Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

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2008, Volume15

Issue 1

80 pages

DOI: 10.1615/JFlowVisImageProc.v15.i1

Issue price - $175.00

B. S. Mazumder
Fluvial Mechanics Laboratory Physics and Applied Mathematics Unit Indian Statistical Institute Kolkata - 700108, India

Anindita Bhattacharyya
Fluvial Mechanics Laboratory, Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata 700108, India

Satya P. Ojha
Fluvial Mechanics Laboratory Physics and Applied Mathematics Unit Indian Statistical Institute Kolkata - 700108, India

The objective of this paper is to examine the behavior of particle movement due to near-bed turbulence over the rough bed surface in an open channel flow. The fluid velocity components with fluctuations are measured by 3D Micro-acoustic Doppler velocimeter (ADV) and subsequently, under given flow conditions images of released moving particles are recorded using a High-Speed Motion-Scope (HSMS) at the Fluvial Mechanics Laboratory of the Indian Statistical Institute, Calcutta. The recorded images are analyzed in the light of particle motions, trajectories, saltation heights and lengths of individual particles, angles of orientation and their interactions with the boundary using a digital image processing technique. The statistical distributions of the physical parameters of turbulence and particle motion have been discussed. The particle motion analysis at the near-bed turbulence using the image processing technique is a new emerging tool to the sediment sorting process.

DOI: 10.1615/JFlowVisImageProc.v15.i1.10 Download article, 1-15 pages

Article price - $35.00

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