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Xiyang He, Chengyu Liu, Xiangxiang Zhang, Changyu Wu and Zhiyu Weng
In South China, due to climatic factors, highly weathered granite is distributed across a large area and easily disintegrates after encountering water, causing many geological disasters and other problems. To determine the disintegration mechanism of hig...
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Jerzy Zawisza, Iwona Radosz, Jaroslaw Biegowski and Leszek M. Kaczmarek
The paper presents results of experimental and theoretical studies on transport of water-sand mixtures in steady flow with small amounts of cohesive fractions. The experiments were carried out for sand alone and with cohesive admixtures in the form of cl...
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Aziz Amoozegar and Joshua L. Heitman
The most common method for in situ measurement of saturated hydraulic conductivity (Ksat) of the vadose zone is the constant head well permeameter method. Our general objective is to provide an empirical method for determining volume of water required fo...
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Hongwei An, Xiaoyuan Hu, Scott Draper, Liang Cheng, Binsar Lubis and Mehrdad Kimiaei
A physical model testing method to determine the hydrodynamic force coefficients of an object is proposed and applied to an articulated concrete mattress placed on a flat surface under steady current condition. The test setup, which comprises of a pulley...
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Xiaofan Lou, Chenlin Sun, Hongyi Jiang, Hongjun Zhu, Hongwei An and Tongming Zhou
The effects of yaw angle on wake characteristics of a stationary square cylinder were investigated in terms of the hydrodynamic forces, the vortex shedding frequency, and the vortical structures using direct numerical simulations (DNS) at a Reynolds numb...
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Naser Al Haddabi, Konstantinos Kontis and Hossein Zare-Behtash
Cavity flows occur in a wide range of low-speed applications (Mach number ≤0.3" role="presentation">=0.3=0.3
=
0.3
), such as aircraft wheel wells, ground transportation, and pipelines. In the current study, a steady jet is forced from a cavit...
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Andreas Strand, Ivar Eskerud Smith, Tor Erling Unander, Ingelin Steinsland and Leif Rune Hellevik
Uncertainty propagation is used to quantify the uncertainty in model predictions in the presence of uncertain input variables. In this study, we analyze a steady-state point-model for two-phase gas-liquid flow. We present prediction intervals for holdup ...
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Jian Hu, Zibin Wang, Wang Zhao, Shili Sun, Cong Sun and Chunyu Guo
This paper presents a numerical modeling procedure for the idealization of vortex shedding effects in the wake flow field of a NACA0009 hydrofoil. During the simulation, the lift and drag acting on the hydrofoil were monitored, and the vortex-shedding fr...
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Pietro Scandura, Carla Faraci and Paolo Blondeaux
The flow induced by progressive water waves propagating over a rippled bed is reproduced by means of the numerical solution of momentum and continuity equations to gain insights on the steady streaming induced in the bottom boundary layer. When the press...
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Tianlong Mei, Maxim Candries, Evert Lataire and Zaojian Zou
In this paper, an improved potential flow model is proposed for the hydrodynamic analysis of ships advancing in waves. A desingularized Rankine panel method, which has been improved with the added effect of nonlinear steady wave-making (NSWM) flow in fre...
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Alu Si, Jiquan Zhang, Yichen Zhang, Emmanuel Kazuva, Zhenhua Dong, Yongbin Bao and Guangzhi Rong
Debris flow events often pose significant damage and are a threat to infrastructure and even livelihoods. Recent studies have mainly focused on determining the susceptibility of debris flow using deterministic or heuristic/probabilistic models. However, ...
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Woo-Dong Lee, Hyo-Jae Jo, Han-Sol Kim, Min-Jun Kang, Kwang-Hyo Jung and Dong-Soo Hur
Herein, hydraulic model experiments and numerical simulations were performed to understand the self-burial mechanism of subsea pipelines with spoilers under steady flow conditions. First, scour characteristics and self-burial functions according to the s...
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Liquan Xie, Yehui Zhu and Tsung-Chow Su
The intersection of the span shoulder and the scour hole under a pipeline, also called the scour front, can affect the scour hole extension rate and the bearing capacity of the span shoulder, which is associated with pipeline spanning and failure. Studie...
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Adam Szymkiewicz, Anna Gumula-Kawecka, Dawid Potrykus, Beata Jaworska-Szulc, Malgorzata Pruszkowska-Caceres and Wioletta Gorczewska-Langner
Estimation of contaminant travel time through the vadose zone is needed for assessing groundwater vulnerability to pollution, planning monitoring and remediation activities or predicting the effect of land use change or climate change on groundwater qual...
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Kevin Oudenbroek, Nader Naderi, Jeremy D. Bricker, Yuguang Yang, Cor Van der Veen, Wim Uijttewaal, Shuji Moriguchi and Sebastiaan N. Jonkman
In countries with steep rivers, such as Japan and the United States, bridges fail on an annual basis. Bridges on spread footings are especially susceptible to failure by hydrodynamic loading, often exacerbated by debris damming. Here, such failures are i...
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Houssem Laidoudi, Mohamed Bouzit
Pág. 42 - 50
In this paper, two-dimensional simulations are carried out to understand the effects of aiding and opposing thermal buoyancy on the downward flow and heat transfer characteristics around a heated/cold circular cylinder confined in vertical channel. The n...
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Xin Liu, Hongbin Zhan
Pág. 1 - 15
Evaporation from soil columns in the presence of a water table is a long lasting subject that has received great attention for many decades. Available analytical studies on the subject often involve an assumption that the potential evaporation rate is mu...
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Zhongfan Zhu, Jingshan Yu, Hongrui Wang, Jie Dou and Cheng Wang
The morphological properties of kaolin flocs were investigated in a Couette-flow experiment at the steady state under seven shear flow conditions (shear rates of 5.36, 9.17, 14, 24, 31, 41 and 53 s-1). These properties include a one-dimensional (1-D) fra...
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Zhongfan Zhu, Jingshan Yu, Hongrui Wang, Jie Dou and Cheng Wang
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