was evaluated at 5[degrees]C utilizing a Rotational Viscometer Microprocessor (Q860M21, Quimis[R], Sao Paulo, SP, Brazil) with spindle number 4.
MR fluid, when subjected to magnetic field, quickly increases its apparent viscosity
and becomes a viscoelastic solid.
Temperature and concentration effect on the apparent viscosity
Experimental study on apparent viscosity
of water cut super-heavy oils, Oil and Gas., 26, 52 (2007).
The melt temperature was measured in the die and as a result, the inline apparent viscosity
data were corrected to a comparable 100[degrees]C using an Arrhenius relationship with flow activation energy of 32.7 kJ/mol (determined by off-line rheometry).
As there is a lack of surfactant with good properties, the method of enhancing interfacial activity also relies mainly on adding alkaline, but the added alkali may reduce the apparent viscosity
of the ASP system and cause the mineral rock to scale, therefore, leading to incompatibility between decreasing IFT and increasing apparent viscosity
To understand how the workability of the suspensions can affect particle packing and other physical properties, the apparent viscosity
of the suspensions (30-80 vol.% of water) was measured (Brookfield Viscosimeter, VLDV-II+PRO, USA) using a coaxial cylinder configuration (barrel: 19 mm diameter by 65 mm length and spindle 17.47 mm diameter by 31.85 mm height).
The effect of high shear and high pressure homogenization on the apparent viscosity
is shown in Figure 5.
The rheological properties of the slurry fluid can be characterized by rheological parameters such as the flow index, consistency coefficient, apparent viscosity
, plastic viscosity, and static shear force, as shown in Table 3.
Considering the abovementioned facts, the main objective of this research was to experimentally study the effect of temperature on apparent viscosity
, shear stress, yield stress, and pipeline transport of paste.
Lawson, "Mechanisms of foam flow in porous media: apparent viscosity
in smooth capillaries," SPE Journal, vol.
During water movement in plane-radial microcrack at opening values of 30 and 35 [micro]m at 303 and 293 K temperature the limiting shear stress equals to zero and the apparent viscosity
remains constant both in the first and in the second series of experiments.