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The flow dynamics of the dilution water that adjusts the consistency of the fluid in a hydrodynamic headbox was studied by performing computational fluid dynamics (CFD) simulations. A standard k-e turbulence model was used in conjunction with a study of the mass diffusion in the turbulent flow based on the species transport approach. The simulation results show that when dilution water was injected at different sites along the step diffusion tube, the water content at the outlet of the slice channel conformed to a standard normal distribution. Keywords-CFD simulation; hydraulic headbox; consistency distribution

A CFD Model of a Headbox for Injecting Dilution Water at Different Locations Along a Step Diffusion Tube