DPM Breakup Model
Hi everybody!
I am trying to model the transient injection of gas that causes the dispersion of solid particles whose initial velocity is 0 m/s. The gas will lift the solid particles and will reduce its pressure and velocity during the dispersion process. The particles are fragmented dutring the dispersion process. So I included the breakup Wave model. When I don't use the breakup model the convergence is very good, but, if I activate it the calculation diverges after 9 ms. However, it is necessary to include the particles fragmentation in the simulation. This is some information about my simulation: Boundary conditions: Velocity inlet with varying profile and pressure outlet with fixed value Fluent V13 Turbulence model: RANS RSM and LES Iterations/Time step: 40 Particle size: Between 26 and 86 µm (600000 particles aprox with Rosin-Rammler distribution) Number of mesh elements: 483188 Minimum element size: 8.5e-4 m Maximum element size: 3.0e-3 m fluent time step: 1 ms Solid particles time step: 0.01 µs Please, give me your comments and suggestions Carlos |
Hello Carlos,
Did you try to set a lower Time Steps and a higher number of iterations/time step? Regards lucas |
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