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A TRANSITION-LOSS THEORY FOR WAVES REFLECTED AND TRANSMITTED BY AN OVERWASHED BODY.

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Title: A TRANSITION-LOSS THEORY FOR WAVES REFLECTED AND TRANSMITTED BY AN OVERWASHED BODY.
Authors: SKENE, DAVID M.1 david.skene@adelaide.edu.au, BENNETTS, LUKE G.2 luke.bennetts@adelaide.edu.au
Source: SIAM Journal on Applied Mathematics. 2021, Vol. 81 Issue 3, p834-852. 19p.
Subjects: Potential flow, Conservation of energy, Wave energy, Energy dissipation, Hydraulic jump, Mechanical energy
Abstract: A transition-loss theory for waves reflected by an overwashed step and transmitted by an overwashed plate is presented. The theory is based on a conservation of energy technique to correct the transmission/reflection predicted by linear potential flow theory by taking into account the energy flux into the overwash and the mechanical energy dissipated by the formation of overwash. Wave energy dissipation is calculated by assuming that the transition from deep water to shallow water flow occurs over a sufficiently narrow domain such that it can be modeled as a discontinuity in the flow (akin to a hydraulic jump). Theoretical predictions are compared to CFD model data for the step problem and laboratory experimental measurements for the plate problem. Generally, excellent agreement is found for all cases tested, and the theory gives significant improvements compared to linear models that do not capture overwash effects and a theory that does not account for energy loss in the transition domain. [ABSTRACT FROM AUTHOR]
Copyright of SIAM Journal on Applied Mathematics is the property of Society for Industrial & Applied Mathematics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: A TRANSITION-LOSS THEORY FOR WAVES REFLECTED AND TRANSMITTED BY AN OVERWASHED BODY.
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  Data: <searchLink fieldCode="AR" term="%22SKENE%2C+DAVID+M%2E%22">SKENE, DAVID M.</searchLink><relatesTo>1</relatesTo><i> david.skene@adelaide.edu.au</i><br /><searchLink fieldCode="AR" term="%22BENNETTS%2C+LUKE+G%2E%22">BENNETTS, LUKE G.</searchLink><relatesTo>2</relatesTo><i> luke.bennetts@adelaide.edu.au</i>
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  Data: <searchLink fieldCode="JN" term="%22SIAM+Journal+on+Applied+Mathematics%22">SIAM Journal on Applied Mathematics</searchLink>. 2021, Vol. 81 Issue 3, p834-852. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Potential+flow%22">Potential flow</searchLink><br /><searchLink fieldCode="DE" term="%22Conservation+of+energy%22">Conservation of energy</searchLink><br /><searchLink fieldCode="DE" term="%22Wave+energy%22">Wave energy</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+jump%22">Hydraulic jump</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+energy%22">Mechanical energy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A transition-loss theory for waves reflected by an overwashed step and transmitted by an overwashed plate is presented. The theory is based on a conservation of energy technique to correct the transmission/reflection predicted by linear potential flow theory by taking into account the energy flux into the overwash and the mechanical energy dissipated by the formation of overwash. Wave energy dissipation is calculated by assuming that the transition from deep water to shallow water flow occurs over a sufficiently narrow domain such that it can be modeled as a discontinuity in the flow (akin to a hydraulic jump). Theoretical predictions are compared to CFD model data for the step problem and laboratory experimental measurements for the plate problem. Generally, excellent agreement is found for all cases tested, and the theory gives significant improvements compared to linear models that do not capture overwash effects and a theory that does not account for energy loss in the transition domain. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of SIAM Journal on Applied Mathematics is the property of Society for Industrial & Applied Mathematics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1137/20M1386979
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        Text: English
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        PageCount: 19
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        Type: general
      – SubjectFull: Conservation of energy
        Type: general
      – SubjectFull: Wave energy
        Type: general
      – SubjectFull: Energy dissipation
        Type: general
      – SubjectFull: Hydraulic jump
        Type: general
      – SubjectFull: Mechanical energy
        Type: general
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      – TitleFull: A TRANSITION-LOSS THEORY FOR WAVES REFLECTED AND TRANSMITTED BY AN OVERWASHED BODY.
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              Text: 2021
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