Navier–Stokes flow in converging–diverging distensible tubes
نویسندگان
چکیده
منابع مشابه
Pulsatile flow patterns in distensible tubes.
• During the last fifty years a number of physical theories have been proposed in an attempt to describe analytically the behavior of pulsatile flow in the mammalian arterial system. In order to make such an approach to a system of nonuniform, viscoelastic vessels containing a non-Newtonian fluid at all possible, it becomes necessary to introduce simplifying assumptions, the judicious selection...
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• Although much has been written about the origins and transmission of heart sounds and murmurs, little is known regarding the generation of vibrations by disturbances of flow in liquids or the mechanisms by which vibrations in flowing liquids are coupled into surrounding distensible walls. Eddy formation and turbulence are generalry regarded as the sources of cardiovascular sounds. The possibl...
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A comparison is made between the Hagen-Poiseuille flow in rigid tubes and networks on one side and the time-independent one-dimensional Navier-Stokes flow in elastic tubes and networks on the other. Analytical relations, a Poiseuille network flow model and two finite element Navier-Stokes one-dimensional flow models have been developed and used in this investigation. The comparison highlights t...
متن کاملPulsatile Pressure and Flow through Distensible Vessels.
• The problems of characterizing pulsatile patterns of pressure and flow in the arterial system are intriguing and complex. Ejection of blood from the left ventricle initiates nonlinear transients in pressure and flow at the root of the aorta. These transients initiate complex pulse patterns that are propagated throughout the arterial tree. Some of the factors that must be reckoned with in an a...
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Article history: Received 30 April 2013 Received in revised form 20 June 2013 Accepted 20 June 2013 Available online 27 July 2013
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ژورنال
عنوان ژورنال: Alexandria Engineering Journal
سال: 2015
ISSN: 1110-0168
DOI: 10.1016/j.aej.2015.03.028