solid-wall restitution coefficient boundary condition

    • reza1374

      the better value for restitution coefficient for solid-wall in hydrodynamic gas-solid bubbling fluidized bed?can i assming near one (elastic) for better result example 0.9 or 0.95 or 0.99?or near zero? in the article not mentioned. 

      if not mentioned in article, can i assume granular flux is zero?

    • DrAmine
      Ansys Employee

      If nothing is mentioned I would keep it as default so elastic. Generally it will be a function of the impact angle which depends on the surface at impact and particle surface properties. In general tangential coefficient is lower at higher angle but remains higher than normal.

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