Comparative study on calculation methods of dam-break wave. Issue 5 (3rd September 2019)

• Record Type: Journal Article
• Authors: Yang, Shaolin; Yang, Wanli; Qin, Shunquan; Li, Qiao
• Is Part Of: Journal of hydraulic research. Volume 57:Issue 5(2019)
• Page Start: 702
• Page End: 714
• Publication Date: 2019-09-03
• Subjects: Dam-break wave -- Euler equations -- FLOW-3D -- Reynolds-averaged Navier–Stokes equations -- turbulence model -- wave propagation; Hydraulics -- Research -- Periodicals; Hydraulic engineering -- Periodicals; Hydraulic engineering; Electronic journals; Periodicals; 621.2
• DOI: 10.1080/00221686.2018.1494057
• Languages: English
• ISSNs: 0022-1686

Abstract

ABSTRACT: This paper presents systematic comparisons of dam-break wave generation and propagation between numerical solutions of RANS equations with three different turbulence models (standard k – ε, RNG k – ε and k – ω ), numerical solutions of Euler equations, analytical solutions and experimental data from literature for both dry-bed and wet-bed cases. Results show that numerical solutions of RANS equations with the three different turbulence models can accurately calculate the whole process of dam-break wave propagating over both dry-bed and wet-bed. Numerical solutions of Euler equations show remarkable discrepancies compared with the experimental data in dry-bed condition, but can predict the dam-break wave well in wet-bed conditions. The merits and demerits of the calculation methods are discussed in full and their application scopes are suggested.