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The QUAL II Model
Publisher: American Society of Civil Engineers
Abstract: QUAL II, a stream model developed for the U.S. Environmental Protection Agency integrates a set of simultaneous differential equations representing the evolution of certain constituents over time. It is shown that whenever ...
Fundamental Mode Estimation for Modern Cable-Stayed Bridges Considering the Tower Flexibility
Publisher: American Society of Civil Engineers
Abstract: The design of cable-stayed bridges is typically governed by the dynamic response. This work provides designers with essential information about the fundamental vibration modes, proposing analytical expressions based on the ...
Dynamics and Seismic Performance of Bridges with Rocking Piers of Nonconventional Configuration
Publisher: ASCE
Abstract: The present study focuses on the seismic response of bridges with rocking piers of nonconventional shape, combining the inherent benefits of rocking isolation and accelerated bridge construction. The governing equations ...
Dynamic Effects of Turbulent Crosswind on the Serviceability State of Vibrations of a Slender Arch Bridge Including Wind–Vehicle–Bridge Interaction
Publisher: American Society of Civil Engineers
Abstract: The use of high-performance materials in bridges is leading to structures that are more susceptible to wind- and traffic-induced vibrations due to the reduction in the weight and the increment of the slenderness in the ...
Wind Turbine Tower Failure Modes under Seismic and Wind Loads
Publisher: American Society of Civil Engineers
Abstract: This paper studies the structural responses and failure modes of a 1.5-MW horizontal-axis wind turbine under strong ground motions and wind loading. Ground motions were selected and scaled to match the two design response ...
Dynamics and Seismic Performance of Asymmetric Rocking Bridges
Publisher: ASCE
Abstract: The governing equations of motion for bridges with rocking piers of unequal height and unequal span lengths are derived accounting for the effect of the end joint gaps and the abutment-backfill system. The attenuation of ...
Methodology for Sub-commercial Calculation of the Potential Energy Storage Capacity of Hydrogen, Natural Gas, and Compressed Air in Salt Caves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The incorporation of renewable energy into the future world energy matrix challenges its efficient use because renewable energy is not always available due to its dependence on natural factors such as wind and sunlight. ...
On the Relation between Gravity Waves and Wind Speed in the Lower Stratosphere over the Southern Ocean
Publisher: American Meteorological Society
Abstract: he relationship between gravity wave momentum fluxes and local wind speed is investigated for oceanic regions at high southern latitudes during austral spring. The motivation is to better describe the gravity wave field ...
Modification of the Gravity Wave Parameterization in the Whole Atmosphere Community Climate Model: Motivation and Results
Publisher: American Meteorological Society
Abstract: he current standard version of the Whole Atmosphere Community Climate Model (WACCM) simulates Southern Hemisphere winter and spring temperatures that are too cold compared with observations. This ?cold-pole bias? leads to ...
On the Gravity Wave Forcing during the Southern Stratospheric Final Warming in LMDZ
Publisher: American Meteorological Society
Abstract: he austral stratospheric final warming date is often predicted with substantial delay in several climate models. This systematic error is generally attributed to insufficient parameterized gravity wave (GW) drag in the ...
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