Search
CSV
RISSpectra of Scalar-Flux and Stress Fluctuations in the Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: In a turbulent flow, the instantaneous turbulent flux and stress fluctuate in time and space. In large-eddy simulations (LES), the subgrid-scale (SGS) flux and stress are also time and space dependent, and their fluctuations ...
Monin–Obukhov Similarity and Local-Free-Convection Scaling in the Atmospheric Boundary Layer Using Matched Asymptotic Expansions
Publisher: American Meteorological Society
Abstract: AbstractThe Monin?Obukhov similarity theory (MOST) is the foundation for understanding the atmospheric surface layer. It hypothesizes that nondimensional surface-layer statistics are functions of only, where z and L are ...
Multipoint Monin–Obukhov Similarity and Its Application to Turbulence Spectra in the Convective Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: generalized Monin?Obukhov similarity hypothesis for the atmospheric surface layer is proposed. It employs the Monin?Obukhov length as a length scale in both the horizontal and vertical directions, in contrast to the original ...
Whirlwinds and Hairpins in the Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: ortices in the atmospheric surface layer are characterized using observations at unprecedented resolution from a fixed array of 31 turbulence sensors. During the day, these vortices likely are dust devils, though no visual ...
Integrated Approach to Vehicle Scheduling and Bus Timetabling for an Electric Bus Line
Publisher: ASCE
Abstract: Timetable and vehicle scheduling are important for transit operations. Electric buses are more environmentally friendly compared with conventional buses, and have been developing rapidly and may replace conventional buses ...
Setting Maximum Incentive for Incentive/Disincentive Contracts for Highway Projects
Publisher: American Society of Civil Engineers
Abstract: An increasing number of State Highway Agencies (SHAs) are utilizing Incentive/Disincentive (I/D) bidding for highway construction. The I/D bidding concept is designed to shorten the total contract time by giving the ...
Models for Temperature-Kinetic Aspect of Friction and Wear in Oil Lubrication
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experiments were conducted using a gear-cam adapter to simulate line-contact lubrication and wear in a lubricant with various additive concentrations. In this study, the growth of an adsorption ...
Effect of Sulfate on Anaerobic Degradation of Benzoate in UASB Reactors
Publisher: American Society of Civil Engineers
Abstract: Wastewaters containing benzoate and sulfate were treated in two upflow anaerobic sludge blanket (UASB) reactors at 34–37°C for 320 d. The sulfate concentration was increased stepwise in Reactor-A up to 7,500 mg/L, and was ...
Time Is Money: Innovative Contracting Methods in Highway Construction
Publisher: American Society of Civil Engineers
Abstract: In today's highway construction industry, the focus has shifted from building new transportation facilities to resurfacing, rehabilitating and restoring (3R's) those already in existence. These types of projects create a ...
Experimental Study of the Subgrid-Scale Stresses in the Atmospheric Surface Layer
Publisher: American Meteorological Society
Abstract: In a large eddy simulation of the atmospheric boundary layer, results near the surface suffer from major deficiencies of the subgrid-scale (SGS) model due to inherently insufficient resolution there. However, efforts to ...