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Viscosity is a measure of the resistance of a fluid to being deformed either shear stress or extensional stress. It is commonly perceived as "thickness", or resistance to flow. Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. Thus, water is "thin", having a lower viscosity, while vegetable oil is "thick" having a higher viscosity. All real fluids (except superfluids) have some resistance to stress, but a fluid which has no resistance to shear stress is known as an ideal fluid or inviscid fluid. The study of viscosity is known as rheology.
Effect of temperature on the viscosity of a gas:
Sutherland's formula can be used to derive the dynamic viscosity of an ideal gas as a function of the temperature:
η=η0 ((T0+C)/(T+C))(T/T0)^3/2
η = viscosity in (Pa·s) at input temperature T
η0 = reference viscosity in (Pa·s) at reference temperature T0
T = input temperature in kelvin
T0 = reference temperature in kelvin
C = Sutherland's constant for the gasous material in question
Valid for temperatures between 0 < T < 555 K with an error due to pressure less than 10% below 3.45 MPa
Sutherland's constant and reference temperature for some gases
Gas C[K] T0[K] η0[10-6 Pa s]
air 120 291.15 18.27
nitrogen 111 300.55 17.81
oxygen 127 292.25 20.18
co2 240 293.15 14.8
CO 118 288.15 17.2
hydrogen72 293.85 8.76
ammonia370 293.15 9.82
SO2 416 293.65 12.54
What else can I help you with?
What is the kinematic viscosity of water?
The kinematic viscosity of a fluid is found by dividing the dynamic viscosity by the density of the fluid. The kinematic viscosity of water changes depending on the temperature of the water. It ranges from .29 SI units to 1.787 SI units.
How is blood viscosity measured and what factors can affect it?
Blood viscosity is measured by a test called a viscometer, which determines how easily blood flows. Factors that can affect blood viscosity include temperature, hematocrit levels, and the presence of certain proteins or diseases.
How does heat affect viscosity?
Increasing the temperature of a fluid generally decreases its viscosity, making it flow more easily. This is because heat energizes the molecules in the fluid, causing them to move around more freely and reducing the resistance to flow. Conversely, decreasing the temperature increases the viscosity of a fluid, making it thicker and more resistant to flow.
Viscosity of gasoline?
The viscosity of diesel fuel is directly dependent upon the temperature at which it's kept. At 100 degrees, the viscosity may be as much as 140 SSU. The higher the temperature, the lower SSU, so at 130 degrees the viscosity may only be 70 SSU.
What does the viscosity vs temperature graph show?
The viscosity vs temperature graph shows how the viscosity of a substance changes as the temperature changes. It typically shows that viscosity decreases as temperature increases.
Does temperature does temperature affect viscosity of magma?
High temperature=low viscosityLow temperature=high viscosity
How does temperature affect viscosity magma?
High temperature=low viscosityLow temperature=high viscosity
Does temperature affect viscosity of magma?
High temperature=low viscosityLow temperature=high viscosity
What is the relationship between temperature and the viscosity of water as shown in the viscosity of water table?
The relationship between temperature and the viscosity of water is that as temperature increases, the viscosity of water decreases. This means that water becomes less thick and flows more easily at higher temperatures. This relationship is shown in the viscosity of water table, where the viscosity values decrease as the temperature increases.
Does the viscosity of water vary with temperature?
Yes, the viscosity of water does vary with temperature. As the temperature of water increases, its viscosity decreases, making it less resistant to flow. Conversely, as the temperature decreases, the viscosity of water increases, making it more resistant to flow.
What are factors that affect viscosity and flow?
Pressure and temperature are the two factors that affect flow and viscosity. Viscosity refers to the resistance of a liquid to the shear forces.
How does temorature affect viscosity?
Yes. Higher Temperature= Low viscosity Lower Temperature=High viscosity
What factors affect magma's viscosity?
The two main factors that affect viscosity are temperature and silica content. Higher temperatures lower viscosity while higher silica content increases viscosity.
How does the temperature affect the viscosity of honey?
The highher the temperature, the more runny the honey.
Hot oil room temperature oil room temperature water below room temperature oil Which is likely to have the lowest viscosity?
Room temperature water is likely to have the lowest viscosity among the options provided. Water has a lower viscosity compared to oil, especially when the temperature is below room temperature. Oil typically has a higher viscosity compared to water.
How does the viscosity of water change with temperature?
The viscosity of water decreases as temperature increases. This means that water becomes less thick and flows more easily as it gets warmer.
What is the kinematic viscosity of water?
The kinematic viscosity of a fluid is found by dividing the dynamic viscosity by the density of the fluid. The kinematic viscosity of water changes depending on the temperature of the water. It ranges from .29 SI units to 1.787 SI units.
