The conversion relationship between flow rate and flow rate is calculated by the following formula, Q=VxS, where v represents the flow rate of water in the pipeline, s represents the cross-sectional area of the pipeline, and q represents the flow rate of water in a specific time. Where the unit of q is m. /s, the unit of v is m/s, and the unit of s is ㎡.
The flow velocity is also easy to calculate. The flow of water in the pipeline is completed by pressurizing the pump body, and its flow rate can be measured by the output of tap water per minute. If the pump body is compressed, the flow rate will be high.
Velocity field and streamline
The velocity set of each space point constitutes the velocity field. Streamline is the geometric representation of velocity field. It is a curve composed of different fluid particles at the same time, and the velocity vectors of all particles on a straight line are tangent to the curve. The streamline diagram formed by the streamline passing through each point in the flow space at the same time gives a clear picture of the whole flow at that moment. If the point velocity does not change with time, it is a constant flow; Otherwise, it is unstable flow. The streamline and streamline diagram of unsteady flow change with time.