TY - JOUR
T1 - Unsteady flow of viscoelastic fluid modeled by beeds, springs and dampers
AU - Ishikawa, Takuji
AU - Kawabata, Nobuyoshi
AU - Fujita, Katsushi
AU - Miyake, Yutaka
PY - 2000/5
Y1 - 2000/5
N2 - Flow of viscoelastic fluid is commonly analyzed by using constitutive equati6ns. In this paper, bead-spring-damper macro model is proposed as an alternative to analyze viscoelastic flow. The tetrahedral structure of beads, springs and dampers models a gathering of interwined polymer chains. Behavior of the bead-spring-damper structure is computed under start-up flow, stop flow and oscillatory flow conditions. Stress overshoot, stress relaxation, dynamic viscosity and dynamic modulus are investigated. The results show that the effect of elasticity appears strongly in the unsteady flow, and that the bead-spring-damper macro model can express characteristics of viscoelastic fluid consistently.
AB - Flow of viscoelastic fluid is commonly analyzed by using constitutive equati6ns. In this paper, bead-spring-damper macro model is proposed as an alternative to analyze viscoelastic flow. The tetrahedral structure of beads, springs and dampers models a gathering of interwined polymer chains. Behavior of the bead-spring-damper structure is computed under start-up flow, stop flow and oscillatory flow conditions. Stress overshoot, stress relaxation, dynamic viscosity and dynamic modulus are investigated. The results show that the effect of elasticity appears strongly in the unsteady flow, and that the bead-spring-damper macro model can express characteristics of viscoelastic fluid consistently.
KW - Beed-spring-damper macro model
KW - Fluid dynamics
KW - Non-newtonian fluid
KW - Numerical analysis
KW - Unsteady flow
KW - Viscoelastic fluid
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U2 - 10.1299/kikaib.66.1287
DO - 10.1299/kikaib.66.1287
M3 - Article
AN - SCOPUS:71249153300
VL - 66
SP - 1287
EP - 1294
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 645
ER -