Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!
Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Sisko fluids

Sortuj według:

Ogranicz wyniki do:

Flows of Sisko Fluid Through Symmetrically Curved Capillary Fissures and Tubes

Walicka A., Jurczak P., Falicki J.

Machine Dynamics Research

2018

Vol. 42, No. 3

27--54

This paper presents a general analytical method for deriving mathematical relationships between pressure losses and the volumetric ﬂow rate for laminar ﬂows of a Sisko ﬂuid. In this paper, only the laminar ﬂow of Sisko type ﬂuids is considered. It was demonstrated that the method can be used to ﬁnd solutions for other pseudoplastic ﬂuids and for different hapes of fissures and tubes. It can also be a good basis for numerical integration when analytical expressions are hard to obtain due to mathematical complexities. As an example, the following cases of convergent-divergent or divergent-convergent ﬁssures and tubes, namely: parabolic, hyperbolic, hyperbolic cosine and cosine curve were considered. For each example, the formulae for pressure losses, volumetric ﬂow rate and ﬂow velocity were obtained. The most general forms of these formulas can be obtained by introducing hindrance factors.

Basic flows of generalized second grade fluids based on a Sisko model

Walicka A.

International Journal of Applied Mechanics and Engineering

2017

Vol. 22, no. 4

1019--1033

The present investigation is concerned with basic flows of generalized second grade fluids based on a Sisko fluid. After formulation of the general equations of motion three simple flows of viscoplastic fluids of a Sisko type or fluids similar to them are considered. These flows are: Poiseuille flow in a plane channel, Poiseuille flow in a circular pipe and rotating Couette flow between two coaxial cylinders. After presentation the Sisko model one was presented some models of fluids similar to this model. Next it was given the solutions of equations of motion for three flows mentioned above.