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urea injection

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Old   June 17, 2016, 18:29
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I have to simulate urea injection in biomass firing systems. I am using v15.

In some old tutorial fluent recommends using the wet solid approach, that is to declare a urea-water solution particles.
I have tried this approach and i see my particles, I see how water evaporates and i see the urea particles. The problem is that the temperature of the urea particle reaches 1800 K. And I do not see the diameter of the particle going to zero (like would happen if i have pure water).

I have tried different rates for the devolatilisation of solid urea, to no succes.

I have read in the literature of an other method: to consider the urea-water solution as a multicompent partciles. And there are many succsefull data published in the literature with Fluent. But they dont give info on what exactelly they have done.

Has anybody been successful in modellling SNCR with urea solution in Fluent?
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