Dispersion Models for Pulp Fiber in a Dry Forming Process, 1998 Engineering Conference Proceedings

A model for the mixing and dispersion of wood pulp fibers in a dry forming head are described and tested with experimental data for a trajectory dry forming head. The model is based on the dispersion of a scalar species in a confined duct flow. The pulp and air feed streams are assumed to originate from an effective source (satisfying conservation of mass) in the duct leading to a final uniform concentration far downstream. This type of analysis gives a single dispersion coefficient describing the mixing behavior for the process. The model is applied to experimental results for a scalar and pulp fiber concentration field in a forming head as measured by a laser light- scatter technique. This type of analysis produces a single response describing the behavior of the system at a chosen flow condition and hence serves as a good procedure to use, for example, with experimental design techniques.

Author: Ng, S. Y. M., Grandmaison, E. W.
Dispersion Models for Pulp Fiber in a Dry Forming Process, 1
Dispersion Models for Pulp Fiber in a Dry Forming Process, 1998 Engineering Conference Proceedings
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