What variables dictate the magnitude of kinematic viscosity________________?
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Answer: E. density
Explanation
Kinematic viscosity is defined as dynamic viscosity divided by fluid mass density. Dividing absolute viscosity by density makes density the primary denominator determining kinematic values. Changes in fluid density directly alter the calculated kinematic viscosity magnitude. Dynamic viscosity measures internal fluid shear resistance under applied mechanical forces. Fluid density represents the mass per unit volume of the substance at given conditions. Temperature significantly affects both dynamic viscosity and density in most fluid mediums.
Hydraulic engineers incorporate kinematic viscosity when calculating Reynolds numbers for pipe flow. Fluid temperature variations alter density and viscosity, affecting hydrodynamic drag coefficients. Aeronautical engineers account for air density changes at altitude when calculating kinematic viscosity. Pressure has a minor effect on liquid density and viscosity but is not the defining divisor. Distance does not dictate kinematic viscosity, which is an intensive fluid property. Flow velocity affects flow regimes but does not determine intrinsic kinematic viscosity values.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
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