Fluid flow transition from laminar to turbulent inside a pipe is independent of the___________________?
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Answer: A. Length of the pipe
Explanation
Fluid flow transition from laminar to turbulent depends on the Reynolds number inside pipes. Pipe length does not appear in the Reynolds number equation governing fluid flow regime transitions. Diameter, fluid density, velocity, and dynamic viscosity determine whether flow becomes turbulent. Osborne Reynolds demonstrated that dimensionless flow parameters characterize fluid behavior in conduits. Hydraulic entrance lengths affect velocity profiles but do not alter the critical transition number. Turbulent flow occurs when inertial forces exceed viscous forces within flowing fluid streams.
Pipeline engineers calculate pressure drops differently depending on whether flow is laminar or turbulent. HVAC system design requires accurate flow regime identification to determine friction losses. Fluid mechanics analysis relies on dimensional analysis to simplify complex transport phenomena. Pipe diameter directly influences the Reynolds number and flow transition calculations. Density is a critical fluid property required for computing inertial forces in pipe flow. Fluid velocity determines the magnitude of inertial forces relative to viscous damping effects.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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