APPLICATION OF WAF METHOD IN NUMERICAL SIMULATION OF ROLL WAVES

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MAHDAVI A.; TALEBBEYDOKHTI N.

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Journal: Ferdowsi Civil Engineering Year:2014 | Volume:25 | Issue:1 Page(s): 43-58

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Title

APPLICATION OF WAF METHOD IN NUMERICAL SIMULATION OF ROLL WAVES

Author(s)

MAHDAVI A. | TALEBBEYDOKHTI N. | Issue Writer Certificate

Keywords

NONLINEAR SHALLOW WATER EQUATIONSQ2

ROLL WAVEQ2

SHOCK CAPTURING SCHEMEQ2

WEIGHTED AVERAGE FLUXQ2

Abstract

In this paper, the WEIGHTED AVERAGE FLUX (WAF) method is used to investigate the development and propagation of ROLL WAVEs in inclined steep channels. In fact, the WAF method improves the accuracy of the classic HLL scheme in evaluating numerical interface fluxes. The present shallow water solver is capable of efficiently capturing flow discontinuities associated with ROLL WAVEs. In addition, it provides a robust approach to eliminate the numerical instabilities due to small water depths usually encountered in ROLL WAVE modeling. The simulated free surface profile and flow velocity show very satisfactory agreement with available analytical solution. The numerical results for time evolution of wave amplitude under different undisturbed Froude numbers are compared with those obtained by another numerical model. Comparisons are also made between water depth time histories computed by these two models. The observed agreement implies the efficiency and accuracy of the present scheme while it is relatively simpler in computer implementation and consumes shorter simulation run times.

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APA: Copy

MAHDAVI, A., & TALEBBEYDOKHTI, N.. (2014). APPLICATION OF WAF METHOD IN NUMERICAL SIMULATION OF ROLL WAVES. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), 25(1), 43-58. SID. https://sid.ir/paper/195887/en

Vancouver: Copy

MAHDAVI A., TALEBBEYDOKHTI N.. APPLICATION OF WAF METHOD IN NUMERICAL SIMULATION OF ROLL WAVES. JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING)[Internet]. 2014;25(1):43-58. Available from: https://sid.ir/paper/195887/en

IEEE: Copy

A. MAHDAVI, and N. TALEBBEYDOKHTI, “APPLICATION OF WAF METHOD IN NUMERICAL SIMULATION OF ROLL WAVES,” JOURNAL OF CIVIL ENGINEERING (JOURNAL OF SCHOOL OF ENGINEERING), vol. 25, no. 1, pp. 43–58, 2014, [Online]. Available: https://sid.ir/paper/195887/en

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