Author: National Research Council of Canada. Division of Mechanical Engineering. Hydraulics LaboratoryPublisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
Laminar Flow of Dilute Fibre Suspensions
Author: National Research Council of Canada. Division of Mechanical Engineering. Hydraulics LaboratoryPublisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
Flow of Dilute Fiber Suspensions
Author: Massachusetts Institute of Technology. Hydrodynamics LaboratoryPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 690
Book Description
Dilute Fiber Suspensions in Laminar and Turbulent Flow
Author: George BugliarelloThe Effects of Fibers on Velocity Distribution, Turbulence and Flow Resistance of Dilute Suspensions
Author: James W. DailyPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 138
Book Description
The Orientation State of Semi-dilute Rigid Fibre Suspensions in a Linearly Contracting Channel
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This work investigates the effects of long range hydrodynamic fibre-fibre interactions on the orientation state of a semi-dilute, rigid fibre suspension flowing through a linear contracting channel under laminar flow conditions. The effects of fibre-fibre interactions are modeled mathematically, the governing equations solved numerically and the predicted results compared with experimental observations. The theoretical model is based on the assumption that the orientation state of the suspension can be completely described by a probability distribution function and that fibre-fibre interactions are random in nature, thus giving rise to a diffusion-type process. The orientation distribution evolves spatially according to a Fokker-Plank type equation using closure equations for the rotary diffusion coefficient advanced by either (i) Folgar and Tucker (J. Reinforced Plast. Comp. 3 98- 19 1984) or (ii) Koch (Phys. Fluids 7(8) 2086- 088 1995). Each of these two closure models for the rotary diffusion coefficient contains an unknown empirical constant that must be determined from experiments. These were fit to experimental data along the central streamline of the contraction as a function of fibre concentration. The diffusion coefficient was found to first increase with increasing suspension concentration up to a maximum, and then decrease with concentration above this point. This non-monotonic behavior was attributed to fibre flocculation, a mechanism not considered in the relationships for the rotary diffusion coefficient. The theoretical model is then extended to predict fibre orientation over the entire plane of the contraction and the two-way momentum coupling between the fluid and fibre phases were investigated numerically. The results show that the structure of the flow field within the contraction is significantly altered when the fibre phase is considered, demonstrating the non-negligible effect of the momentum exchange between the two phases. Comparison is made.
Flow of Dilute Fiber Suspensions
Author: The Characteristics of Flow with Dilute Fiber Suspensions
Author: James W. DailyPublisher:
ISBN:
Category : Fibers
Languages : en
Pages : 38
Book Description
Flow of Dilute Fiber Suspensions
Author: A. A. RobertsonTurbulent Tube Flow of Dilute Fiber Suspensions
Author: Truman Leo SeelyPublisher:
ISBN:
Category : Fibers
Languages : en
Pages : 127
Book Description
Author: J. W. Daily