Flow of Viscoelastic Fluids Through Banks of Cylinders
Author: William H. Hartt
Publisher:
Published: 1995
Total Pages: 430
ISBN-13:
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Author: William H. Hartt
Publisher:
Published: 1995
Total Pages: 430
ISBN-13:
DOWNLOAD EBOOKAuthor: Robert G Owens
Publisher: World Scientific
Published: 2002-05-29
Total Pages: 437
ISBN-13: 1783261951
DOWNLOAD EBOOKModern day high-performance computers are making available to 21st-century scientists solutions to rheological flow problems of ever-increasing complexity. Computational rheology is a fast-moving subject — problems which only 10 years ago were intractable, such as 3D transient flows of polymeric liquids, non-isothermal non-Newtonian flows or flows of highly elastic liquids through complex geometries, are now being tackled owing to the availability of parallel computers, adaptive methods and advances in constitutive modelling.Computational Rheology traces the development of numerical methods for non-Newtonian flows from the late 1960's to the present day. It begins with broad coverage of non-Newtonian fluids, including their mathematical modelling and analysis, before specific computational techniques are discussed. The application of these techniques to some important rheological flow problems of academic and industrial interest is then treated in a detailed and up-to-date exposition. Finally, the reader is kept abreast of topics at the cutting edge of research in computational applied mathematics, such as adaptivity and stochastic partial differential equations.All the topics in this book are dealt with from an elementary level and this makes the text suitable for advanced undergraduate and graduate students, as well as experienced researchers from both the academic and industrial communities.
Author: Rakesh K. Gupta
Publisher: CRC Press
Published: 2000-06-14
Total Pages: 409
ISBN-13: 1482273705
DOWNLOAD EBOOKAn analysis of polymer and composite rheology. This second edition covers flow properties of thermoplastic and thermoset polymers, and general principles and applications of all phases of polymer rheology, with new chapters on the rheology of particulate and fibre composites. It also includes new and expanded detail on polymer blends and emulsions,
Author: Bhalchandra Y. Ballal
Publisher:
Published: 1974
Total Pages: 708
ISBN-13:
DOWNLOAD EBOOKAuthor: Christopher Thomas Hill
Publisher:
Published: 1969
Total Pages: 464
ISBN-13:
DOWNLOAD EBOOKAuthor: Yuen Philip Hoang
Publisher:
Published: 2018
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKThis thesis is a study on creeping flow of an ideal viscoelastic fluid through square arrays of cylinders to predict the pressure drop. Numerical simulations were completed for arrays of three different solid volume fractions: 2.5%, 5%, and 10%. Substantial amounts of elastic stresses were found beyond a critical flow rate, up to six times that of the highest Newtonian stresses. An increase in pressure drop caused by elasticity was found, in contrast to many other numerical studies which find a decrease or no change. This pressure drop was, however, considerably smaller than what was found experimentally by James, Yip, Currie (2012). The absence of elastic extensional stresses downstream of the cylinder for the 10% array supports the argument that the increase in pressure drop is caused by elastic stresses due to shear.
Author: John Michael Kramer
Publisher:
Published: 1969
Total Pages: 278
ISBN-13:
DOWNLOAD EBOOKAuthor: Ron Darby
Publisher:
Published: 1976
Total Pages: 664
ISBN-13:
DOWNLOAD EBOOKAuthor: Daniel D. Joseph
Publisher: Springer Science & Business Media
Published: 2013-11-27
Total Pages: 772
ISBN-13: 1461244625
DOWNLOAD EBOOKThis book is about two special topics in rheological fluid mechanics: the elasticity of liquids and asymptotic theories of constitutive models. The major emphasis of the book is on the mathematical and physical consequences of the elasticity of liquids; seventeen of twenty chapters are devoted to this. Constitutive models which are instantaneously elastic can lead to some hyperbolicity in the dynamics of flow, waves of vorticity into rest (known as shear waves), to shock waves of vorticity or velocity, to steady flows of transonic type or to short wave instabilities which lead to ill-posed problems. Other kinds of models, with small Newtonian viscosities, give rise to perturbed instantaneous elasticity, associated with smoothing of discontinuities as in gas dynamics. There is no doubt that liquids will respond like elastic solids to impulses which are very rapid compared to the time it takes for the molecular order associated with short range forces in the liquid, to relax. After this, all liquids look viscous with signals propagating by diffusion rather than by waves. For small molecules this time of relaxation is estimated as lQ-13 to 10-10 seconds depending on the fluids. Waves associated with such liquids move with speeds of 1 QS cm/s, or even faster. For engineering applications the instantaneous elasticity of these fluids is of little interest; the practical dynamics is governed by diffusion, ·say, by the Navier-Stokes equations. On the other hand, there are other liquids which are known to have much longer times of relaxation.
Author: Joseph P. Nirschl
Publisher:
Published: 1972
Total Pages: 526
ISBN-13:
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