Modeling of Suspension Flows in Coating Dies
نویسندگان
چکیده
Coating of dispersions or suspensions of particles in a fluid is very common in the manufacturing of functional materials. Commonly, a uniform distribution of the suspended phase is required, but, in practice, agglomerates of the suspended particles appear in the final product. It has been shown experimentally that agglomeration takes place as the dispersion flows inside the coating die, before being deposited on the substrate, and that altering the composition of the dispersion and/or the flow conditions can prevent agglomeration. Experimental observations are often limited by the small size of the process and the particles, so theoretical modeling is essential in understanding the agglomeration mechanisms and finding ways of avoiding agglomeration. In this work, theoretical modeling of the flow of the suspension is undertaken by the Discrete Element Method (DEM).
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