Analysis of mobilisation and explosion problems in gas and dust mixtures

  1. JR García-Cascales 1
  2. F Vera García 1
  3. R Otón-Martínez 1
  4. A Bentaib
  5. N Meynet
  1. 1 Universidad Politécnica de Cartagena
    info

    Universidad Politécnica de Cartagena

    Cartagena, España

    ROR https://ror.org/02k5kx966

Actas:
23rd ICDERS: Irvine (U.S.A), del 24 al 29 de julio de 2011

Año de publicación: 2011

Tipo: Aportación congreso

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Resumen

Great effort has been done on the characterisation of multiphase problems over the years. Special attention has been paid to problems involving the mobilisation and explosion of gas and particle mixtures. This work describes the dense model implemented in DUST, a code developed by the Technical University of Cartagena, Spain and the Institute for Radioprotection and Nuclear Safety of France. It has been developed in the framework of the security of the international fusion reactor ITER. This model is based on a six-equation model which considers the effect of pressure on the solid phase by means of a compaction term. This is an Eulerian approach based on a finite volume approximation. The flux evaluation at the interfaces is carried out by means of numerical schemes extended to analyse these problems. All are approximate Riemann solvers which let us evaluate the flux accurately at each interface. The code is explicit and allows second order accuracy. This is obtained by means of variable extrapolation techniques (MUSCL approach). Some tests have been studied to analyse the behaviour of the model.