velocimeter
A velocimeter is an instrument for measuring velocity. It can determine the speed of a moving object, the velocity of a fluid at a point, or the velocity field within a flow. The term encompasses devices used in engineering, physics, meteorology, oceanography, and astronomy, among other fields.
In fluid dynamics, velocimeters can be categorized as point measurements or flow-field instruments. Point velocimeters include
In addition to laboratory and industrial applications, acoustic Doppler and ultrasonic techniques are widely used to
Key considerations for velocimetry include velocity range, spatial and temporal resolution, the need for seeding particles