دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the rheological parameter used to describle the flowing characters of pseudoplasticity fluid

n: in fluid dynamics, the state of a fluid in motion is determined by the type of fluid (e.g., Newtonian, plastic, pseudoplastic, dilatant);properties of the fluid such as viscosity and density;geometry of the system;the velocity. Thus, under a given set of conditions and fluid properties, the fluid flow can be described as plug flow, laminar (called also Newtonian, streamline, parallel, or viscous) flow, or turbulent flow.

n: the state of fluid dynamics of a fluid in motion is determined by the type of fluid (e.g, newtonian,plastic pseudoplastic, dilatant),the properties of the fluid such as viscosity and density, the geometry of the system and the velocity,thus under a given

n: a naturally occurring hydrophilic polysaccharide derived from the seed of the guar plant. The gum is chemically classified as a galactomannan. Guar gum slurries made up in clear fresh or brine water possess pseudoplastic flow properties.

n: A hydrophilic polysaccharide from the seed of the guar plant. It is a galactomannan type of saccharide that is highly dispersible into water and brines of various types and salinity. Its water solutions are non-Newtonian and also can be cross-linked by bo

n: also called index number law, the mathmatic expression describes rheological curve of pseudoplastic fluid.

adj: having the capability of changing apparent viscosity with a change in shear rate. Pseudoplastic fluids gain viscosity when subjected to a decrease in shear rate, and lose viscosity when the shear rate is increased. See shear

n: a kinds of non-Newtonian fluid, its character is that it flows when enforced by slim shear stress.



a complex non-Newtonian fluid without thixotrophy. Flow starts with pressure but apparent viscosity decreases instantaneously with increasing rate of shear.