On the Epper effect in towing tanks / P. Engel.: En13-5/93-67E-PDF

"Using dimensional analysis and basic wave theory, the wave conditions in a towing tank during current meter calibrations were examined. It has been shown that the existence of deep water waves and shallow water waves depends on the towing speed Froude number 𝐹. Deep water waves exist when 𝐹 < 0.6 and shallow water waves exist when 𝐹 > 0.6. It was further shown, that when the towing speed approaches the velocity of a shallow water wave, current meters measure a velocity less than the towing speed, with the maximum deficit occurring when 𝐹 = 1. This phenomenon is known as the Epper effect. In the NWRI towing tank, the Epper effect occurs when the towing speed is 5.2 m/s"--Abstract, page iii.

Permanent link to this Catalogue record:
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Publication information
Department/Agency Canada. Environment Canada.
National Water Research Institute (Canada). Research and Applications Branch.
Title On the Epper effect in towing tanks / P. Engel.
Series title NWRI contribution ; no. 93-67
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Digitized edition from print [produced by Environment and Climate Change Canada].
Includes bibliographical references (pages 5-6).
Includes summaries and abstracts in English and French.
Publishing information Burlington, Ontario : Research and Applications Branch, National Water Research Institute, [1993]
Author / Contributor Engel, Peter, 1938- author.
Description 1 online resource (v, 6 pages, 6 unnumbered pages) : illustrations.
Catalogue number
  • En13-5/93-67E-PDF
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