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Two new differential equations of turbulent dissipation rate and apparent viscosity for non-newtonian fluids

Two new differential equations of turbulent dissipation rate and apparent viscosity for non-newtonian fluids
Two new differential equations of turbulent dissipation rate and apparent viscosity for non-newtonian fluids

A new equation for the dissipation rate of turbulent kinetic energy is derived exactly in conservative form for a Generalized Newtonian Fluid (GNF). The transport equations for mass, momentum, and turbulent kinetic energy are written along to the transport equation for the shear rate. A new transport equation for the apparent viscosity is derived assuming the viscosity as dependent only on the shear rate. The assumption is of incompressible two-dimensional GNF flow.

Apparent viscosity, Dissipation rate, Generalized Newtonian fluid, Shear rate, Turbulent energy
0735-1933
696-703
Gori, Fabio
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, Andrea
54a72da6-c8a2-468c-9773-897efac0638f
Gori, Fabio
f7e76614-37d8-4c3b-b7b0-8c6603a4515f
Boghi, Andrea
54a72da6-c8a2-468c-9773-897efac0638f

Gori, Fabio and Boghi, Andrea (2011) Two new differential equations of turbulent dissipation rate and apparent viscosity for non-newtonian fluids. International Communications in Heat and Mass Transfer, 38 (6), 696-703. (doi:10.1016/j.icheatmasstransfer.2011.03.003).

Record type: Article

Abstract

A new equation for the dissipation rate of turbulent kinetic energy is derived exactly in conservative form for a Generalized Newtonian Fluid (GNF). The transport equations for mass, momentum, and turbulent kinetic energy are written along to the transport equation for the shear rate. A new transport equation for the apparent viscosity is derived assuming the viscosity as dependent only on the shear rate. The assumption is of incompressible two-dimensional GNF flow.

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More information

Published date: July 2011
Keywords: Apparent viscosity, Dissipation rate, Generalized Newtonian fluid, Shear rate, Turbulent energy

Identifiers

Local EPrints ID: 421751
URI: http://eprints.soton.ac.uk/id/eprint/421751
ISSN: 0735-1933
PURE UUID: 5239d902-4f08-4f9c-a14e-7f513eda25c3
ORCID for Andrea Boghi: ORCID iD orcid.org/0000-0002-9387-326X

Catalogue record

Date deposited: 26 Jun 2018 16:30
Last modified: 20 Jul 2019 01:33

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