Development of a PTV algorithm for measuring sediment-laden flows

Kwonkyu Yu; Marian Muste; Robert Ettema; Byungman Yoon

doi:10.3741/JKWRA.2005.38.10.841

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Development of a PTV algorithm for measuring sediment-laden flows

Journal article

Open access

Development of a PTV algorithm for measuring sediment-laden flows

Kwonkyu Yu, Marian Muste, Robert Ettema and Byungman Yoon

Journal of Korea Water Resources Association, Vol.38(10), pp.841-849

10/2005

DOI: 10.3741/JKWRA.2005.38.10.841

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https://doi.org/10.3741/JKWRA.2005.38.10.841View

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Abstract

Two-phase flows, e.g. sediment-laden flow and bubbly flow, have two different flow profiles; flow velocity and sediment velocity. To measure velocity distributions of two-phase flows, it is necessary to use sophisticated instruments which can separate velocity profiles of two-phases. For bubbly flows, PIV (Particle Image Velocimetry) or PTV (Particle Tracking Velocimetry) has given fairly good velocity profiles of two-phases. However, for sediment-laden flows, the applications of PIV or PTV has not been so successful, because the sediment particles introduced to the flow kept the images from being analyzed. A new algorithm, which consists of several image analysis methods, is proposed to analyze sediment-laden flows. For detection algorithm, threshold method, edge detection method, and thinning method are adapted, and for finding matching pair PIV and PTV routines are combined. The proposed method can (1) detect sediment particles with irregular boundaries, (2) remove reflected images and scattered images, and (3) discriminate tracer particles from reflected images of sediment particles.

Algorithms

Hydrogeology

Hydrology

flows

image analysis

measurement

particle tracking velocimetry

particles

PTV

rivers and streams

sediment transport

stream transport

velocity

Details

Title: Subtitle: Development of a PTV algorithm for measuring sediment-laden flows
Creators: Kwonkyu Yu - University of Iowa, Institute of Hydrological Research Iowa City, IA USA United States
Marian Muste
Robert Ettema
Byungman Yoon
Resource Type: Journal article
Publication Details: Journal of Korea Water Resources Association, Vol.38(10), pp.841-849
DOI: 10.3741/JKWRA.2005.38.10.841
ISSN: 1226-6280
eISSN: 2287-6138
Publisher: Korea Water Resources Association
Language: English; Korean
Date published: 10/2005
Academic Unit: IIHR--Hydroscience and Engineering; Geographical and Sustainability Sciences
Record Identifier: 9984479261902771

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