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Charles R. Ortloff
High-speed fluid flows over roughened surfaces occur in many engineering applications; one important application involves high velocity water flows in pipelines with roughened interior walls where the wall roughness affects head loss estimates necessary ...
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Ji-Hong Li, Mun-Jik Lee, Hyungjoo Kang, Min-Gyu Kim and Gun Rae Cho
ROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and ...
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Haixiao Jing, Yanyan Gao, Changgen Liu and Jingming Hou
Understanding the propagation of landslide-generated water waves is of great help against tsunami hazards. In order to investigate the effects of landslide shapes on the far-field leading wave generated by a submerged landslide at a constant depth, three...
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Feidong Zheng, Yun Li, Guoxiang Xuan, Zhonghua Li and Long Zhu
A positive surge is an unsteady open channel flow motion characterized by an increase of flow depth. In previous experimental studies, a positive surge was typically induced by either a sudden increase of discharge in a channel or by the rapid closure of...
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Roberta Padulano, Giuseppe Del Giudice and Armando Carravetta
An experimental campaign is undertaken in order to investigate the hydraulic features of a vertical drop shaft, also considering the influence of a venting system consisting of a coaxial vertical pipe, projecting within the drop shaft with different plun...
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Indratmo Soekarno
Pág. pp. 8 - 14
Side weir is a type of protection structure which function is to protect channels from damage caused by excessive amount of water (overtopping) so the water level in channels or rivers is to be preserved. The type is spatially varied flow with decrease o...
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Ruigeng Hu, Xiuhai Wang, Hongjun Liu and Yao Lu
A series of laboratory experiments were conducted in a wave-current flume to investigate the scour evolution and scour morphology around tripod in combined waves and current. The tripod model was made using the 3D printing technology, and it was installe...
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Thi-Hong-Nhi Vuong, Tso-Ren Wu, Chun-Yu Wang and Chia-Ren Chu
This paper aims to develop a landslide model to simulate the tsunamis generated by slump-type landslides. The Bingham rheology model is integrated into the Navier?Stokes solver to simulate the landslide movements in both in-land and ocean areas. The mode...
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Guangyu Shi, Alexandros Priftis, Yan Xing-Kaeding, Evangelos Boulougouris, Apostolos D. Papanikolaou, Haibin Wang and Geoff Symonds
This paper numerically investigates the resistance at full-scale of a zero-emission, high-speed catamaran in both deep and shallow water, with the Froude number ranging from 0.2 to 0.8. The numerical methods are validated by two means: (a) Comparison wit...
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Daniele Chiappini
In this study, the capabilities of a coupled KBC-free surface model to deal with fluid solid interactions with the slamming of rigid obstacles in a calm water tank were analyzed. The results were firstly validated with experimental and numerical data ava...
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Raed Bashitialshaaer, Magnus Larson and Kenneth M. Persson
An experimental study was performed to investigate the behavior of inclined negatively buoyant jets. Such jets arise when brine is discharged from desalination plants. A turbulent jet with a specific salinity was discharged through a circular nozzle at a...
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Shengchun Tong, Guorong Li, Jinfang Li, Xilai Li, Chengdong Jiang, Jianyun Zhao, Haili Zhu, Yabin Liu, Wenting Chen and Xiasong Hu
The plateau pika (Ochotona curzoniae) actively contributes to soil erosion and meadow degradation in western China?s Yellow River source zone. This study aimed to elucidate the effects of the pika mound numbers on the hydrodynamic characteristics and soi...
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Ruigeng Hu, Hongjun Liu, Hao Leng, Peng Yu and Xiuhai Wang
A series of numerical simulation were conducted to study the local scour around umbrella suction anchor foundation (USAF) under random waves. In this study, the validation was carried out firstly to verify the accuracy of the present model. Furthermore, ...
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CHUNG-MUH TANG
An analytical theory of two-level, moist, quasi-geostrophic baroclinic waves with meridional variation, but without the fl-effect, is developed. The formulation is similar to that of Tang and Fichtl (1983) except that the meridional variation of the ...
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Mubbashar Nazeer, Waqas Ali and Farooq Hussain
Problem statement: The study offers theoretical formulations for high-viscosity particulate flows in inclined reservoirs, taking into account the presence of homogeneous spheroidal particles of various types to produce discrete two-phase suspensions. Pur...
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Eugene Retsinis and Panos Papanicolaou
The transition from supercritical to subcritical flow around a fully submerged abrupt negative step in a horizontal rectangular open channel has been investigated. In a laboratory experiment the one-dimensional energy and the momentum conservation equati...
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Pangpang Chen, Jueyi Sui, Guangxue Cao and Tiejie Cheng
Ice jam is a unique hydrological phenomenon in rivers in cold regions. The appearance of an ice jam in a river results in an increase in the wetted perimeter of the flow cross-section, and thus an increase in flow resistance as well as water level. It ma...
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Jingzhou Zhang, Shengtang Zhang, Si Chen, Ming Liu, Xuefeng Xu, Jiansen Zhou, Wenjun Wang, Lijun Ma and Chuantao Wang
To explore the characteristics of overland flow resistance under the condition of sparse vegetative stem coverage and improve the basic theoretical research of overland flow, the resistance characteristics of overland flow were systematically investigate...
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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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Juan T. García, Luis G. Castillo, José M. Carrillo and Patricia L. Haro
Flow over bottom racks is highly turbulent, three-dimensional and spatially varied. The design of bottom intake systems has mainly been studied in the laboratory. The comparison of existing experimental studies shows large deviations in the definition of...
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