یازدهمین کنفرانس بین المللی توسعه پایدار و عمران شهری , 2021-12-15

Title : ( Dam-break flow regime over mobile beds, a numerical CFD approach )

Authors: Hossein Banejad ,

Citation: BibTeX | EndNote

Abstract

In this paper, the effect of the sediment bed elevation on dam-break flow over mobile beds is scrutinized using the volume of fluid (VOF) method. While the equations of motion are tackled employing the finite-volume, standard k-ε closure model and the van Rijn bed load formula. The results show that an increase in the downstream bed elevation leads to reducing: a) the flow advancing distance and water rising over the end wall, b) the sediment transport rate downstream and c) the reservoir releasing rate. Further, the decrease in level-difference results in in-creasing the sheet-flow height. However, it does not affect the critical specific downstream of the dam. It causes the formation and evolution of two hydraulic jumps and scour holes in the near field and the downstream channel. The dimen-sions of the first scour hole are larger than the second one.

Keywords

, Keywords Dam-break, Bed elevation, RANS, Mobile-bed, VOF.
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@inproceedings{paperid:1089814,
author = {Banejad, Hossein},
title = {Dam-break flow regime over mobile beds, a numerical CFD approach},
booktitle = {یازدهمین کنفرانس بین المللی توسعه پایدار و عمران شهری},
year = {2021},
location = {اصفهان, IRAN},
keywords = {Keywords Dam-break; Bed elevation; RANS; Mobile-bed; VOF.},
}

[Download]

%0 Conference Proceedings
%T Dam-break flow regime over mobile beds, a numerical CFD approach
%A Banejad, Hossein
%J یازدهمین کنفرانس بین المللی توسعه پایدار و عمران شهری
%D 2021

[Download]