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 language | English |
---|---|
Title of host publication | Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE |
Publisher | American Society of Mechanical Engineers |
Number of pages | 10 |
Volume | 7a |
ISBN (Electronic) | 9780791858844 |
DOIs | |
Publication status | Published - 11 Jan 2019 |
Event | ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019 - Glasgow, United Kingdom Duration: 9 Jun 2019 → 14 Jun 2019 |
Conference
Conference | ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019 |
---|---|
Country/Territory | United Kingdom |
City | Glasgow |
Period | 9/06/19 → 14/06/19 |
Keywords
- Dam break
- Green-Naghdi equations
- Initial mound of water
- Reynolds-Averaged Navier-Stokes equations
- Saint Venant equations
ASJC Scopus subject areas
- Ocean Engineering
- Energy Engineering and Power Technology
- Mechanical Engineering