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Residence Time Distribution
Residence Time Distribution

application of infinite-element calculations for consolidating a
application of infinite-element calculations for consolidating a

... interpolation provides the terms of order 1/r, 1/r2 and, when the solution variable is a stress-like variable (such as the pore liquid pressure in an analysis of the flow through a porous medium), also 1/r3. The far-field behavior in many common cases, such as a point load on a half-space, is thereb ...
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ENVIRONMENTAL FACTORS

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Fundamentals of ultrasound - ASTL
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Laser Beam Welding
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... Welding (LBW) is a fusion joining process that produces coalescence of materials with the heat obtained from a concentrated beam of coherent, monochromatic light impinging on the joint to be welded. In the LBM process, the laser beam is directed by flat optical elements, such as mirrors and then foc ...
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... acceleration frames produce inertial forces (general fact in mechanics) Eulerian velocities are different at each point in the fluid. typically, these inertial forces appear when one averages the turbulent variations in fluid velocity about a mean flow, or when waves produce fluid motions. In short: ...
High-Performance Thermal Interface Technology Overview
High-Performance Thermal Interface Technology Overview

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THEORY AND PRACTICE OF AEROSOL SCIENCE
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... focus on “smart” materials, new alloys and composites that appear to have physical and mechanical properties favorable for target survival from beam-induced shock. Since target survivability also depends on the ability of the material that it is made of to resist damage caused by the bombarding ener ...
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... regions of close proximity, and thus prevents contact. Such a process serves to maintain uniform pleural space thickness and reduce shear stresses during breathing. We approach this phenomenon through the fluid dynamics of shear flow when bounding surfaces are not parallel, but contain local unevenn ...
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... If the entrance is not properly shaped, a contraction of the jet occurs as in sketches a, c and h, and the area of the jet is not as great as the area of the orifice or tube. For properly rounded approaches to orifices as in sketches b and e, and the constant diameter short tubes, the diameter of th ...
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The condition given by Eq
The condition given by Eq

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experiment 7

... Centrifugal Blower:A centrifugal fan/ blowers use the kinetic energy of the impellers or the rotating blade to increase the pressure of the air/gas stream which in turn moves them against the resistance caused by ducts, dampers and other components. Centrifugal fans accelerate air redially, changing ...
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... Pictures like that are very popular and shown a lot in "public science" magazines. Everybody can immediately see what that is and marvel at its tiny dimensions, while a picture like the one in the link would be received with a shrug. But scaled down versions of gear wheels, and so on, are rather use ...
Impact force of debris flow on filter dam
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... radius of boulder (m); g is gravity (9.8 m/sec2 ). If the collision is not elastic, we need to add a coefficient Kc for modification, and this study used the flume (Length is 10 m, width is 0.6 m, and its height is 0.8 m.) to experiment on the Kc. First, this study reviewed data of present filter da ...
Deep fluid flow – melt interaction and problems of granite
Deep fluid flow – melt interaction and problems of granite

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Rheology

Rheology (/riːˈɒlədʒi/; from Greek ῥέω rhéō, ""flow"" and -λoγία, -logia, ""study of"") is the study of the flow of matter, primarily in a liquid state, but also as 'soft solids' or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force.It applies to substances which have a complex microstructure, such as muds, sludges, suspensions, polymers and other glass formers (e.g., silicates), as well as many foods and additives, bodily fluids (e.g., blood) and other biological materials or other materials which belong to the class of soft matter.Newtonian fluids can be characterized by a single coefficient of viscosity for a specific temperature. Although this viscosity will change with temperature, it does not change with the strain rate. Only a small group of fluids exhibit such constant viscosity. The large class of fluids whose viscosity changes with the strain rate (the relative flow velocity) are called non-Newtonian fluids.Rheology generally accounts for the behavior of non-Newtonian fluids, by characterizing the minimum number of functions that are needed to relate stresses with rate of change of strain or strain rates. For example, ketchup can have its viscosity reduced by shaking (or other forms of mechanical agitation, where the relative movement of different layers in the material actually causes the reduction in viscosity) but water cannot. Ketchup is a shear thinning material, like yoghurt and emulsion paint (US terminology latex paint or acrylic paint), exhibiting thixotropy, where an increase in relative flow velocity will cause a reduction in viscosity, for example, by stirring. Some other non-Newtonian materials show the opposite behavior: viscosity going up with relative deformation, which are called shear thickening or dilatant materials. Since Sir Isaac Newton originated the concept of viscosity, the study of liquids with strain rate dependent viscosity is also often called Non-Newtonian fluid mechanics.The term rheology was coined by Eugene C. Bingham, a professor at Lafayette College, in 1920, from a suggestion by a colleague, Markus Reiner. The term was inspired by the aphorism of Simplicius (often attributed to Heraclitus), panta rhei, ""everything flows""The experimental characterization of a material's rheological behaviour is known as rheometry, although the term rheology is frequently used synonymously with rheometry, particularly by experimentalists. Theoretical aspects of rheology are the relation of the flow/deformation behaviour of material and its internal structure (e.g., the orientation and elongation of polymer molecules), and the flow/deformation behaviour of materials that cannot be described by classical fluid mechanics or elasticity.
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