

	Mechanics På svenska

Project

Numerical methods for the flow at multiple blade twin-wire forming of paper.

Research Area:

Fluid mechanics

Project Members:

Dahlkild, A. A.

Holmqvist, J.F.

Sponsor:

Faxén Laboratoriet

Project Description

The fundamental aspects of dewatering between two wires is to a great extent known, but presently not accurately quantified for dewatering over multiple blades in a series. Detailed knowledge of the involved mechanisms, e.g. wave propagation on free wires, facilitates controll of dewatering and straining of the fiber suspension, which in turn can be used for controll of flock distribution and fibre orientaion. The latter factors determine the quality of the paper.

Publications related to the project

Year	Title
2008	Consolidation of sheared, strongly flocculated suspensions AIChE Journal Vol. 54, No.4 924-939 (Published)
2006	A Flexible Approach for Modelling Flow in Multi-Component Blade Formers Nordic Pulp and paper research Journal Vol. 21, No.1 73-81 (Published)

Internal Reports related to the project

Year	Title	Document Type
2005	Mechanical Modelling of Blade Forming and Drainage of Flocculated Suspensions	Doctoral thesis
2002	Modelling of the Pressure Distributions in Twin-Wire Blade Formers	Licentiate thesis