Hi I am working on the simulation of wood gasification, my dpm particles are injected from the inlet of my flow domain, owing to the increase of temperature, thermochemical reactions that convert wood into products are activated.
I m running a steady simulation, at high temperature (1800 K), my temperature contour converges rather easily, whereas my products molar area weighted average at the outlet are oscillating each dpm iteration, I tried to descrease the URF for dpm sources, and density but it doesn't really seem to work, finally, when my URF of dpm sources is great >0.3, temperatures reach 5000K which is not physical.
Do you have please any suggestions ?
Looking forward to reading to you soon.
Weight average values should balance. Area weighting is dependent upon concentrations and particle sizes. Gasification is not a stable microsystem with so many parameters and conditions that affect the thermo and kinetics. The best you can usually hope for is a stochastic response that is a bit more stable in mean and std deviation.
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