Prediction of flow around a sharp-nosed bridge pier: influence of the Froude number and free-surface variation on the flow field

Prediction of flow around a sharp-nosed bridge pier: influence of the Froude number and free-surface variation on the flow field
复制标题

尖头桥墩周围流动的预测:弗劳德数和自由表面变化对流场的影响

DOI:
10.1080/00221686.2019.1631223
复制
发表时间:
2019
影响因子:
2.3
通讯作者:
Kahraman R
Kahraman R
中科院分区:
工程技术3区
文献类型:
--
作者:
Kahraman R

文献摘要

参考文献

被引文献

相似文献

本研究探讨自由表面的变化对速度场的影响,采用数值模拟的流动周围的尖头墩,是一个典型的砖石桥墩。该研究通过比较由于使用自由表面模型(即多相模拟与流体体积(VOF)模型代替刚性盖近似(即单相模拟))而导致的流场预测变化,评估了自由表面效应在小弗劳德数时可忽略不计的假设。结果表明,VOF模型的模拟结果与实验数据吻合较好。重要的是,结果表明,即使在码头附近的自由表面高度的变化是小的比较接近流,它仍然有一个显着的影响,在码头和尾流区,包括在低弗劳德数的前面的速度。
This study investigates the influence of free-surface variation on the velocity field using numerical simulations of flow around a sharp-nosed pier that is representative of a typical masonry bridge pier. The study evaluates the assumption that free-surface effects are negligible at small Froude numbers by comparing the change in flow field predictions due to the use of a free-surface model (i.e. multi-phase simulation with a volume of fluid (VOF) model in place of a rigid-lid approximation (i.e. single phase simulation). Results show that simulations using the VOF model are in better agreement with experimental data than those using the rigid-lid approximation. Importantly, results show that even though the change in free-surface height near the pier is small comparative to the approach flow, it still has a significant effect on velocities in front of the pier and in the wake region, and including at low Froude numbers.
雷诺平均双流体模型预测向后台阶上的适度稀释的流体-颗粒流
DOI: --
发表时间: 2018
影响因子: 3.8
作者:
M. Riella;R. Kahraman;G. Tabor
通讯作者: G. Tabor
DOI: 10.1016/0021-9991(92)90240-y
发表时间: 1992-06-01
影响因子: 4.1
作者:
BRACKBILL, JU;KOTHE, DB;ZEMACH, C
通讯作者: ZEMACH, C
DOI: 10.1063/1.168744
发表时间: 1998-11-01
期刊: COMPUTERS IN PHYSICS
影响因子: --
作者:
Weller, HG;Tabor, G;Fureby, C
通讯作者: Fureby, C
基于嵌套网格的计算流体动力学模型来预测桥墩冲刷
DOI: --
发表时间: 2014
期刊:
影响因子: --
作者:
S. Baranya;N. Olsen;T. Stoesser;T. Sturm
通讯作者: T. Sturm
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
S. Azizi;D. Farsadizadeh;H. Arvanaghi;A. Abbaspour
通讯作者: A. Abbaspour