3D Simulation of Layer Mixing in a Three-Layer Stratified Forming Headbox, 2004 Paper Summit, Spring Technical & International Environmental Conference, (including Papermakers; Process Control, Electrical & Information; Product & Product Quality)
We used a commercially available software called FLUENT to simulate and visualize turbulence in a three-layered
stratified headbox of a paper machine in a three dimensional space. The three dimensional information, in terms of
colorful contours of velocity profiles, turbulent kinetic energy, and energy dissipation rates, is used to optimize the
vane thickness, nozzle angle, and vane length. The results show that it is possible to reduce the vane thickness to
decrease the turbulence intensity at the area of layer mixing and to increase the angle of the nozzle to compensate
for the turbulence intensity reduction, either by increasing the turbulence area or the area of layer mixing. In other
words, we may control the turbulence intensity and layer mixing areas by adjusting the vane thickness and nozzle
angle.
3D Simulation of Layer Mixing in a Three-Layer Stratified Forming Headbox, 2004 Paper Summit, Spring
