Particle Image Velocimetry

Purpose and focus of SIG

Particle Image Velocimetry (PIV) is widely acknowledged as the leading flow measurement technique in experimental fluid mechanics. Its working principle is based on the indirect evaluation of the flow velocity by measuring the displacement of small particles inserted into the flow and carried by the fluid. These tracer particles are illuminated by a light source, typically a laser, and their position is recorded by digital cameras.

The introduction of digital PIV in the early 1990s has greatly contributed to enhance the understanding of turbulent and complex flows. Recent advances of the technique include the possibility of measuring the flow field in three-dimensional volumes (tomographic PIV) and the determination of flow pressure and aerodynamic loads from the velocity measurements.

The SIG 32 “Particle Image Velocimetry” aims at bringing together researchers and users of PIV to:

(i) Promote the use of PIV for both fundamental research and industrial applications
(ii) Widen the range of applicability of the technique while reducing the complexity of the experimental setup (lower user’s            expertise required)
(iii) Define standard approaches and best practices for PIV data acquisition and processing

The activities of the SIG32 will involve workshops on specific aspects of the PIV technique as well a wide range of applications. Additionally, PIV-challenges will be organised where the participants will compete to define the best approaches for image evaluation and PIV data processing. Examples of the workshops topics include:

SIG20 “Drag reduction and flow control”

TopicConnection to other SIG’s
Loads and pressure determination form PIVSIG20 "Drag reduction and flow control"
PIV uncertainty quantificationSIG45 “Uncertainty Quantification in Industrial Analysis and Design
Large-scale PIV for industrial applicationsSIG45 “Uncertainty Quantification in Industrial Analysis and Design
Experimental validation of numerical simulationsSIG1 “Large Eddy Simulation”
SIG15 “Turbulence Modelling”
PIV for complex and separated flowsSIG36 “Swirling flows”
SIG47 “3D Wakes”
PIV for aeroacousticsSIG39 “Aeroacoustics”
Experimental approaches for fluid-structure interactionSIG41 “Fluid-structure interaction

PIV Movies