Bore pressure on horizontal and vertical surfaces

Jiaqi Liu, Masoud Hayatdavoodi, R. Cengiz Ertekin

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Abstract

Bores generated by dam-break and initial mound of water and their propagation over horizontal and inclined surfaces are studied by use of theoretical approaches. Calculations are carried out in two and three dimensions and particular attention is given to the bore impact on horizontal and vertical surfaces. Downstream of the initial mound of water may be wet or dry. Discussion is provided on the influence of the downstream water on the bore behaviour and impact. Three methods are used in this study, namely the Reynolds-Averaged Navier-Stokes equations (RANS), the Green-Naghdi (GN) equations and Saint Venant equations (SV). The governing equations subject to appropriate boundary conditions are solved with various numerical techniques. Results of these models are compared with each other, and with laboratory experiments when available. Discussion is given on the limitations and applicability of these models to study the bore generation, propagation and pressure on horizontal and vertical surfaces. It is found that the GN equations compare well with the RANS equations, while the SV equations have substantially simplified the solution.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
PublisherAmerican Society of Mechanical Engineers
Number of pages10
Volume7a
ISBN (Electronic)9780791858844
DOIs
Publication statusPublished - 11 Jan 2019
EventASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019 - Glasgow, United Kingdom
Duration: 9 Jun 201914 Jun 2019

Conference

ConferenceASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019
CountryUnited Kingdom
CityGlasgow
Period9/06/1914/06/19

Keywords

  • Dam break
  • Green-Naghdi equations
  • Initial mound of water
  • Reynolds-Averaged Navier-Stokes equations
  • Saint Venant equations

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    Liu, J., Hayatdavoodi, M., & Cengiz Ertekin, R. (2019). Bore pressure on horizontal and vertical surfaces. In Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE (Vol. 7a). [V07AT06A008] American Society of Mechanical Engineers. https://doi.org/10.1115/OMAE2019-96013