Question

Flow measurements with a Prandtl-Pitot tube showed that the tip readings varied only across the flow while the side-opening readings varied only in the direction of flow. The type of flow is

• A. Uniform irrotational
• B. Uniform rotational
• C. Non-uniform irrotational
• D. Non-uniform rotational

Answer 1

The correct option is D Non-uniform rotational

(d)
As tip reading varied only across the flow while side-opening reading varied only in the direction of flow, velocity of flow is not constant in the direction of flow. Hence the flow is non-uniform rotational.