![]() ![]() Fanchi, in Integrated Reservoir Asset Management, 2010 2.2.10 Viscosity If the viscosity does not depend on flow rate, the fluid is called a Newtonian fluid. A fluid is considered a non-Newtonian fluid if the viscosity of the fluid depends on flow rate. The relationship between viscosity and flow rate defines the rheology of the fluid. Thus, 1 centistoke equals 1 centipoise divided by 1 g/cc.ĭynamic viscosity μ is used in Darcy's law to calculate the rate of fluid flow in porous media. If fluid density ρ has the unit of g/cc, then kinematic viscosity ν has the unit of centistoke. The unit of dynamic viscosity μ is centipoise. Dynamic viscosity is related to kinematic viscosity by the equation μ = ρν where ρ is the density of the fluid. Two types of viscosity are commonly used: dynamic viscosity μ and kinematic viscosity ν. Thus, a fluid with a large viscosity has a low fluidity. The inverse of viscosity is called fluidity. ![]() In general, gas viscosity is less than liquid viscosity. The coefficient of viscosity is a measure of resistance to flow of the fluid. Fanchi, in Shared Earth Modeling, 2002 Viscosity ![]()
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