Question

Indicate the correct statement about the effect of Reynolds number on the character of the flow over an object.

A. If Reynolds number increases the size of the region around the object that is affected by viscosity increases.
B. If Reynolds number is high enough the effect of viscosity is negligible and the fluid flows over the plate without sticking to the surface.
C. If Reynolds number is low enough the effect of viscosity is so high that there is a region near the plate where the fluid is stationary.
D. If Reynolds number increases the extent of the region around the object that is affected by viscosity decreases.

Answer 1

The effect of Reynolds number on the flow over an object can be determined by whether the flow is laminar or turbulent.

Step-by-step explanation:

The correct statement about the effect of Reynolds number on the character of the flow over an object is B. If Reynolds number is high enough, the effect of viscosity is negligible and the fluid flows over the plate without sticking to the surface.

The Reynolds number is a dimensionless quantity that indicates whether flow is laminar or turbulent. A high Reynolds number indicates turbulent flow, where the effect of viscosity is minimal and the fluid moves smoothly over the object. In contrast, a low Reynolds number indicates laminar flow, where the effect of viscosity is significant and the fluid sticks to the surface of the object.