Steady laminar Couette flow of a dilatant fluid along a channel with suction at a bounding wall
- Title:
- Steady laminar Couette flow of a dilatant fluid along a channel with suction at a bounding wall
Ustálené laminárne Couetteho prúdenie Nenewtonskej tekutiny v potrubí so saním na stenách - Creator:
- Sacheti, N.C., Chandran, P., Jaju, R.P., and Bhatt, B.S.
- Identifier:
- https://cdk.lib.cas.cz/client/handle/uuid:d278018d-aec8-4d79-8c29-a370921a6f39
uuid:d278018d-aec8-4d79-8c29-a370921a6f39 - Subject:
- non-Newtonian fluid, plane Couette flow, similarity transformation, suction, skin friction, Nenewtonská tekutina, rovinné prúdenie Couette, transformácia podobnosti, sanie, and povrchové trenie
- Type:
- model:article and TEXT
- Format:
- bez média and svazek
- Description:
- We consider a special dilatant fluid model for which the apparent viscosity can be expressed as a polynomial in the second scalar invariant of the rate of strain tensor. The model has been used to investigate the steady plane Couette flow of a non-Newtonian fluid through a channel with suction, assumed small, at the lower porous wall. The introduction of a similarity transformation in the perturbed governing partial differential equations of the flow leads to a system of coupled non-linear ordinary differential equations. The solutions of these equations have been obtained analytically as a power series in the suction parameter . The combined effects of the non-Newtonian and the suction parameters on the longitudinal and transverse velocity profiles as well as the skin friction, have been discussed. The validity of the analytical solutions has also been checked with the corresponding numerical solutions for small values of the governing parameters. and Štúdia sa zaoberá sa špeciálnym modelom nenewtonskej tekutiny, pre ktorú sa môže skutočná viskozita vyjadriť vo forme polynomickej závislosti na druhom skalárnom invariante tenzora rýchlosti deformácie. Model bol využitý na štúdium ustáleného Couetteho rovinného prúdenia nenewtonskej tekutiny v kanáli so saním cez porézne steny. Zavedenie transformácie podobnosti do lineanizovaných parciálnych diferenciálnych rovníc vedie k systému obyčajných nelineárnych diferenciálnych rovníc. Ich riešenie sme získali vo forme potenčného radu od sacieho parametra λ. Analyzovali sme vplyv rozťažnosti tekutiny a sacieho parametra na pozdĺžny a priečny rýchlostny profil, ako aj na povrchové trenie. Platnosť analytického riešenia sme porovnali s numerickým riešením pre malé hodnoty použitých parametrov.
- Language:
- Slovak
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public - Coverage:
- 175-184
- Source:
- Journal of hydrology and hydromechanics | 2004 Volume:52 | Number:3
- Harvested from:
- CDK
- Metadata only:
- false
The item or associated files might be "in copyright"; review the provided rights metadata:
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- policy:public