Chapter 9.5, Problem 1LLP

To determine

The information about the PIV technique and its advantages.

Explanation of Solution

The PIV technique is stands for Particle Image Velocimetry technique. The PIV technique is used for the, measurement of the velocity field and visualization of the flow.

The steps used in the PIV technique are as follows.

• In the first step, we trace the flow with the help of suitable seed particles to obtain the path lines.
• Then a pulse laser light is used to illuminate the flow region and record the view with the help of a video camera.
• Then particles are illuminated with the help of a laser light and again a new view is recorded.
• By comparing both the views its displacement and velocity is calculated.

The advantages of PIV technique are listed below.

• The velocity of the flow field can be calculated by using the PIV technique.
• The very high accuracy can be maintained.
• The flows can be measure in 3-D space using the PIV technique.