On image pre-processing for PIV of single- and two-phase flows over reflecting objects |
| |
| Authors: | Niels G. Deen Paul Willems Martin van Sint Annaland J. A. M. Kuipers Rob G. H. Lammertink Antoine J. B. Kemperman Matthias Wessling Walter G. J. van der Meer |
| |
| Affiliation: | (1) Faculty of Science and Technology, Institute of Mechanics, Processes and Control Twente (IMPACT), University of Twente, Enschede, The Netherlands |
| |
| Abstract: | A novel image pre-processing scheme for PIV of single- and two-phase flows over reflecting objects which does not require the use of additional hardware is discussed. The approach for single-phase flow consists of image normalization and intensity stretching followed by background subtraction. For two-phase flow, an additional masking step is added after the background subtraction. The effectiveness of the pre-processing scheme is shown for two examples: PIV of single-phase flow in spacer-filled channels and two-phase flow in these channels. The pre-processing scheme increased the displacement peak detectability significantly and produced high quality vector fields, without the use of additional hardware. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
