Abstract
By incorporating a viscous liquid force model into DEM simulations, the effect of liquid bridging between two tablets during a collision was studied. It was shown that when compared to the viscous force, the capillary force is several orders of magnitude smaller. In order to predict the capture of a falling tablet by the liquid bridge, it was necessary to adjust the limiting separation distance used in the viscous force model. Comparison of experimental results with the simulations, using oils with viscosities in the range of 100–1,000 cP, showed that there was a linear relationship between the limiting separation distance and the viscosity of the silicone oils. This viscosity-dependent separation distance varied in the range of 1–6 mm.
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