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| Titel: |
A turbulent channel flow apparatus for the determination of the adhesion strength of microfouling organisms |
| Auteur: |
Schultz, Michael P. Finlay, John A. Callow, Maureen E. Callow, James A. |
| Verschenen in: |
Biofouling |
| Paginering: | Jaargang 15 (2000) nr. 4 pagina's 243-251 |
| Jaar: |
2000-09 |
| Inhoud: |
The development of novel, fouling-release surfaces has led to the need for better test methods to evaluate their performance. A water channel has been designed to measure the adhesion strength of microfouling organisms to test surfaces. The apparatus allows six replicate microscope slides to be mounted in a fully-developed, turbulent channel flow. Wall shear stress in the test section can be varied from 0.9-30 Pa over a Reynolds number range of 2,800 to 27,000 based on the bulk mean velocity and channel height. Calibration of the device indicates that the accuracy and repeatability in the wall shear stress is within 4% throughout the range. Experiments using the fouling diatom Amphora settled on acid-washed glass slides are presented. The results show significant differences in the shear stress required to remove Amphora cells with settlement time. No significant differences among the replicate slides were observed, indicating flow uniformity in the test section. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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