Publication result detail

Research of Flow Stability of Non-Newtonian Magnetorheological Fluid Flow in the Gap between Two Cylinders

KOZUBKOVÁ, M.; JABLONSKÁ, J.; BOJKO, M.; POCHYLÝ, F.; FIALOVÁ, S.

Original Title

Research of Flow Stability of Non-Newtonian Magnetorheological Fluid Flow in the Gap between Two Cylinders

English Title

Research of Flow Stability of Non-Newtonian Magnetorheological Fluid Flow in the Gap between Two Cylinders

Type

WoS Article

Original Abstract

This paper deals with a mathematical modeling of flow stability of Newtonian and non-Newtonian fluids in the gap between two concentric cylinders, one of which rotates. A typical feature of the flow is the formation of a vortex flow, so-called Taylor vortices. Vortex structures are affected by the speed of the rotating cylinder and the physical properties of the fluids, i.e., viscosity and density. Analogy in terms of viscosity is assumed for non-Newtonian and magnetorheological fluids. Mathematical models of laminar, transient and turbulent flow with constant viscosity and viscosity as a function of the deformation gradient were formulated and numerically solved to analyze the stability of single-phase flow. To verify them, a physical experiment was performed for Newtonian fluids using visualizations of vortex structures-Taylor vortices. Based on the agreement of selected numerical and physical results, the experience was used for numerical simulations of non-Newtonian magnetorheological fluid flow.

English abstract

This paper deals with a mathematical modeling of flow stability of Newtonian and non-Newtonian fluids in the gap between two concentric cylinders, one of which rotates. A typical feature of the flow is the formation of a vortex flow, so-called Taylor vortices. Vortex structures are affected by the speed of the rotating cylinder and the physical properties of the fluids, i.e., viscosity and density. Analogy in terms of viscosity is assumed for non-Newtonian and magnetorheological fluids. Mathematical models of laminar, transient and turbulent flow with constant viscosity and viscosity as a function of the deformation gradient were formulated and numerically solved to analyze the stability of single-phase flow. To verify them, a physical experiment was performed for Newtonian fluids using visualizations of vortex structures-Taylor vortices. Based on the agreement of selected numerical and physical results, the experience was used for numerical simulations of non-Newtonian magnetorheological fluid flow.

Keywords

Taylor vortices; non-Newtonian viscosity; magnetorheological fluids; experiment; numerical simulation; CFD

Key words in English

Taylor vortices; non-Newtonian viscosity; magnetorheological fluids; experiment; numerical simulation; CFD

Authors

KOZUBKOVÁ, M.; JABLONSKÁ, J.; BOJKO, M.; POCHYLÝ, F.; FIALOVÁ, S.

RIV year

2022

Released

15.10.2021

Publisher

MDPI

Location

BASEL

ISBN

2227-9717

Periodical

Processes

Volume

9

Number

10

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/2227-9717/9/10/1832

Full text in the Digital Library

http://hdl.handle.net/11012/203338

BibTex

@article{BUT175898,
  author="Milada {Kozubková} and Jana {Jablonská} and Marian {Bojko} and František {Pochylý} and Simona {Fialová}",
  title="Research of Flow Stability of Non-Newtonian Magnetorheological Fluid Flow in the Gap between Two Cylinders",
  journal="Processes",
  year="2021",
  volume="9",
  number="10",
  pages="1--16",
  doi="10.3390/pr9101832",
  url="https://www.mdpi.com/2227-9717/9/10/1832"
}

Documents

processes-09-01832-v3