1. FLUID - FIBER INTERACTION IN HYDRO-CYCLONES
UBC
Mechanical Engineering CFD Modeling Group
FLUID - FIBER INTERACTION IN HYDRO-CYCLONES
MODEL
Modified k- model for highly curved turbulent flows
Finite volume discretization using a generalized curvilinear system
Particle tracking through explicit time marching based on force balance
Influence of the particle diameter on fractionation
Dr. Martha Salcudean
Weyerhaeuser Industrial Research Chair
Fellow C.S.M.E., F.C.A.A., F.R.S.C.
Zhengbing Bian Paul Nowak
Eric Bibeau Mohammad Shariati
Suqin Dong Emil Statie
Xioasi Feng David Stropky
Mike Georgallis Zhu Zhi Xiao
Pingfan He Jerry Yuan
Lu Hua Kegang Zhang
OBJECTIVES
Compute 3D flow in hydro-cyclones
Improve mathematical models of swirling flows
Develop mathematical models to compute fiber trajectories in complex flows
Model separation and fractionation according to fiber properties in hydro-cyclones
Dr. Ian Gartshore
Fellow C.A.S.I.
BENEFITS
Increase operating efficiency for hydro-cyclones
Optimize the hydro-cyclones design
Evaluate the influence on fractionation of fiber wet density, fiber diameter, fiber length, and fiber specific surface
Evaluate the influence of the fluid temperature on fractionation
Predict the fractionation performance of a hydro-cyclone for given fiber properties
FUNDING
- FRBC
- Network for
Mechanical Pulping
- Weyerhaeuser Paper
Company
Other
Institutions
Government
Industry
TECHNOLOGY TRANSFER
License
agreement
Service
agreements
Consulting
Custom
PSL
The difference between particles carried over at t = 20°C and t = 45°C.
The yellow grid represents particles carried over at t = 20°C
Separation on diameter and length as function of the particle density
END-USERS
Pulp mills requiring high efficiency for fiber cleaning and fractionation
Hydro-cyclone manufacturers
Influence of the particle length on fractionation
(a) Velocity vectors, (b) pressure contours, and (c) swirl velocity contours in a hydrocyclone
Influence of the particle density on fractionation