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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
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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 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 does heat affect viscosity?
Heat decreases viscosity. Lower viscosity means thinner like water. An example of higher viscosity would probably be honey.
How does viscosity affect fluid?
The higher the viscosity, the less it will flow..so something like water has a low viscosity, and something like custard has a high viscosity :)hope i helped xx
How viscosity of liquid depends on temperature?
Viscosity is a liquids resistance to flow. Viscosity decreases as the liquid is heated. Molecular shape of the components making up the liquid can affect viscosity. Small round molecules make little contact and can move more freely making a compound less viscous. The viscosity of a fluid is basically a measure of how sticky it is. Water has a fairly low viscosity; things like shampoo or syrup have higher viscosity. Viscosity also depends on temperature - engine oil, for instance, is much less viscous at high temperatures than it is in a cold engine in the middle of winter.
How does temperature affect the viscosity of ketchup?
The viscosity decrease increasing the temperature.
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 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
How does the temperature affect the viscosity of honey?
The highher the temperature, the more runny the honey.
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.
What are the three factors that affect viscosity and density?
Temperature, concentration, sometimes also internal fluid velocity. Moreover density, type of liquid, surface where it flows, viscous drag.
Do hotter liquids have more or less viscosity than colder liquids?
Cold water has higher viscosity than Hot water, take note that, as the temperature of fluid increases, viscosity decreases.
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.
How could you alter the viscosity of honey?
The viscosity is decreased by adding water and is increased by a decrease of temperature.
