Flow characteristics in a vascular tube with an overIapping constriction

• Autorzy: Pramanik S. , Mukhopadhyay S. , Layek G. C. , Samad S. A.
• Języki publikacji: EN

Abstrakty

EN

A numerical solution to the unsteady blood flow in the neighbourhood of an overlapping constriction is obtained under laminar flow conditions. Blood is modelled as a viscous, incompressible and of Newtonian type fluid. A finite-difference staggered grid has been used to solve the unsteady incompressible Navier-Stokes equations in cylindrical polar co-ordinates under the axi-symmetric conditions. A co-ordinate transformation has been employed to map the constricted tube into a straight tube. The effect of flow characteristics in this type of constriction and its consequences in arterial diseases are investigated. Flow features such as velocity, pressure and wall shear stress distributions are presented graphically. The secondary separation has been noted in the downstream of the overlapping constriction when the Reynolds number of the flow is about 205.

Słowa kluczowe

EN

overlapping constriction; staggered grid; finite difference scheme; axisymmetric flow

PL

przepływ laminarny; płyn nienewtonowski; materiały plastyczne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2007
• Tom: Vol. 12, no 1
• Strony: 153--167
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Pramanik S.

autor

Mukhopadhyay S.

autor

Layek G. C.

autor

Samad S. A.

• Department of Mathematics, The University of Burdwan Burdwan-713104 W.B., INDIA,

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