Wyniki wyszukiwania - BazTech

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The effect of slip velocity on unsteady peristalsis MHD blood flow through a constricted artery experiencing body acceleration

Nandal J., Kumari S., Rathee R.

International Journal of Applied Mechanics and Engineering

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2019

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Vol. 24, no. 3

645--659

EN

In this analysis, we present a theoretical study to examine the combined effect of both slip velocity and periodic body acceleration on an unsteady generalized non-Newtonian blood flow through a stenosed artery with permeable wall. A constant transverse magnetic field is applied on the peristaltic flow of blood, treating it as an elastico-viscous, electrically conducting and incompressible fluid. Appropriate transformation methods are adopted to solve the unsteady non-Newtonian axially symmetric momentum equation in the cylindrical polar coordinate system with suitably prescribed conditions. To validate the applicability of the proposed analysis, analytical expressions for the axial velocity, fluid acceleration, wall shear stress and volumetric flow rate are computed and for having an adequate insight to blood flow behavior through a stenosed artery, graphs have been plotted with varying values of flow variables, to analyse the influence of the axial velocity, wall shear stress and volumetric flow rate of streaming blood.

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Peristaltic flow and heat transfer of a conducting Phan-Thien-Tanner fluid in an asymmetric channel – application to chyme movement in small intestine

Vajravelu K., Sreenadh S., Dhananjaya S., Lakshminarayana P.

International Journal of Applied Mechanics and Engineering

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2016

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Vol. 21, no. 3

713--736

EN

In this paper, the influence of heat transfer on the peristaltic flow of a conducting Phan-Thien-Tanner fluid in an asymmetric channel with porous medium is studied. The coupled nonlinear governing differential equations are solved by a perturbation technique. The expressions for the temperature field, the stream function, the axial velocity, and the pressure gradient are obtained. The effects of the various physical parameters such as the magnetic parameter M, the permeability parameter σ, the Brinkman number Br and the Weissenberg number We on the pumping phenomenon are analyzed through graphs and the results are discussed in detail. It is observed that the velocity and the pressure are decreased with increasing the magnetic parameter M whereas the effect of the parameter M on the temperature field is quite the opposite.

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Wybrane zagadnienia napędu perystaltycznego

Pillich W.

Zeszyty Naukowe. Mechanika / Politechnika Śląska

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2005

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z. 152

187-204

PL

W opracowaniu przedstawiono wybrane wyniki badań napędu perystaltycznego, w którym ruch uzyskuje się za pomocą oddziaływania elastycznego przewodu na koło zaciskające przewód zasilany płynem pod ciśnieniem. Opisano opracowane konstrukcje zespołów napędu zastosowane w budowie stanowisk badawczych i mogących być wykorzystywanych w budowie urządzeń. Zaprezentowano metodę obliczeń podstawowych parametrów napędu niezbędnych do jego projektowania. Zaprezentowano wyniki eksperymentalnych badań siły naporu oraz wzrostu oporu jazdy po przewodach elastycznych.

EN

The part of the investigation into a peristaltic drive, in which movement is obtained by an interaction between an elastic hose and a wheel clipping the hose powered by the fluid under pressure is presented. The construction of drive used in the calculation station construction and to device realisation is stated. The method of calculation of some basic drive parametrs essential for designing, such as size, position of the adhering hose surface to the whell, strength of hose interaction with the wheel is presented.

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Przemieszczanie realizowane napędem przewodami elastycznymi

Pillich W.

Maszyny Dźwigowo-Transportowe

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2000

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Nr 3

5-12

PL

Napęd przewodami elastycznymi nazywany napędem perystaltycznym, można realizować dla dowolnego pochylenia trasy. W pracy przedstawiono modele napędu dla przemieszczania poziomego i pionowego. Omówiono cechy charakteryzujące zakres zastosowania i przykładowe zdolności transportowe. Podano zależnosci umożliwiające wyznaczenie składników oporu jazdy odmiennych od typowych, tj. oporu toczenia po przewodzie oraz oporu deformacji przewodu. Podano wyniki przykładowych obliczeń zastępczego i jednostkowego oporu tarcia potoczystego.

EN

Drive with elastic hoses called peristaltic drives, can be realise of any inclinations of route. The work introduces models of drive for horizontal and vertical translocating. The matters under dissuasion are features characterising range of use and example- forwarding abilities. The work describes dependencies enabling delimitation of components of drive resistance different from typical, e.g. resistance of rolling on hose and resistance of deformation of a hose. One gave results exemplary- calculations of replacement and of singular resistance of rolling friction