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potential flow
Science; General science
A fluid flow that is isentropic and that, if incompressible, can be mathematically described by Laplace's equation. For an ideal fluid, or a flow in which viscous effects are ...
turbulent flow
Science; General science
A fluid motion in which velocity, pressure, and other flow quantities fluctuate irregularly in time and space. Figure 1 shows a slice of a water jet emerging from a circular ...
non-newtonian fluid
Science; General science
A fluid that departs from the classic linear newtonian relation between stress and shear rate. In a strict sense, a fluid is any state of matter that is not a solid, and a solid ...
newtonian fluid
Science; General science
A fluid whose stress at each point is linearly proportional to its strain rate at that point. The concept was first deduced by Isaac Newton and is directly analogous to Hooke's ...
allantois
Science; General science
A fluid-filled sac- or sausagelike, extraembryonic membrane lying between the outer chorion and the inner amnion and yolk sac of the embryos of reptiles, birds, and mammals. The ...
fluidized bed
Science; General science
A fluidized bed consists of discrete particles through which a gas or liquid flows upward. Fluidization is achieved when the gas or liquid velocity is sufficiently high that the ...
anticline
Science; General science
A fold in layered rocks in which the strata are inclined down and away from the axes. The simplest anticlines (see illus .) are symmetrical, but in more highly deformed regions ...
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