Using Holography and Particle Image Velocimetry to Study Particle Deposition, Re-suspension and Agglomeration

In this chapter two experimental imaging techniques, holography and particle image velocimetry (PIV), and their application to particle dispersed flows are discussed. Special emphasis is put on particle deposition, re-suspension and agglomeration processes. In the first two chapters the theoretical background of the techniques is presented indicating theoretical and practical limitations of both techniques. In consecutive chapters, several case studies are presented illustrating the use of both techniques. During the last decade tomographic PIV has become the leading technique in 3D flow measurements that opens up exciting new research possibilities in particle-dispersed flows. In addition, refractive index matched techniques are discussed enabling researchers to measure in detail the simultaneous coupling between finite-sized particles and turbulent flows.