TY - JOUR

T1 - On the limit of linear viscoelastic response in the flow between eccentric rotating disks

AU - Jongschaap, R.J.J.

AU - Knapper, K.H.

AU - Lopulissa, J.S.

PY - 1978

Y1 - 1978

N2 - The dependence on frequency of the limiting value of strain, ΨL, for which linear Viscoelastic response occurs in eccentric rotating disks (ERD) flow is studied theoretically and experimentally. The theoretical investigations are based upon the general simple-fluid theory of Coleman and Noll. It is shown that according to this theory ΨL becomes independent of angular velocity, ω, at relatively high frequencies, whereas ΨL becomes inversely proportional to at sufficiently low frequencies. The results of previous investigations, based upon some special rheological models, are discussed. The behavior predicted by the simple-fluid theory is confirmed by experiments on polyisobutylene solutions.

AB - The dependence on frequency of the limiting value of strain, ΨL, for which linear Viscoelastic response occurs in eccentric rotating disks (ERD) flow is studied theoretically and experimentally. The theoretical investigations are based upon the general simple-fluid theory of Coleman and Noll. It is shown that according to this theory ΨL becomes independent of angular velocity, ω, at relatively high frequencies, whereas ΨL becomes inversely proportional to at sufficiently low frequencies. The results of previous investigations, based upon some special rheological models, are discussed. The behavior predicted by the simple-fluid theory is confirmed by experiments on polyisobutylene solutions.

KW - IR-70746

U2 - 10.1002/pen.760181009

DO - 10.1002/pen.760181009

M3 - Article

VL - 18

SP - 788

EP - 792

JO - Polymer engineering and science

JF - Polymer engineering and science

SN - 0032-3888

IS - 10

ER -