During flow over a given body, the drag force, the upstream velocity, and the fluid density are measured. Explain how you would determine the drag coefficient. What area would you use in calculations?
What will be an ideal response?
When the drag force FD, the upstream velocityV, and the fluid density p are measured during flow over a body, the drag coefficient can be determined from
where A is ordinarily the frontal area (the area projected on a plane normal to the direction of flow) of the body.
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