and experimental results
  9. Keywords:
  10. Riser ; Exothermic Materials ; Exponential Form of Heat Released ; Inverse Heat Transfer ; Mesh Adaptive Direct Search (MADS)Method ; Insulated Materials

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