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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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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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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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Ana-Maria Chirosca, Antonio Medina, Florin Pacuraru, Simone Saettone, Liliana Rusu and Sandita Pacuraru
Reducing the added resistance in waves has become a crucial aspect of today?s ship design. The added resistance in waves is traditionally considered proportional to the square of wave height. However, this assumption is believed to be only partly valid, ...
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Xiaoqing Tian, Tianwei Xie, Zhangming Liu, Xianghua Lai, Huachen Pan, Chizhong Wang, Jianxing Leng and M. M. Rahman
The resistance of a large Pure Car Truck Carrier (PCTC) with a bulbous bow and a transom stern is evaluated in the present paper. Several cases at nine different ship speeds in calm water are simulated and results are compared with the experimental measu...
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Forough Alizadeh Sanami, Amir Ghaderi, Fardin Alizadeh Sanami, Parisa Mirkhorli and Silvia Di Francesco
A piano key weir (PKW), a new type of weir aiming to increase the discharge capacity of an existing dam, was recently designed. Despite a large body of research in this field, only a few studies were conducted on A-type triangular piano key weirs (TPKW) ...
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Alessio Nicosia, Francesco Giuseppe Carollo and Vito Ferro
Flow resistance in gravel-bed channels is not only affected by the shape and size of the roughness elements, but also by their arrangement on the channel bed surface (position to flow streamlines, spacing between elements, and their protrusion from the c...
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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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Igor Shugan and Yang-Yih Chen
The ship?s wake in the presence of a shear flow of constant vorticity at a finite water depth is investigated by expanding the Whitham-Lighthill kinematic theory. It has been established that the structure of a wave ship wake radically depends on Froude ...
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