Academic Journal
Image-based Lagrangian Particle Tracking in bed-load experiments
| العنوان: | Image-based Lagrangian Particle Tracking in bed-load experiments |
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| المؤلفون: | A. Radice, S. Sarkar, F. Ballio |
| المساهمون: | Radice, A., Sarkar, S., Ballio, F. |
| سنة النشر: | 2017 |
| المجموعة: | RE.PUBLIC@POLIMI - Research Publications at Politecnico di Milano |
| مصطلحات موضوعية: | River hydraulics, sediment transport, bed-load, Lagrangian approach, laboratory experiments, image analysis, particle tracking |
| الوصف: | Image analysis has been increasingly used for the measurement of river flows due to its capabilities to furnish detailed quantitative depictions at a relatively low cost. This manuscript describes an application of particle tracking velocimetry (PTV) to a bed-load experiment with lightweight sediment. The key characteristics of the investigated sediment transport conditions were the presence of a covered flow and of a fixed rough bed above which particles were released in limited number at the flume inlet. Under the applied flow conditions, the motion of the individual bed-load particles was intermittent, with alternating movement and stillness terms. The flow pattern was preliminarily characterized by acoustic measurements of vertical profiles of the stream-wise velocity. During process visualization, a large field of view was obtained using two actioncameras placed at different locations along the flume. The experimental protocol is described in terms of channel calibration, experiment realization, image pre-processing, automatic particle tracking, and post-processing of particle track data from the two cameras. The presented proof-of-concept results include probability distributions of the particle hop length and duration. The achievements of this work are compared to those of existing literature to demonstrate the validity of the protocol. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000407455900046; volume:125; firstpage:1; lastpage:11; numberofpages:11; journal:JOURNAL OF VISUALIZED EXPERIMENTS; info:eu-repo/grantAgreement/EC/FP7/316546; http://hdl.handle.net/11311/1044942; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85024388371; https://www.jove.com/video/55874 |
| DOI: | 10.3791/55874 |
| الاتاحة: | http://hdl.handle.net/11311/1044942 https://doi.org/10.3791/55874 https://www.jove.com/video/55874 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.629BE021 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3791/55874 |
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