Laminar flow usually occurs at speeds_____________?
Correct answer: A. Low
- A. Low
- B. High
- C. Very high
- D. Some time high and some time low
Explanation
Laminar flow is favoured when the fluid speed is low, because viscous forces can keep neighbouring layers moving smoothly. At high speeds, inertial effects become stronger and turbulence is more likely, making high speed the likely mistaken choice.
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About Fluid Flow
Fluid flow covers pressure, density, viscosity and the motion of liquids and gases through pipes or open channels. It includes the continuity equation, Bernoulli equation, streamline and turbulent flow, and the effects of changing area, height and speed. Viscosity and ideal fluid assumptions must not be confused with pressure effects.
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