Manometer tubes for monitoring coastal water levels: New frequency response factors

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Title Manometer tubes for monitoring coastal water levels: New frequency response factors
Author Jafari, Alireza; Cartwright, Nick; Nielsen, P.
Journal Name Coastal Engineering
Editor E.W. Bijker Maassluis, Netherlands
Year Published 2012
Place of publication Netherlands
Publisher Elsevier BV
Abstract This paper presents findings of new laboratory experiments on the frequency response of semi-rigid manometer tubes for use in monitoring coastal hydrodynamic processes, extending and improving upon the previous work of Nielsen et al. (1993). An adjustable speed rotary electromotor was used to drive a known water level variation at one end of the tube and the pressure was measured at both ends of the tube, enabling a direct determination of the tube's frequency response. Testing was conducted over a range of frequencies (0.0067 Hzbf b2 Hz) and tube lengths (10 mbLb900 m). New frequency response factors were determined by fitting the semi-empirical gain function equation of Nielsen et al. (1993) to the observed gain data. New predictive formulas for the empirical coefficients are provided which yields substantial improvements over the existing constants deduced by Nielsen et al. (1993).
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2012 Elsevier B.V.. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 66
Page from 35
Page to 39
ISSN 0378-3839
Date Accessioned 2012-05-04
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Civil Engineering
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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