Abstract The paper considers metrological instrumentation for studying the rheological properties of magnetic fluids. It also presents design a coaxial viscometer. There is analysis factors that affect measurement accuracy. Errors are systematized into 2 main groups: method and instrumental. authors analyse contribution each group to total error. established temperature instability liquid under...

A b stra ct . Lattice gas automata have been recently proposed as a new technique for the numerical integration of the two-dimensional Nav ier-Stokes equation. We have accurately tes ted a stra ightforward var iant of the original model, due to Fr isch, Hasslacher, and Pomeau, in a simp le geometry equivalent to two-dimensional Poiseuille (Cha nnel) flow dr iven by a uniform body force. The mom...

It is traditional at the Fåhraeus Award Ceremony for the previous winner to give the laudatio to the new one. This meant that my dear friend, Michel Boisseau, should have given it this year but, for personal reasons, he was unable to attend the meeting. This was sad but we all wished him well. However, it is an ill wind. . . and the result was that I was twice blessed in having a double laudati...

The main objective of this article is to demonstrate through experimental means the capacity of the quartz crystal resonator (QCR) to characterize biological samples of aqueous dilutions of hyaluronic acid according to their viscosity and how this capacity may be useful in the potential diagnosis of arthritic diseases. The synovial fluid is viscous due to the presence of hyaluronic acid, synthe...

The effect of solid content (2.5-10%, w/v) and temperature (30-70°C) on the viscosity of tapioca meal from three cassava varieties was investigated in this study. Viscosity measurements were conducted using a digital rotational Brookfield viscometer. The viscosity of tapioca meal increased with increasing solid content and decreasing viscometer speeds. An empirical power-law equation fitted the...

We have obtained data on the frequency of aggregates of different size classes and on the maximum aggregate diameter of lymphoid cells subjected to aggregation in the laminar shear field of a Couette viscometer. Maximum aggregate diameter reached a plateau level during aggregation. This plateau is considered to be the result of a balance between the hydrodynamic shear forces tending to resist t...