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RISCollision Interactions of Envelope Rossby Solitons in a Barotropic Atmosphere
Publisher: American Meteorological Society
Abstract: A theory is developed here to describe the propagation of nonlinear Rossby wave packets in a barotropic atmospheric model and their interactions by using the multiple-scale method. It is shown that the propagation of a ...
Ekman Pumping for Stratified Planetary Boundary Layers Adjacent to a Free Surface or Topography
Publisher: American Meteorological Society
Abstract: In this paper, the classic Ekman pumping formulas for the vertical flow out of a boundary layer are generalized for both the layer above a rigid surface of variable slope and also for the boundary layer underneath a moving ...
Free Net Analysis under Squared Error Loss
Publisher: American Society of Civil Engineers
Abstract: It is often desirable, especially in deformation surveys, to use a free net adjustment where minimal control is used. An alternative view of free net analysis is provided using the squared error loss criterion and compared ...
Review of Cave-In Failures of Urban Roadways in China: A Database
Publisher: ASCE
Abstract: In the past several years, the high frequency of cave-in failures of urban roadways has posed a serious threat to the safety of traffic, pedestrians, and existing structures and facilities in China, and they have often led ...
Cavitation-Vortex-Pressure Fluctuation Interaction in a Centrifugal Pump Using Bubble Rotation Modified Cavitation Model Under Partial Load
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Cavitation is a complicated phenomenon in the centrifugal pump. In this work, the improved unsteady calculation model based on bubble-rotation-based Zwart–Gerber–Belamri (BRZGB) cavitation model is used to investigate the ...
Simulations of Metal Oxidation in Lead Bismuth Eutectic at a Mesoscopic Level
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The corrosiveness of lead bismuth eutectic (LBE), as an ideal coolant candidate in reactors and accelerator driven systems (ADSs), presents a critical challenge for safe applications. One of the ...
Numerical Simulation of Traction in Rolling/Sliding Contacts
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new model of traction in elastohydrodynamically lubricated contact is presented to study shear stress distributions. Results of full numerical analyses of elliptical contacts under rolling and ...
Observed Behaviors of a Long and Deep Excavation Constructed by Cut-and-Cover Technique in Shanghai Soft Clay
Publisher: American Society of Civil Engineers
Abstract: A 16–18 m deep excavation for a metro station with in-plane dimensions of approximately 20 m wide by 290 m long was constructed by using the cut-and-cover technique in soft clay in the Shanghai metropolitan area, in which ...
Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay. I: Bottom-Up Construction of the Central Cylindrical Shaft
Publisher: American Society of Civil Engineers
Abstract: A large amount of field and experimental data has been devoted to rectangular excavations thus far. In contrast, very few data were available for cylindrical excavations, especially those with large diameters in thick soft ...
Full-Scale Testing of Open-Ended Steel Pipe Piles in Thick Varved Clayey Silt Deposits along the Delaware River in New Jersey
Publisher: American Society of Civil Engineers
Abstract: Although many studies have been done to investigate the axial behaviors of open-ended piles in sands, few studies have been reported for weak clayey silts. To develop reliable models for the design of open-ended steel-pipe ...