Author: Chien-Bang WangPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 810
Book Description
Pipe Flow of Dilute Polymer Solutions
Author: Chien-Bang WangPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 810
Book Description
Unsteady Flow of Dilute Aqueous Polymer Solutions in Pipe Networks
Author: Henry C. JacksonPublisher:
ISBN:
Category : Frictional resistance (Hydrodynamics)
Languages : en
Pages : 154
Book Description
Flow of Dilute Polymer Solutions about Circular Cylinders
Author: Turgut SarpkayaPublisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 170
Book Description
Flow of aqueous solutions of Polyox WSR-301, with concentrations of 1.0 to 200 wppm, past circular cylinders was investigated in the drag-transition region of Reynolds numbers. Drag force, pressure distribution, and separation angle were measured on cylinders with diameters from 1/4 to 1-1/2 inch. Lift and drag forces acting on a NACA-0024 hydrofoil-model were also measured. The polymer additive was found to alter only those force coefficients which have a Reynolds-number transition region. Two distinct types of cylinder drag transition were observed: (1) At high concentrations, transition from sub-critical to a transcritical flow occurred at the same free-stream velocity independent of body diameter; and (2) at low concentrations and/or molecular weights, tripping from a sub-critical to a super-critical flow occurred at a well defined flow condition which was a function of free-stream velocity, body diameter, and turbulent pipe-flow friction reduction. In all cases, transition occurred earlier than that in the pure solvent. The polymer had a de-stabilizing effect on the boundary-layer flow.
Applied Mechanics Reviews
Author: Viscous Drag Reduction
Author: C. Sinclair WellsPublisher: Springer
ISBN: 1489955798
Category : Technology & Engineering
Languages : en
Pages : 497
Book Description
NBS Special Publication
Author: Publisher:
ISBN:
Category : Weights and measures
Languages : en
Pages : 802
Book Description
Short and Long Chains at Interfaces
Author: Jean DaillantPublisher: Atlantica Séguier Frontières
ISBN: 9782863321775
Category : Science
Languages : en
Pages : 414
Book Description
Polymer Physics
Author: Leszek A. UtrackiPublisher: John Wiley & Sons
ISBN: 1118062957
Category : Technology & Engineering
Languages : en
Pages : 677
Book Description
Providing a comprehensive review of the state-of-the-art advanced research in the field, Polymer Physics explores the interrelationships among polymer structure, morphology, and physical and mechanical behavior. Featuring contributions from renowned experts, the book covers the basics of important areas in polymer physics while projecting into the future, making it a valuable resource for students and chemists, chemical engineers, materials scientists, and polymer scientists as well as professionals in related industries.
Modeling and Simulation in Polymers
Author: Purushottam D. GujratiPublisher: John Wiley & Sons
ISBN: 9783527630264
Category : Technology & Engineering
Languages : en
Pages : 564
Book Description
Filling a gap in the literature and all set to become the standard in this field, this monograph begins with a look at computational viscoelastic fluid mechanics and studies of turbulent flows of dilute polymer solutions. It then goes on discuss simulations of nanocomposites, polymerization kinetics, computational approaches for polymers and modeling polyelectrolytes. Further sections deal with tire optimization, irreversible phenomena in polymers, the hydrodynamics of artificial and bacterial flagella as well as modeling and simulation in liquid crystals. The result is invaluable reading for polymer and theoretical chemists, chemists in industry, materials scientists and plastics technologists.
Structure of Turbulence and Drag Reduction
Author: Albert GyrPublisher: Springer Science & Business Media
ISBN: 3642509711
Category : Science
Languages : en
Pages : 617
Book Description
In 1976 a similar titled IUTAM Symposium (Structure of Turbulence and Drag Reduction) was held in Washington . However, the progress made during the last thirteen years as weil as the much promising current research desired a second one this year. In Washington drag reduction by additives and by direct manipulation of the walls (compliant walls and heated surfaces) were discussed. In the meantime it became evident that drag reduction also occurs when turbulence is influenced by geometrical means, e.g. by influencing the pressure distribution by the shape of the body (airfoils) or by the introduction of streamwise perturbances on a body (riblets). In the recent years turbulence research has seen increasing attention being focused on the investigation of coherent structures, mainly in Newtonian fluids. We all know that these structures are a significant feature of turbulent flows, playing an important role in the energy balance in such flows. However their place in turbulence theories as weil as the factors influencing their development are still poorly understood. Consequently, the investigation of phenomena in which the properties of coherent structures are alte red provides a promising means of improving our understanding of turbulent flows in general.