computer simulation study of collective phenomena in dense suspensions of red blood cells under shear

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Computer Simulation Study Of Collective Phenomena In Dense Suspensions Of Red Blood Cells Under Shear

Author : Heinrich Krüger
ISBN : 9783834823755
Genre : Science
File Size : 39. 88 MB
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The rheology of dense red blood cell suspensions is investigated via computer simulations based on the lattice Boltzmann, the immersed boundary, and the finite element methods. The red blood cells are treated as extended and deformable particles immersed in the ambient fluid. In the first part of the work, the numerical model and strategies for stress evaluation are discussed. In the second part, the behavior of the suspensions in simple shear flow is studied for different volume fractions, particle deformabilities, and shear rates. Shear thinning behavior is recovered. The existence of a shear-induced transition from a tumbling to a tank-treading motion is demonstrated. The transition can be parameterized by a single quantity, namely the effective capillary number. It is the ratio of the suspension stress and the characteristic particle membrane stress. At the transition point, a strong increase in the orientational order of the red blood cells and a significant decrease of the particle diffusivity are observed. However, the average cell deformation shows no signature of the transition.

The Lattice Boltzmann Method

Author : Timm Krüger
ISBN : 9783319446493
Genre : Science
File Size : 74. 77 MB
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This book is an introduction to the theory, practice, and implementation of the Lattice Boltzmann (LB) method, a powerful computational fluid dynamics method that is steadily gaining attention due to its simplicity, scalability, extensibility, and simple handling of complex geometries. The book contains chapters on the method's background, fundamental theory, advanced extensions, and implementation. To aid beginners, the most essential paragraphs in each chapter are highlighted, and the introductory chapters on various LB topics are front-loaded with special "in a nutshell" sections that condense the chapter's most important practical results. Together, these sections can be used to quickly get up and running with the method. Exercises are integrated throughout the text, and frequently asked questions about the method are dealt with in a special section at the beginning. In the book itself and through its web page, readers can find example codes showing how the LB method can be implemented efficiently on a variety of hardware platforms, including multi-core processors, clusters, and graphics processing units. Students and scientists learning and using the LB method will appreciate the wealth of clearly presented and structured information in this volume.

Direct Numerical Simulations Of Gas Liquid Multiphase Flows

Author : Grétar Tryggvason
ISBN : 9781139496704
Genre : Computers
File Size : 44. 15 MB
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Accurately predicting the behaviour of multiphase flows is a problem of immense industrial and scientific interest. Modern computers can now study the dynamics in great detail and these simulations yield unprecedented insight. This book provides a comprehensive introduction to direct numerical simulations of multiphase flows for researchers and graduate students. After a brief overview of the context and history the authors review the governing equations. A particular emphasis is placed on the 'one-fluid' formulation where a single set of equations is used to describe the entire flow field and interface terms are included as singularity distributions. Several applications are discussed, showing how direct numerical simulations have helped researchers advance both our understanding and our ability to make predictions. The final chapter gives an overview of recent studies of flows with relatively complex physics, such as mass transfer and chemical reactions, solidification and boiling, and includes extensive references to current work.

The Interpretation Of Cultures

Author : Clifford Geertz
ISBN : 9780786725007
Genre : Social Science
File Size : 83. 67 MB
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In The Interpretation of Cultures, the most original anthropologist of his generation moved far beyond the traditional confines of his discipline to develop an important new concept of culture. This groundbreaking book, winner of the 1974 Sorokin Award of the American Sociological Association, helped define for an entire generation of anthropologists what their field is ultimately about.

Mechanics Of The Cell

Author : David H. Boal
ISBN : 0521796814
Genre : Science
File Size : 48. 61 MB
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A biological physics text for a multidisciplinary audience, exploring the architectural structure of the cell.

The Lattice Boltzmann Equation

Author : Sauro Succi
ISBN : 0198503989
Genre : Mathematics
File Size : 36. 77 MB
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In recent years, stylized forms of the Boltzmann equation, now going by the name of "Lattice Boltzmann equation" (LBE), have emerged, which relinquish most mathematical complexities of the true Boltzmann equation without sacrificing physical fidelity in the description of many situations involving complex fluid motion. This book provides the first detailed survey of LBE theory and its major applications to date. Accessible to a broad audience of scientists dealing with complex system dynamics, the book also portrays future developments in allied areas of science (material science, biology etc.) where fluid motion plays a distinguished role.

College Physics

Author : Paul Peter Urone
ISBN : 0534376886
Genre : Science
File Size : 61. 66 MB
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"From driving a car to launching a rocket, from whirling ice skaters to spinning neutron stars, Urone's College Physics, Second Edition guides students through the discovery of nature - its simplicity and unity - by examining a range of topics spanning the ordinary to the extraordinary." -- Page 4 of cover.

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