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Physics of Transitional Shear Flows: Instability and Laminar-Turbulent Transition in Incompressible Near-Wall Shear Layers (Fluid Mechanics and Its Applications)
Starting from fundamentals of classical stability theory, an overview is given of the transition phenomena in subsonic, wall-bounded shear flows. At first, the consideration focuses on elementary small-amplitude velocity perturbations of laminar shear layers, i.e. instability waves, in the simplest canonical configurations of a plane channel flow and a flat-plate boundary layer. Then the linear stability problem is expanded to include the effects of pressure gradients, flow curvature, boundary-layer separation, wall compliance, etc. related to applications. Beyond the amplification of instability waves is the non-modal growth of local stationary and non-stationary shear flow perturbations which are discussed as well. The volume continues with the key aspect of the transition process, that is, receptivity of convectively unstable shear layers to external perturbations, summarizing main paths of the excitation of laminar flow disturbances. The remainder of the book addresses the instability phenomena found at late stages of transition. These include secondary instabilities and nonlinear features of boundary-layer perturbations that lead to the final breakdown to turbulence. Thus, the reader is provided with a step-by-step approach that covers the milestones and recent advances in the laminar-turbulent transition. Special aspects of instability and transition are discussed through the book and are intended for research scientists, while the main target of the book is the student in the fundamentals of fluid mechanics. Computational guides, recommended exercises, and PowerPoint multimedia notes based on results of real scientific experiments supplement the monograph. These are especially helpful for the neophyte to obtain a solid foundation in hydrodynamic stability. To access the supplementary material go to extras.springer.com and type in the ISBN for this volume.82% (13)
concrete core formwork. the reinforced concrete core serves as the main lateral force resisting system in most low rise buildings in Jordan, ( usually the staircase in most buildings), although it gives lower torsional resistance (polar moment of inertia) than that resulted when the shear walls are distributed along the building exterior parameter, but still it is widely used for low rise buildings. the location of the core controls the center of rigidity of the floor, when this location doesn't coincide with the floor center of mass, torsional stresses are induced, which is an important point to take into account when designing the structural elements.Meet the Trumps
Donald John Trump (born June 14, 1946) is an American business magnate, socialite, author and television personality. He is the Chairman and CEO of the Trump Organization, a US-based real-estate developer. Trump Tower is a 58-story skyscraper in New York City located at 725 Fifth Avenue, at the corner of East 56th Street. Designed by Der Scutt of Swanke, Hayden Connell, it was completed on the 30th of November 1983. The tower is a reinforced concrete, shear-wall/core structure and was the tallest structure of this type in New York City when completed.
A Complete Guide to Solving Lateral Load Path ProblemsRelated topics:
The Analysis of Irregular Shaped Structures: Diaphragms and Shear Walls explains how to calculate the forces to be transferred across multiple discontinuities and reflect the design requirements on construction documents. Step-by-step examples offer progressive coverage, from basic to very advanced illustrations of load paths in complicated structures. The book is based on the 2009 International Building Code, ASCE 7-05, the 2005 Edition of the National Design Specification for Wood Construction, and the 2008 Edition of the Special Design Provisions for Wind and Seismic (SDPWS-08).
Code sections and analysis
Diaphragms with end horizontal offsets
Diaphragms with intermediate offsets
Diaphragms with openings
Open front and cantilever diaphragms
Diaphragms with vertical offsets
Complex diaphragms with combined openings and offsets
Standard shear walls
Shear walls with openings
Discontinous shear walls
Horizontally offset shear walls
The portal frame
Rigid moment-resisting frame walls--the frame method of analysis
tweezerman thinning shears
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