Quantitative characterization of blood rheological behavior in transient flow with a model including a structure parameter

Article type: Research Article

Authors: Charara, J.^a | Aurengo, A.^b | Lelievre, J.C.^a | Lacombe, C.^a

Affiliations: [a] Unité de Biorhéologie, associée au CNRS UA 343, France | [b] Département de Biophysique et de Biomathématiques, CHU Pitié-Salpêtrière, 91 Bd de l’Hôpital, 75634 Paris Cedex 13, France

Note: [] Accepted by: D. Quemada

Abstract: Transient rheological behavior of blood which involves non newtonian viscosity, elasticity and thixotropy can be modelized with a Maxwell rheological state equation which depends on a structure parameter having dimension of a shear rate. Identification of the model parameters leads to use an exponential apparent shear rate step and to use recursive filters for taking into account the impulse response of the viscometer servo-control device. Typical results for a normal blood sample are given.

Keywords: blood viscosity, thixotropy, viscoelasticity, rheological model

DOI: 10.3233/BIR-1985-22605

Journal: Biorheology, vol. 22, no. 6, pp. 509-520, 1985