Data concerning the hydrodynamic advantages of arching sea stars modeled in a hydraulics flume.

Arched and flat model sea stars were used in a recirculating flow hydraulics flume to assess flow velocities. Methods employed were: using a fluorometer to detect injected rhodamine dye, acoustic Doppler velocimeter to detect mean and shear velocities to a depth of 35mm above the substrate, DPIV using glass microspheres to detect velocities closer to the substrate.

Civil engineering and built environment
Marine environments

Cite this dataset as:
Dams, B., 2017. Data concerning the hydrodynamic advantages of arching sea stars modeled in a hydraulics flume. Bath: University of Bath Research Data Archive. Available from:


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Barrie Dams
University of Bath


University of Bath
Rights Holder


Collection date(s):

From February 2015 to April 2016

Temporal coverage:

From February 2015 to April 2016

Geographical coverage:

University of Bath hydraulics flume


Data collection method:

The experimental work was undertaken in a unidirectional flow channel measuring 7.50 m long and 0.30 m wide. Flow rate was controlled using a pump and two depth-averaged flow velocities (flow velocity averaged over the entire depth of the water column) were investigated. These were 0.10 ms-1 and 0.25 ms-1 and corresponded to relatively “low” and "high” turbulence cases. A sluice gate located downstream of the experimental section was used to control the water depth, which was set at 0.15 m or 0.30 m during the experiment. Dye concentration was measured at four positions downstream of the model along the flume centreline using a Turner Designs C3 Submersible Fluorometer sampled at 1 Hz. A Nortek Vector Acoustic Doppler Velocimeter (ADV) was used to obtain direct point measurements of flow velocity through the flume cross-section, a distance 80 mm downstream of the model centre (Fig. 2). Measurements of all three velocity components (x – along-flume, y – cross-flume, z - vertical) were obtained for both depth-averaged flow velocities at 35 mm vertical intervals at three cross-flume measurement locations. Velocity data was recorded for a 15 second period at each instrument location.



Publication details

Publication date: 2017
by: University of Bath

Version: 1


URL for this record:

Related papers and books

Dams, B., Blenkinsopp, C. E., and Jones, D. O.B., 2018. Behavioural modification of local hydrodynamics by asteroids enhances reproductive success. Journal of Experimental Marine Biology and Ecology, 501, 16-25. Available from:

Contact information

Please contact the Research Data Service in the first instance for all matters concerning this item.

Contact person: Barrie Dams


Faculty of Engineering & Design
Architecture & Civil Engineering