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For this reason, measured viscosities of the noble gases serve as important tests of the kinetic-molecular theory of transport processes in gases (see Chapman–Enskog theory). One of the key predictions of the theory is the following relationship between viscosity μ {\displaystyle \mu } , thermal conductivity k {\displaystyle k} , and ...
Viscosity is a measure of a fluid's rate-dependent resistance to a change in shape or to movement of its neighboring portions relative to one another. [1] For liquids, it corresponds to the informal concept of thickness; for example, syrup has a higher viscosity than water. [2]
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In textbooks on elementary kinetic theory [1] one can find results for dilute gas modeling that have widespread use. Derivation of the kinetic model for shear viscosity usually starts by considering a Couette flow where two parallel plates are separated by a gas layer.
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In the latter study, a number of common fluids were found to have bulk viscosities which were hundreds to thousands of times larger than their shear viscosities. For relativistic liquids and gases, bulk viscosity is conveniently modeled in terms of a mathematical duality with chemically reacting relativistic fluids. [3]
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(Reuters) - Australia's Macquarie on Tuesday agreed to take a 15% stake in Applied Digital's high-performance computing business and invest up to $5 billion in the company's artificial ...