Viscoelastic flow due to a rotating disc enclosed in a cylindrical casing - (Influence of aspect ratio)

Citation
T. Moroi et al., Viscoelastic flow due to a rotating disc enclosed in a cylindrical casing - (Influence of aspect ratio), JSME I J B, 44(3), 2001, pp. 465-473
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
ISSN journal
1340-8054 → ACNP
Volume
44
Issue
3
Year of publication
2001
Pages
465 - 473
Database
ISI
SICI code
1340-8054(200108)44:3<465:VFDTAR>2.0.ZU;2-#
Abstract
This paper deals with viscoelastic flows due to a rotating disc enclosed in a cylindrical casing with variable axial clearances. The behavior of visco elastic flows due to a rotating disc has been characterized based on an exp erimental study using a flow visualization technique and numerical simulati on using several models for constitutive equations. The pattern of secondar y flow for the region of competition between the elastic force and the iner tial force is a radially arranged double-cell structure (Type DC 1 ') which differs from Type DC 1. Type DC 2 was reproduced qualitatively by numerica l simulation with Giesekus and Phan Thien-Tanner models, but not by numeric al simulation with the upper convected Maxwell model or power-law model. Fu rthermore, the profiles of the tangential velocity component V-theta and th e radial velocity component V-r obtained by numerical simulation with the G iesekus and Phan Thien-Tanner models for small H/R agreed with those measur ed using particle tracking velocimetry (PTV).